Senior Software Engineer

• Develop cloud applications for clean energy systems, working across backend services, frontend user experiences, APIs, data workflows, and internal tools.
• Build and maintain production web applications using Node.js and React.
• Support engineers and operators working with large-scale battery systems in powering green energy infrastructure.

This role directly contributes to the global energy transition by developing software that maximizes the value of renewables through grid-scale battery systems, helping to build a cleaner, more resilient grid.

• 2+ years of related experience and/or BS in Computer Science.
• Strong hands-on experience with Node.js and React.
• Experience building production web applications, APIs, and backend services with modern TypeScript.
• Experience with PostgreSQL, Docker, Git, GitHub, and cloud-hosted applications (preferably Google Cloud Platform).

Compensation and benefits not specified in the posting. Wärtsilä values diversity, inclusion, and equal employment opportunities.

Wärtsilä Energy Storage is a global leader in grid-scale battery systems and digital energy platforms, with over 17 GWh deployed across 130+ projects, powering the shift to a cleaner, more resilient grid.