<div><div>Wärtsilä Energy Storage is powering the shift to a cleaner, more resilient grid. We work at the front lines of the energy transition, helping partners around the world maximize the value of renewables through grid-scale battery systems, advanced software, and expert services. Our portfolio includes the industry-leading GEMS Digital Energy Platform, utility-scale battery solutions, and lifecycle services that keep storage assets optimized and ready when it matters most. With over 17 GWh of storage deployed or under contract across 130+ projects globally, we’re shaping how the grid of the future works. In a world of rising complexity and accelerating change, we’re looking for future-focused talent to help us design, deliver, and support the energy systems of tomorrow.Sound like your kind of challenge? Let’s build it together. </div></div> Join us in building part of the green energy future. We are looking for a full stack Node.js and React engineer to develop cloud applications for clean energy systems in a competitive, big-data ecosystem. This role will work across backend services, frontend user experiences, APIs, data workflows, and internal tools that support engineers and operators working with large scale battery systems in powering green energy infrastructure. Required Qualifications<ul><li>2+ years of related expereince and/or BS in Computer Science</li><li>Strong hands-on experience with Node.js and React</li><li>Experience building production web applications, APIs, and backend services</li><li>Experience with modern TypeScript development</li><li>Experience with frontend tooling such as Vite, Jest, Webpack, or similar tools</li><li>Experience working with PostgreSQL or other relational databasesExperience using Docker, Git, GitHub, and collaborative development workflows</li><li>Familiarity with cloud-hosted applications, preferably on Google Cloud PlatformAbility to write clean, maintainable, well-tested codeStrong debugging, communication, and teamwork skills</li></ul> Preferred Qualifications<ul><li>Experience with large-scale data or data-intensive applications</li><li>Experience supporting applications deployed on Google Cloud Platform</li><li>Familiarity with Go or Python</li><li>Experience with CI/CD workflows, GitHub Actions, or cloud deployment practices</li><li>Ability to work autonomously, communicate clearly with teammates, and help shape practical product and engineering improvements</li></ul>Last application date: 30/06/2026  At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.  Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.   This is Wärtsilä   Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on <a href="http://www.wartsila.com/">www.wartsila.com</a>.  #WärtsiläEnergyStorage

We enable sustainable societies through innovation in technology and services together with all our stakeholders &ndash; today and tomorrow. We emphasise innovation in sustainable technology and services to help our customers continuously improve environmental and economic performance. We work together with our strong ecosystem of partners every day, providing a wide portfolio of leading technologies and innovative solutions that offer our customers superior uptime, reliability and foreseeable lifecycle costs across their operations. Our global passionate team of 17,500 energy and maritime experts in 200 locations in more than 70 countries is committed to shaping decarbonisation transformation of our industries across the globe.

Software Engineer

<div><div>Wärtsilä Energy Storage is powering the shift to a cleaner, more resilient grid. We work at the front lines of the energy transition, helping partners around the world maximize the value of renewables through grid-scale battery systems, advanced software, and expert services. Our portfolio includes the industry-leading GEMS Digital Energy Platform, utility-scale battery solutions, and lifecycle services that keep storage assets optimized and ready when it matters most. With over 17 GWh of storage deployed or under contract across 130+ projects globally, we’re shaping how the grid of the future works. In a world of rising complexity and accelerating change, we’re looking for future-focused talent to help us design, deliver, and support the energy systems of tomorrow.Sound like your kind of challenge? Let’s build it together. </div></div> Join us in building part of the green energy future. We are looking for a full stack Node.js and React engineer to develop cloud applications for clean energy systems in a competitive, big-data ecosystem. This role will work across backend services, frontend user experiences, APIs, data workflows, and internal tools that support engineers and operators working with large scale battery systems in powering green energy infrastructure. Required Qualifications<ul><li>2+ years of related expereince and/or BS in Computer Science</li><li>Strong hands-on experience with Node.js and React</li><li>Experience building production web applications, APIs, and backend services</li><li>Experience with modern TypeScript development</li><li>Experience with frontend tooling such as Vite, Jest, Webpack, or similar tools</li><li>Experience working with PostgreSQL or other relational databasesExperience using Docker, Git, GitHub, and collaborative development workflows</li><li>Familiarity with cloud-hosted applications, preferably on Google Cloud PlatformAbility to write clean, maintainable, well-tested codeStrong debugging, communication, and teamwork skills</li></ul> Preferred Qualifications<ul><li>Experience with large-scale data or data-intensive applications</li><li>Experience supporting applications deployed on Google Cloud Platform</li><li>Familiarity with Go or Python</li><li>Experience with CI/CD workflows, GitHub Actions, or cloud deployment practices</li><li>Ability to work autonomously, communicate clearly with teammates, and help shape practical product and engineering improvements</li></ul>Last application date: 30/06/2026  At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.  Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.   This is Wärtsilä   Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on <a href="http://www.wartsila.com/">www.wartsila.com</a>.  #WärtsiläEnergyStorage

Software Engineer

About the Job

About the Company

Wartsila

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