Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.&nbsp;

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Focus: Mitigation or Adaptation

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Portable, zero-emissions nuclear microreactor for clean, reliable power everywhere.

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Operations AssociateRadiant’s goals are ambitious – we will be the first company to mass-produce portable nuclear reactors. We have world-class engineers designing Kaleidos, and we need a world-class team to build our business. The Operations Associate will tackle a wide variety of challenges, ranging from high level strategy to nitty gritty operational details, with no problem too big or too small. We are looking for someone who is comfortable with ambiguity, eager to make an impact, and excited to make our vision a reality.Responsibilities:<ul><li>Understanding the procurement needs of engineers.</li><li>Vendor identification and other sourcing activities.</li><li>Purchase order creation and management.</li><li>Receiving inventory and managing inspections of critical components.</li><li>General facilities support.</li></ul>Required Skills and Qualifications:<ul><li>Experience in a fast-paced, execution-oriented environment.</li><li>Bachelor’s degree from an accredited institution.</li><li>High technical aptitude. Able to break down complex topics simply and concisely.</li><li>Exemplary communication skills and experience working across organizational levels.</li><li>Strong analytical skills.</li><li>Experience with Microsoft Office (emphasis on Excel).</li></ul>Desired Skills and Qualifications:<ul><li>Proven track record managing company impacting initiatives. Emphasis on setting milestones and measuring results.</li><li>Comfort juggling multiple projects across many topics.</li><li>Experience in contract negotiations.</li><li>Experience in a manufacturing environmental.</li><li>Keen ability to identify requirements, prioritize, and execute at a high level.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Operations Associate

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Technical Recruiter  Radiant is seeking a highly driven, exceptional Technical Recruiter to own full cycle recruitment and scale a world class team in a startup environment. You will be responsible for the end-to-end process of recruitment – intake meetings, sourcing strategy and execution, interviews, negotiating offers, and closing. You will be a trusted strategic partner to hiring managers on closing strategies, talent trends, and best practices. You will also drive Radiant’s university recruitment program to attract top students. The ideal candidate thrives in fast-paced environments, are skilled in identifying and closing the top 5% of talent in their respective fields, and take extreme ownership over their work. The ideal candidate also has experience supporting a diverse set of skillsets and roles and are is comfortable recruiting both entry level and senior talent across technical and corporate functions. You will have a big impact on Radiant’s mission to build Earth's first mass-produced nuclear reactors for a cleaner future.  This role is located onsite in El Segundo, CA. Responsibilities and Duties:  <ul><li>Manage full cycle recruiting process providing a best-in-class candidate experience. </li><li>Act as trusted partner for hiring managers on hiring strategies, best interview practices, and closing talent.  </li><li>Develop and uphold consistent, structured hiring processes that assesses and attracts top talent. </li><li>Own and drive university recruiting and internship programs that make Radiant the employer brand of choice for students.  </li><li>Drive non-traditional recruitment methods, including organizing and executing networking events, identifying industry experts, etc.  </li><li>Identify and address process improvements in recruitment and talent function, leaning on data to inform decisions.  </li><li>Attend recruiting and networking events on behalf of Radiant.  </li></ul>Required Qualifications and Skills: <ul><li>Bachelor’s degree from accredited university OR 2+ years of professional experience as a technical recruiter.  </li><li>2+ years of full-cycle technical recruiting experience, preferably in-house.  </li></ul>Desired Qualifications and Skills:  <ul><li>Demonstrated success in sourcing passive niche talent skillsets.  </li><li>Demonstrated experience building diverse and inclusive teams. </li><li>Ability to work autonomously and proactively and developing a deep understanding of job functions outside your role.  </li><li>Comfortable with senior leadership and hiring manager communication.  </li><li>Demonstrated expertise in both traditional and non-traditional recruitment methods: cold calling, networking events, targeted sourcing campaigns, etc. </li><li>Adaptable and flexible to a fast-paced environment with shifting priorities. </li><li>Passionate about our mission and works with innate curiosity.  </li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Technical Recruiter

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Director of Software EngineeringRadiant is seeking an excellent technical and people leader to head our software engineering organization. The software team is the backbone of our Digital Twin infrastructure, enabling reliable, real-time, and performant simulations to validate performance and safety of our systems. You will be responsible for the roadmap, schedule, budget, and execution of software milestones towards our goal to be the first new nuclear reactor design successfully fueled in over 50 years by 2026. The ideal candidate has a successful track record of leading high performing teams and seeing an early product mature into a robust, comprehensive software solution. The ideal candidate has experience building fault-tolerant, highly reliable systems. You will continue to hire and grow the team as software requirements grow and manage DevOps as well.  This role is located onsite in El Segundo, CA. Nuclear experience is not required.Responsibilities and Duties:  <ul><li>Hire, lead, and grow a high performing, exceptional software team.</li><li>Drive software development schedule, budget, and strategy aligned to organizational goals.</li><li>Foster a collaborative culture with a big emphasis on growing responsible engineers who own their work end to end.</li><li>Work closely with cross-functional engineering teams and leaders to understand business requirements and translate them into reliable solutions.</li><li>Oversee the design and scale of the devops organization.</li></ul>Required Skills and Qualifications:<ul><li>Bachelors in computer science, computer engineering, or similar discipline.</li><li>5+ years of software development experience.</li><li>3+ years leading software teams.</li></ul>Desired Skills and Qualifications:<ul><li>Experience in developing software for a hardware product realized from concept to production.</li><li>1+ years leading and mentoring software managers.</li><li>Proven track record of leading high performing software teams and overseeing software operations, best practices, methodologies, and tools.</li><li>Experience in interdisciplinary technical environments solving complex, ambiguous problems.</li><li>Exceptional ability to pivot from diving deep into technical problems to big picture strategy development.</li><li>Experience with AWS.</li><li>Demonstrated interest in driving the forefront of nuclear energy.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Director of Software Engineering

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Senior Manufacturing Engineer  Radiant is seeking the first dedicated and highly motivated senior manufacturing engineer responsible for the end-to-end manufacturing process of critical subcomponents, assemblies,and systems for the Kaleidos microreactor. You will drive, define, and refine best manufacturing practices and processes that set the stage for mass-producing reactors. You will ensure reliable, safe, quality, and delivery of the Kaleidos demonstration unit that will test in 2026 at the Idaho National Lab and be instrumental to testing the first new reactor design in over 50 years. You will work closely with design engineers to innovate on the production of complex mechanisms and structures critical to our microreactor technology. This role is based on-site full-time in El Segundo, CA. Responsibilities and Duties: <ul><li>Responsible for the manufacturing and inspection process for critical components and assemblies within the Kaleidos microreactor. </li><li>Partner with design engineers to develop innovative production methods for complex mechanisms and structures. </li><li>Develop, qualify, and refine manufacturing processes to meet all design and business requirements including safety, quality, efficiency, and delivery. </li><li>Develop and execute manufacturing specifications and fabrication instructions. </li><li>Manage manufacturing bill-of-materials (mBOM) for components and assemblies. </li><li>Identify and develop appropriate suppliers for component sourcing and fabrication. </li><li>Identify, plan, and execute capital equipment, machine, and layout upgrades to meet evolving production requirements. </li><li>Drive initiatives for continuous improvement in manufacturing processes and product quality. </li></ul>Required Skills and Qualifications: <ul><li>Bachelor’s degree from an accredited institution in Mechanical Engineering or a related field. </li><li>5+ years of experience with manufacturing of mechanical products in a production environment, preferably in high-tech or energy sectors. </li></ul>Desired Skills and Qualifications: <ul><li>Experience with machining and ancillary operations such as milling, turning, grinding, EDM of materials. </li><li>Experience with interpreting engineering drawings and models, Geometric Dimensioning &amp; Tolerancing (GD&amp;T). </li><li>Experience with inspection systems including manual gauges and coordinate-measuring machine (CMM) </li><li>Experience with non-destructive testing/non-destructive evaluation (e.g. fluorescent penetrant inspection, radiography, eddy current, etc.) </li><li>Experience with custom machine design; electromechanical systems, motors, actuators, linear rails, bearings, lifting/rigging, etc. </li><li>Experience with design of multi-component assemblies in CAD (Solidworks or similar). </li><li>Strong problem-solving skills and attention to detail. </li><li>Self-motivated with strong organizational, written, and oral communication skills.  </li><li>Demonstrated ability to work collaboratively with design and operations teams. </li></ul> <div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Senior Manufacturing Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Senior Power Electronics EngineerRadiant is seeking a talented senior electrical power engineer to own designs from requirements capture through operation. The candidate will own the architecture of a nuclear microreactor power system capable of outputting 1 MW of electrical power to a grid or microgrid. The ideal candidate should be comfortable jumping from designing high power circuit boards and alternators to testing microgrid power equipment. This role requires collaboration with multi-disciplinary teams for proper operation of a nuclear reactor, fluids system, and structures. No nuclear engineering experience is required.This role is full-time onsite in El Segundo, CA. Responsibilities and Duties:<ul><li>Work with multi-disciplinary team to support the architectural design, implementation, and testing of a 1 MW nuclear microreactor electrical control system.</li><li>Responsible Engineer with total ownership over the Kaleidos power system including requirements definition and project management.</li><li>Develop and test high speed alternator, rectifiers, and inverters for 1MW delivery to microgrid through direct design engineering and vendor management to minimize schedule.</li><li>Develop and test DC high power battery to provide black start capability, all power internal to Kaleidos, energy storage to the grid, and stability to the electrical power conversion equipment.</li><li>Create system electrical models for integration into reactor digital twin and microgrid simulations and validate through component and system testing.</li></ul>Required Qualifications and Skills: <ul><li>6+ years experience designing compact electrical hardware for megawatt power conversion, including alternators, active rectifiers, DC/DC converters, and inverters.</li><li>Design and test experience with 480V AC three-phase microgrids, circuit breakers, load banks, power factor measurement.</li><li>Regulatory familiarity and design experience with islanding, grid-tie, grid-forming.</li><li>Experience working a combined design approach with in-house and vendor to sourcing complex electrical power hardware.</li><li>Experience with cooling system integrated design, liquid cooled architectures.</li><li>Bachelor’s or higher degree in electrical engineering or related field.</li><li>Experience trading electrical architectures and make vs. buy trades.</li></ul>Desired Qualifications &amp; Skills:<ul><li>8+ years experience with utility scale power systems: transformers, breakers, switchgear, wire and cable systems at 12kV+, and connectorized systems at 1kV.</li><li>Experience designing fault-tolerant and safety critical hardware.</li><li>Experience building teams, interest in mentoring younger engineers.</li><li>Experience using Ethernet, CANbus, RS-422, or other communications protocols.</li><li>Proficiency with electrical cabinet or circuit board design software tools.</li><li>Familiarity with radiation effects on electronics.</li><li>Experience implementing microcontrollers and/or FPGAs.</li><li>Basic familiarity with Python and C/C++. </li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Senior Power Electronics Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Electrical Engineer - New GraduatesRadiant is seeking a highly motivated early career electrical engineers to develop new hardware with an experienced engineering team in a fast-paced startup environment! The electrical team solves technical challenges in batteries, power systems, instrumentation and controls, test development, and electrical system integration. You'll get exposure to interdisciplinary teams across software, nuclear and mechanical and deepening understanding of integrated systems. You'll have the opportunity to make an impact in Radiant's goal to be the first successfully fueled commercial reactor in over 50 years by 2026.  Responsibilities &amp; Duties <ul><li>Electrical Engineering ownership of components and subsystems, such as the following:<ul><li>Analog and mixed signal design and development.</li><li>Schematic capture and PCB design.</li><li>Instrumentation and controls.</li><li>Power electronics.</li><li>Wire harnessing/electrical distribution.</li></ul></li><li>Design and own test plans including hands on work.</li><li>Perform trade studies, collect requirements and provide feedback to engineers in other functional areas. </li><li>Create and manage a Bill-Of-Materials (BOM).<ul><li>Find and develop suppliers for all components.</li><li>Own subassembly design, manufacturing, and test schedules.</li></ul></li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.</li></ul> Required Qualifications &amp; Skills <ul><li>Bachelor’s degree in electrical engineering or similar field from an accredited institution. </li><li>Experience in electrical design and development from classes, club projects, senior projects, etc.  </li></ul>Desired Qualifications &amp; Skills <ul><li>Solid understanding and application of electrical systems design.  </li><li>Enjoy solving problems and continually work with a growth mindset. </li><li>Self-motivated with strong organizational, written, and oral communication skills. </li><li>Solid first-principles analysis skillset:<ul><li>Proficiency with both "hand calc" analytical methods.  </li></ul></li><li>Proficiency in Python, C or C++.</li><li>Excellent ability to collaborate and communicate with peers, leaders and teams across skillsets. </li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Electrical Engineer - New Graduates

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Summer 2025 Internship - EngineeringRadiant is looking for bright and eager students to join our Summer 2025 internship program. We are hiring across various groups in nuclear, thermomechanical, electrical and software engineering. Our interns take on real world project ownership and get exposure to interdisciplinary teams working on interesting and hard problems. Successful interns come in with a growth mindset, aren't afraid to be proactive and take tasks on, and enjoy collaborating with others. You'll receive mentorship from a world class team of engineers and gain deeper technical expertise.Here are example responsibilities:Nuclear: <ul><li>Develop and analyze nuclear technology spanning from shielding, neutronics , thermal modeling, fuel and more.</li></ul>Thermomechanical: <ul><li>Perform design, development and thermal analysis of mechanical components and subsystems such as shielding, heat exchangers, fluid systems components, tooling and more.</li></ul>Materials:<ul><li>Develop and produce metal hydrides for nuclear moderator applications.</li><li>Write code for in-house materials database to support analysis pipelines.</li></ul>Electrical: <ul><li>Develop electrical subsystems and hardware with an eye for safety critical and fault tolerant applications.</li><li>Support test stand development for system level testing.</li></ul>Software: <ul><li>Develop front and backend systems for digital twin software used to simulate the Kaleidos reactors, sub-systems, test stands and more.</li><li>Technologies: Python, C#, C++, JavaScript, TypeScript, React, Kubernetes, AWS</li></ul>Required Skills and Qualifications: <ul><li>Currently pursuing a Bachelor's, Master's or PhD in Mechanical, Materials, Nuclear, Electrical, Software Engineering or similar discipline.</li><li>Proficient engineering fundamentals in your areas of studies.</li><li>Able to commit to 12 weeks onsite in El Segundo, CA.</li></ul>Desired Skills and Qualifications: <ul><li>Hands on project examples outside of the classroom such as extracurricular projects, clubs, research, lab work or personal projects.</li><li>Prior internship experience helpful but not required.</li><li>Ability to work in a fast-paced startup environment with a proactive and collaborative attitude.</li><li>Excited to take on new challenges and continue to learn and grow.</li><li>Willing to be hands on in our R&amp;D shop building test stands.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Summer 2025 Internship - Engineering

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Nuclear Engineer - New GraduatesRadiant is seeking a highly motivated early career nuclear engineer to design and analyze nuclear systems for a 1MW HTGR nuclear microreactor. You will have the opportunity for mentorship from experienced engineers in a fast-paced startup environment while taking great ownership of projects end-to-end. You will be responsible for various aspects of the nuclear design and analysis as priorities shift and expertise is gained.  Build your nuclear career at Radiant and be a key contributor to testing the first new reactor design in over 50 years by 2026. Responsibilities &amp; Duties  <ul><li>Ownership of Nuclear design and analysis, examples: <ul><li>Shielding: Transport, Operational, Self-Activation and environmental Activation, Waste Categorization, working with both customer and regulatory requirements </li><li>Run coupled neutronics and thermal calculations to refine the thermal model in various scenarios </li><li>Mechanical: Assess damage effects and bulk material properties changes due to high flux on ceramics and metals inside the core </li><li>Neutronics: Develop control schemes and design control systems using transient simulations to finalize source sizing and detector selection </li><li>Fuel and Waste: Model burnup distribution, design burnable absorber, and perform criticality assessments for transport and waste facility compatibility </li></ul></li><li>Develop requirements for hardware systems, structures, and components <ul><li>Create and manage a Bill-Of-Materials (BOM). </li><li>Find and develop suppliers for all components. </li></ul></li><li>Own subassembly design, manufacturing, and test schedules.   </li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.   </li></ul>Required Qualifications &amp; Skills <ul><li>Bachelor’s degree in nuclear engineering or equivalent degree from accredited institution </li><li>Proficient in at least one of the following programming languages: Python, C++, C#, or another scientific computing language </li></ul>Desired Qualifications &amp; Skills  <ul><li>Self-motivated with strong organizational, written, and oral communication skills  </li><li>Competency in distributed software development process </li><li>Hands-on experience designing hardware and/or performing tests </li><li>Related experience with OpenMC, Serpent, MCNP, MOOSE, BISON, RELAP, CFD, Pronghorn, GRIFFIN, or other nuclear software packages   </li><li>At least 1 year of software development experience:<ul><li>C, C++, or Python development experience is preferred.</li><li>Prior use of code repositories, unit testing, performance benchmarking, and software review / release processes.  </li><li>Familiarity with good documentation practices and implementation of style guidelines.</li></ul></li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Nuclear Engineer - New Graduates

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Mechanical Engineer - New GraduatesRadiant is seeking a highly motivated early career mechanical engineers to develop new hardware with an experienced engineering team in a fast-paced startup environment! You'll have the opportunity to design and analyze a wide variety of components in support of developing Kaleidos. You'll get exposure to interdisciplinary teams across software, nuclear and electrical and deepening understanding of integrated systems. You'll have the opportunity to make an impact in Radiant's goal to be the first successfully fueled commercial reactor in over 50 years by 2026.  Responsibilities &amp; Duties <ul><li>Mechanical Engineering ownership of components and subsystems, such as the following:<ul><li>Reactor core pressure vessel design per Boiler &amp; Pressure Vessel Code (BPVC).</li><li>Reactor internal components and mechanisms.</li><li>Radiation shielding and thermal insulation.</li><li>Heat exchangers and other fluid system components.</li><li>Transportation and assembly tooling.</li></ul></li><li>Perform detailed thermal and mechanical analysis (static strength, durability/fatigue) to determine structural integrity (margins of safety) using both hand calculations and finite element tools.</li><li>Perform trade studies to optimize structure and meet program requirements.</li><li>Develop and execute manufacturing/assembly instructions and test plans.</li><li>Create and manage a Bill-Of-Materials (BOM).<ul><li>Find and develop suppliers for all components</li><li>Own subassembly design, manufacturing, and test schedules</li></ul></li><li>Own risk analysis (FMEA) for subsystems.</li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.</li></ul> Required Qualifications &amp; Skills <ul><li>Bachelor’s degree in mechanical engineering or similar field from an accredited institution. </li><li>Experience with CAD and FEA software packages. </li></ul>Desired Qualifications &amp; Skills <ul><li>Solid understanding and application of geometric dimensioning and tolerancing (GD&amp;T). </li><li>Experience designing hardware that was manufactured, deployed and iteratively improved on, including research work or club activities. </li><li>Enjoy solving problems and continually work with a growth mindset. </li><li>Self-motivated with strong organizational, written, and oral communication skills. </li><li>Solid first-principles analysis skillset:<ul><li>Proficiency with both "hand calc" analytical methods and higher fidelity Finite Element based analysis methods. </li></ul></li><li>Proficiency in Python, C or C++.</li><li>Excellent ability to collaborate and communicate with peers, leaders and teams across skillsets. </li></ul> <div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Mechanical Engineer - New Graduates

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Senior Mechanical EngineerRadiant is seeking a highly motivated Senior Mechanical Engineer to design and develop new hardware systems for the Kaleidos 1MW nuclear microreactor. The ideal candidate takes great ownership of their work end-to-end, is proficient in both design and analysis, and is excited to work in a highly cross-functional, fast-paced environment. You will be a key contributor to building the world's first mass-produced, rapidly-deployable nuclear reactor. Responsibilities &amp; Duties <ul><li>Mechanical Engineering ownership of components and subsystems, such as the following:  </li><ul><li>Reactor core pressure vessel design per Boiler &amp; Pressure Vessel Code (BPVC).</li><li>Reactor internal components and mechanisms.</li><li>Radiation shielding and thermal insulation.</li><li>Heat exchangers and other fluid system components.</li><li>Transportation and assembly tooling.</li></ul><li>Conduct trade studies and develop designs to meet program requirements. </li><li>Perform detailed thermal and mechanical analysis (static strength, durability/fatigue) to determine structural integrity (margins of safety) using both hand calculations and finite element tools. </li><li>Develop and execute manufacturing/assembly instructions and test plans. </li><ul><li>Create and manage a Bill-Of-Materials (BOM).  </li><li>Find and develop suppliers for all components.</li></ul><li>Own subassembly design, manufacturing, and test schedules.</li><li>Own risk analysis (FMEA) for subsystems.</li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication. </li></ul>Required Qualifications &amp; Skills <ul><li>Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering. </li><li>5+ years of experience conducting trade studies and designing mechanical components or subsystems.</li><li>5+ years of experience performing stress analysis (static and fatigue) using both hand calculations and finite element analysis (FEA) tools (Femap/NASTRAN, Abaqus, or similar).</li></ul>Desired Qualifications &amp; Skills <ul><li>5+ years of experience with design of multi-component assemblies in CAD (Solidworks or similar).</li><li>5+ years of professional experience designing hardware that was manufactured, deployed, and iteratively improved. </li><li>Solid understanding and application of GD&amp;T.</li><li>Track record of appropriate selection of analysis fidelity.</li><li>Ability to derive free-body diagram and control volume-based models for systems.</li><li>Experience performing CFD analysis (STAR-CCM+ or similar) for combined fluid/thermal modeling of systems.</li><li>Experience performing fracture analysis using NASGRO / NASFLA. </li><li>Experience performing combined structural and thermal analysis of graphite and ceramic structural components. </li><li>Self-motivated with strong organizational, written, and oral communication skills. </li><li>Experience with using text-based software development tools (Python or similar).</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Senior Mechanical Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Mechanical Engineer IIRadiant is seeking a highly motivated Mechanical Engineer II to design and develop new hardware systems for the Kaleidos 1MW nuclear microreactor. The ideal candidate takes great ownership of their work end-to-end, is proficient in both design and analysis, and is excited to work in a highly cross-functional, fast-paced environment. You will be a key contributor to building the world's first mass-produced, rapidly-deployable nuclear reactor. Responsibilities &amp; Duties  <ul><li>Mechanical Engineering ownership of components and subsystems, such as the following:    <ul><li>Reactor core pressure vessel design per Boiler &amp; Pressure Vessel Code (BPVC).</li><li>Reactor internal components and mechanisms. </li><li>Radiation shielding and thermal insulation. </li><li>Heat exchangers and other fluid system components. </li><li>Transportation and assembly tooling. </li></ul></li><li>Conduct trade studies and develop designs to meet program requirements.</li><li>Perform detailed thermal and mechanical analysis (static strength, durability/fatigue) to determine structural integrity (margins of safety) using both hand calculations and finite element tools.</li><li>Develop and execute manufacturing/assembly instructions and test plans.<ul><li>Create and manage a Bill-Of-Materials (BOM).   </li><li>Find and develop suppliers for all components.</li></ul></li><li>Own subassembly design, manufacturing, and test schedules. </li><li>Own risk analysis (FMEA) for subsystems. </li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.  </li></ul>Required Qualifications &amp; Skills  <ul><li>Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering.  </li><li>2+ years of experience conducting trade studies and designing mechanical components or subsystems. </li><li>2+ years of experience performing stress analysis (static and fatigue) using both hand calculations and finite element analysis (FEA) tools (Femap/NASTRAN, Abaqus, or similar).  </li></ul>Desired Qualifications &amp; Skills  <ul><li>2+ years of experience with design of multi-component assemblies in CAD (Solidworks or similar). </li><li>2+ years of professional experience designing hardware that was manufactured, deployed, and iteratively improved.  </li><li>Solid understanding and application of GD&amp;T. </li><li>Track record of appropriate selection of analysis fidelity. </li><li>Ability to derive free-body diagram and control volume-based models for systems.</li><li>Experience performing CFD analysis (STAR-CCM+ or similar) for combined fluid/thermal modeling of systems.  </li><li>Self-motivated with strong organizational, written, and oral communication skills.  </li><li>Experience with using text-based software development tools (Python or similar).</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Mechanical Engineer II

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>FPGA EngineerRadiant is seeking a driven FPGA Engineer to join our Nuclear Robotics team. You will be responsible for designing, developing, and validating FPGAs used in the reactor instrumentation and control system for safety critical applications, sensor and actuator control, and communication systems.  This role requires working with hardware engineers, embedded software engineers, systems engineers, and control engineers in a cross-functional setting to develop cohesive designs that meet the demands of controlling and monitoring fission reactors. You will be a key contributor in testing the first commercial reactor design in over 50 years by 2026.   This role is based onsite full-time in El Segundo, CA. Responsibilities and Duties:<ul><li>Own the design of sensor processing systems from concept to integration.</li><li>Implement logic designs in VHDL.</li><li>Integrate designs onto FPGA/SoC platforms.</li><li>Write automated verification tests.</li><li>Work directly with embedded software engineers to deliver complete products.</li></ul>Required Skills and Qualifications:<ul><li>Bachelor’s degree in computer engineering, electrical engineering, or related STEM field.</li><li>5+ years of experience working with FPGAs.</li><li>Knowledge of VHDL.</li><li>Experience troubleshooting timing closure issues.</li><li>Experience with multi-clock designs.</li><li>Understanding of verification methodologies and frameworks.</li></ul>Desired Skills and Qualifications:<ul><li>Experience with embedded C/C++.</li><li>Experience with Linux and bash shell scripting.</li><li>Experience with Docker.</li><li>Excellent documentation skills and ability to collaborate in multidisciplinary environments.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

FPGA Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Reliability EngineerRadiant is seeking a driven, organized Reliability Engineer to manage the integration of hardware systems with customer requirements and regulation. This role is critical to bringing the world’s first portable nuclear microreactor to commercialization in a timely manner. You will work directly with all engineering disciplines to influence the full hardware lifecycle by providing critical feedback in design reviews, build reviews, and test campaigns. This is an exciting opportunity for reliability engineers who enjoy both technical work and operational execution. You will have a direct impact on bringing the safest microreactor to market the fastest.Responsibilities: <ul><li>Establish and implement practices across the company to ensure that hardware is designed, built, and operated with the highest level of engineering rigor.</li><li>Perform independent assessments of subsystem and system designs to develop understanding of vulnerabilities and associated risk.</li><li>Drive architectural decision making across engineering functions to improve reliability of both the design and build of hardware.</li><li>Develop processes and tools to assess manufacturing issues, manage technical risk, and evaluate changes to reactor configuration.</li><li>Oversee execution by technical teams including design reviews and regulatory and quality documentation; organize data inputs into technical papers and deliverable reports.</li></ul>Required Skills and Qualifications:  <ul><li>Bachelor’s degree in engineering discipline.</li><li>2+ years of full-time experience with engineering problem solving in design, analysis, or test of systems.</li><li>Experience with complex hardware and processes related to manufacturing, integration, testing or operations.</li><li>Applied understanding of requirement derivation, negotiation and verification or experience with the product design process especially as it relates to defining systems, interfaces and specifications.</li></ul>Desired Skills and Qualifications:  <ul><li>Experience with Mission Assurance, Quality Assurance, Reliability Analysis, or Systems Engineering.</li><li>Full product life cycle experience with hardware that has seen production. </li><li>Ability to apply fundamental engineering principles. </li><li>Interpersonal skills to interact with both internal and external groups to overcome associated constraints.</li><li>Analytical and problem-solving skills with proven ability to rapidly resolve interdisciplinary issues.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Reliability Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Senior Harness Design EngineerRadiant is seeking a highly driven Senior Harness Design Engineer to own the harness architecture end-to-end including design, development, testing and production of harnesses. As part of the Nuclear Robotics team, you will take great ownership and be comfortable working both autonomously and cross-functionally. You will build and present design reviews, iterate on designs, be hands on in our production facility building harnesses, and overall collaborate closely with the thermomechanical and nuclear robotics teams. This is an exciting opportunity within a small team to get exposure to electrical systems architecture from early-stage development through production. You will be a key contributor in testing the first commercial reactor design in over 50 years by 2026.   Responsibilities and Duties:   <ul><li>Own responsibility of the design, development, fabrication, installation, and testing of electrical harnesses for a nuclear microreactor.  </li><li>Develop electrical harness architecture, interfaces, and schematics for the nuclear microreactor system.  </li><li>Own the logical and topological design of the electrical harness architecture.  </li><li>Gather technical requirements and specifications to select harness materials including, conductors, connectors, terminals, overwraps, and tie downs.  </li><li>Own the electrical device library system and keep it up to date with quality standards.  </li><li>Perform root cause analysis and troubleshooting as issues arise as well as conduct trade studies to optimize designs.  </li><li>Be the subject matter expert of electrical distribution systems within the Nuclear Robotics team. </li></ul>Required Skills and Qualifications: <ul><li>Bachelor's degree in Electrical Engineering or similar field; OR 6+ years electrical design experience.  </li><li>4+ years of experience in harness design and development. </li><li>Experience with Mentor Capital, Zuken E3, SolidWorks electrical, or similar harness design software.  </li><li>Low voltage power distribution experience.  </li></ul>Desired Skills and Qualifications: <ul><li>Experience in electronics design, systems engineering, or distributed controls systems.  </li><li>Experience with large scale harness development for automotive, aerospace, marine, or nuclear systems. </li><li>Experience with High Voltage Systems  </li><li>Excellent written and verbal communication skills.  </li><li>Experience in electrical architecture make vs. buy trades.  </li><li>Experience designing fault-tolerant and safety critical hardware.  </li><li>Very comfortable in fast-paced environments with ability to multi-task effectively. </li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Senior Harness Design Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Senior Fluids Systems Engineer Radiant is seeking a highly motivated Senior Fluids Engineer to own critical Kaleidos fluid systems from preliminary design through build and production. These systems include the primary loop subsystems and power conversion loop, serving to convert heat from the reactor core into electrical power. You will be responsible for the following: trade studies, component selection, thermal hydraulic analysis, piping design, vendor selection, assembly, and testing. You will have an instrumental impact of fueling the first new commercial reactor design in over 50 years by 2026.  Responsibilities &amp; Duties <ul><li>Own end to end engineering of fluid systems and components, including compressors, valves, and heat exchangers. </li><li>Perform complex thermal and fluids analysis to drive design decisions, verify system performance, and ensure structural integrity using first-principle hand calculations and finite element tools. </li><li>Perform trade studies to optimize system and meet program requirements.  </li><li>Develop and execute manufacturing/assembly instructions and test plans.   <ul><li>Create and manage a Bill-Of-Materials (BOM).   </li><li>Find and develop suppliers for all components  </li></ul></li><li>Own subassembly design, manufacturing, and test schedules. </li><li>Own risk analysis (FMEA) for subsystems. </li><li>Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.  </li></ul>Required Qualifications &amp; Skills  <ul><li>Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering.  </li><li>Experience with fluid system architecture design. </li><li>5+ years of experience in designing, building, and testing fluids systems.  </li><li>Proficient knowledge in fluid dynamics and thermodynamics. </li><li>Proficient knowledge of process piping design and testing codes, such as ASME B31.3 and ASME PCC-2. </li></ul>Desired Qualifications &amp; Skills  <ul><li>Knowledge of thermodynamic power cycles. </li><li>Prior experience with designing piping system for thermal growth using hand calculations and FEA tools. </li><li>Prior experience with fluid system modeling via Matlab/Python.  </li><li>Experienced in design for manufacturability and ramping up hardware build in a production environment. </li><li>Proficient knowledge of heat exchanger design and analysis methods. </li><li>Experienced in designing and operating test stands.  </li><li>Takes extreme ownership of work and a high degree of responsibility.  </li><li>Excellent communication across multidisciplinary teams.  </li><li>Prior nuclear experience in not required for this role.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

Senior Fluids Systems Engineer

<div>Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now. </div>Lead Nuclear Engineer Radiant seeks a technical and people-oriented leader for our nuclear design and analysis group focused on thermal-fluidics, instrumentation and controls, shielding, and reactor operations. You will lead a high-performing team through the design, development, and test stages of the Kaleidos microreactor. You will own the schedule, budget, hiring, and execution of nuclear-related milestones with a key focus on safety, reliability, portability, and performance. The ideal candidate is comfortable in interdisciplinary environments working cross-functionally with engineers and leadership, has tenacious creative problem-solving abilities and keen to get to the solution of a problem, and loves to mentor and motivate engineers to deliver their best work. You will play a critical role at Radiant in driving the first portable nuclear microreactor to market.Responsibilities and Duties: <ul><li>Manage an interdisciplinary team of nuclear engineers focused on safety analyses, radiation, thermal-fluidics, I&amp;C, shielding, operations and more.</li><li>Hire, lead, and grow a high performing team of nuclear engineers.</li><li>Own nuclear engineering projects end to end including design, requirements, development, testing, and build phases.</li><li>Provide subject matter expertise and guidance on the design and analysis of the Kaleidos reactor.</li><li>Collaborate with regulatory team on nuclear industry standards and requirements.</li><li>Mentor junior engineers through actionable feedback and coaching.</li></ul>Required Qualifications and Skills:<ul><li>Bachelor’s degree in nuclear engineering or equivalent degree from accredited institution.</li><li>5+ years nuclear engineering industry experience.</li><li>1+ year managing direct reports.</li></ul>Desired Qualifications and Skills: <ul><li>Master’s or PhD in nuclear engineering or equivalent degree from accredited institution.</li><li>Subject matter expert in one of following areas: safety analysis, shielding, instrumentation and controls, reactor operations, and/or radioactive material transportation.</li><li>Hands-on experience designing hardware and/or performing tests.</li><li>High-level understanding of government regulatory requirements and engineering practices required to build a safe, reliable reactor.</li><li>Self-starter and autonomous in planning, scheduling, and leading teams to execute on milestones on time.</li><li>Experienced leading teams in fast-paced environments, complex technical environment.</li><li>Expert communicator up and down the chain and effectively acts as a technical advisor.</li><li>Ability to make sound judgement calls based on company priorities and resources.</li><li>Tenacious in finding creative solutions to complex problems.</li></ul><div>Employee Benefits for Eligible Employees:<ul><li>Stock: Substantial incentive stock plan for all full time, salaried employees.</li><li>Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.</li><li>One Medical: Sponsored memberships for employees and their dependents. </li><li>Vision: 100% top tier plan coverage + 50% for dependents.</li><li>Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.</li><li>Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.</li><li>Free snacks and drinks onsite. </li><li>Flexible PTO policy.</li></ul>We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. </div>

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