FlexGen is seeking an Energy Storage Application Engineer to support the development and delivery of cutting-edge energy storage projects. In this role, you will partner with our Business Development and Technical Support teams to provide pre-sales engineering, system design guidance, and technical expertise for Energy Storage Systems and FlexGen’s Energy Management System (EMS), HybridOS. You will act as a trusted technical advisor in customer engagements—bridging hardware, software, and market applications—to ensure FlexGen delivers solutions that meet both technical and commercial needs. From project development and opportunity evaluation through contract execution, you will help drive adoption of FlexGen’s industry-leading EMS and BESS solutions. Key Responsibilities:Technical &amp; Project Support<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Support preliminary ESS design, system sizing, and power system analysis.</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Provide technical guidance on energy storage solutions during project development and pre-sales phases.</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Collaborate with system engineering and software engineering teams to ensure accurate technical solutions.</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Partner with the Sales and Business Development teams to position HybridOS™ EMS and ESS solutions for new opportunities.</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Partner with Business Operations team to prepare and deliver technical presentations and proposals highlighting EMS and BESS capabilities, system performance, and integration benefits.</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Serve as a subject matter expert in customer meetings, demonstrating the value of FlexGen’s EMS and BESS solutions</li></ul> Customer &amp; Market Engagement<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Serve as a technical point of contact for customers, supporting system design, interconnection requirements, and market-specific considerations</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Partner with the Business Development team to identify strategic opportunities and provide technical input for proposals</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Contribute to project estimations and cost modeling for ESS projects</li></ul>Commercial Support<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Assist in contract negotiations by ensuring technical requirements are accurately reflected in agreements</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Provide clear technical documentation and responses to customer inquiries during proposal and contracting stages</li></ul> Position Requirements:<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Associate degree in Engineering or equivalent relevant experience</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Strong technical aptitude in electrical or power systems engineering</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Excellent listening, communication, and customer engagement skills</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Ability to manage multiple priorities and remain professional under pressure</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">High proficiency in Microsoft Excel</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Valid driver’s license and willingness to travel</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Ability to pass background and toxicology screening</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Preferred Qualifications:</li><li style="font-size:11pt;list-style:none;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;"><ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Bachelor’s degree in Electrical, Mechanical, or Power Systems Engineering</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Professional certification or license (e.g., EIT, PE, PMP)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Experience with AutoCAD, PowerBI, Visual Basic, Microsoft PowerPoint</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Prior experience in energy storage, renewable energy, or utility-scale power projects</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Familiarity with grid interconnection requirements and utility/ISO processes</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;text-align:start;">Exposure to contract negotiation or technical sales engineering</li></ul></li></ul> FlexGen provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, FlexGen complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. FlexGen expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. To the extent permitted by law, employees are subject to periodic random drug testing, and post-accident and reasonable suspicion drug and alcohol testing.

FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach. We fundamentally turn battery energy storage systems on, deliver advanced functionality through the HybridOS&trade; energy management system platform, and integrate with the best energy storage hardware systems available. We are hardware agnostic and have flexible approaches to delivering systems that empower our customers to procure hardware or FlexGen to provide hardware as part of a complete system solution.&nbsp;

Energy Storage Application Engineer

FlexGen is seeking an Energy Storage Application Engineer to support the development and delivery of cutting-edge energy storage projects. In this role, you will partner with our Business Development and Technical Support teams to provide pre-sales engineering, system design guidance, and technical expertise for Energy Storage Systems and FlexGen’s Energy Management System (EMS), HybridOS. You will act as a trusted technical advisor in customer engagements—bridging hardware, software, and market applications—to ensure FlexGen delivers solutions that meet both technical and commercial needs. From project development and opportunity evaluation through contract execution, you will help drive adoption of FlexGen’s industry-leading EMS and BESS solutions. Key Responsibilities:Technical &amp; Project Support<ul><li>Support preliminary ESS design, system sizing, and power system analysis.</li><li>Provide technical guidance on energy storage solutions during project development and pre-sales phases.</li><li>Collaborate with system engineering and software engineering teams to ensure accurate technical solutions.</li><li>Partner with the Sales and Business Development teams to position HybridOS™ EMS and ESS solutions for new opportunities.</li><li>Partner with Business Operations team to prepare and deliver technical presentations and proposals highlighting EMS and BESS capabilities, system performance, and integration benefits.</li><li>Serve as a subject matter expert in customer meetings, demonstrating the value of FlexGen’s EMS and BESS solutions</li></ul> Customer &amp; Market Engagement<ul><li>Serve as a technical point of contact for customers, supporting system design, interconnection requirements, and market-specific considerations</li><li>Partner with the Business Development team to identify strategic opportunities and provide technical input for proposals</li><li>Contribute to project estimations and cost modeling for ESS projects</li></ul>Commercial Support<ul><li>Assist in contract negotiations by ensuring technical requirements are accurately reflected in agreements</li><li>Provide clear technical documentation and responses to customer inquiries during proposal and contracting stages</li></ul> Position Requirements:<ul><li>Associate degree in Engineering or equivalent relevant experience</li><li>Strong technical aptitude in electrical or power systems engineering</li><li>Excellent listening, communication, and customer engagement skills</li><li>Ability to manage multiple priorities and remain professional under pressure</li><li>High proficiency in Microsoft Excel</li><li>Valid driver’s license and willingness to travel</li><li>Ability to pass background and toxicology screening</li><li>Preferred Qualifications:</li><li><ul><li>Bachelor’s degree in Electrical, Mechanical, or Power Systems Engineering</li><li>Professional certification or license (e.g., EIT, PE, PMP)</li><li>Experience with AutoCAD, PowerBI, Visual Basic, Microsoft PowerPoint</li><li>Prior experience in energy storage, renewable energy, or utility-scale power projects</li><li>Familiarity with grid interconnection requirements and utility/ISO processes</li><li>Exposure to contract negotiation or technical sales engineering</li></ul></li></ul> FlexGen provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, FlexGen complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.&nbsp;FlexGen expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status.&nbsp;To the extent permitted by law, employees are subject to periodic random drug testing, and post-accident and reasonable suspicion drug and alcohol testing.&nbsp;

Energy Storage Application Engineer

About the Job

About the Company

FlexGen

Similar Jobs

Power Systems Engineer - PV Solar & Energy Storage

Power Systems Engineer - PV Solar & Energy Storage

Senior Electrical Engineer - Battery Energy Storage System

Senior Electrical Engineer - Battery Energy Storage System

Project Engineer

Project Engineer

Product & Applications Engineer

Product & Applications Engineer

Field Application Engineer

Field Application Engineer

Field Applications Engineer - Switzerland

Field Applications Engineer - Switzerland

Sales Engineer (Battery Energy Storage) UK

Sales Engineer (Battery Energy Storage) UK

Project Engineer (Utility Storage)

Project Engineer (Utility Storage)

Field Engineer - Power Infrastructure

Field Engineer - Power Infrastructure

Application Engineer - Battery Energy Storage System

Application Engineer - Battery Energy Storage System