Founding Engineer

This is a founding-stage full-stack engineering role at an early-stage B2B SaaS cleantech startup building AI-powered software that controls and optimizes industrial and commercial battery storage assets. The platform addresses real-world energy challenges - including volatile electricity prices and underutilized battery capacity - through strategies like self-consumption optimization, peak shaving, spot market arbitrage, and dynamic tariff management.

As a Founding Engineer, you will have an outsized impact on both product and company direction. You’ll own core backend systems for real-time optimization and forecasting, build operator-facing dashboards, and architect the infrastructure needed to scale across thousands of battery systems., * Own and build the core product driving real-time optimization and forecasting for energy assets.

• Develop backend services and mixed-integer optimization algorithms to process data in real time.
• Create intuitive frontend dashboards for battery operators to monitor and control assets.
• Design and scale cloud infrastructure to support thousands of battery systems.
• Collaborate cross-functionally to define product features and requirements.
• Deploy production-ready optimizations and iterate rapidly based on real-world feedback.

Must-haves (dealbreakers):

• Frontend development skills with JavaScript/TypeScript and React (Next.js preferred).
• Proven experience in a full-stack engineering role building and shipping production applications.

Required:

• Experience with Tailwind CSS.
• Degree in Computer Science, Mathematics, or Electrical Engineering (Bachelor’s or Master’s) with a strong academic record (grade better than 2.0 on the German scale).
• Startup experience - defined as a company younger than 3 years and fewer than 50 employees.
• Experience with cloud infrastructure (AWS, GCP, or Azure).
• Solid Python backend development experience, including mixed-integer optimization.
• Fluency in German - required, as the majority of customers operate in German.

Nice to have:

• Background or experience in the energy industry.
• Experience deploying optimizations in production systems.

• Salary: $70,000 - $100,000 annually
• Visa sponsorship: Available
• Founding-stage equity and direct impact on company trajectory