Senior Software Engineer

• 2+ years of related expereince and/or BS in Computer Science
• Strong hands-on experience with Node.js and React
• Experience building production web applications, APIs, and backend services
• Experience with modern TypeScript development
• Experience with frontend tooling such as Vite, Jest, Webpack, or similar tools
• Experience working with PostgreSQL or other relational databasesExperience using Docker, Git, GitHub, and collaborative development workflows
• Familiarity with cloud-hosted applications, preferably on Google Cloud PlatformAbility to write clean, maintainable, well-tested codeStrong debugging, communication, and teamwork skills

Preferred Qualifications Experience with large-scale data or data-intensive applicationsExperience supporting applications deployed on Google Cloud PlatformFamiliarity with Go or PythonExperience with CI/CD workflows, GitHub Actions, or cloud deployment practicesAbility to work autonomously, communicate clearly with teammates, and help shape practical product and engineering improvements

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., 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.