Founding Product Engineer

About the Role

This is a founding-team engineering role at an early-stage B2B energy-tech startup building an AI-powered platform that helps industrial companies optimise their energy procurement and consumption. You'll have end-to-end ownership of the product — from architecture and backend services to customer-facing UI — and a direct hand in shaping the company's technical direction from the ground up.

What You'll Do

• Own the full product lifecycle from design through deployment.

• Translate product objectives into concrete requirements in close collaboration with customers.

• Design simple, iterative solutions to complex energy procurement and data problems.

• Build performant backend services for a data-intensive, real-time application.

• Develop intuitive, elegant user interfaces for complex decision-support workflows.

• Train time-series forecasting models for power consumption and renewables production.

• Develop linear optimisation algorithms aimed at reducing customer energy costs.

• Help choose and evolve the core tech stack (PostgreSQL, TypeScript, React, Python).

What We're Looking For

• 2+ years of software engineering experience delivering scalable web applications in an early-stage or high-intensity startup environment.

• Proven ability to own and ship full product features independently, working directly with customers.

• Strong fundamentals in building robust, maintainable, and scalable web applications across backend and frontend domains.

• Experience with data-intensive backend services; familiarity with PostgreSQL, Python, TypeScript, and React is a strong plus.

• Hands-on experience or genuine interest in time-series forecasting and/or linear optimisation.

• Experience with FastAPI and/or Supabase is welcome but not required.

• Generalist product-minded engineer; a background as a startup CTO or founder is a meaningful plus.

• Comfortable with ambiguity, rapid iteration, and direct customer collaboration.

• Curiosity for energy markets and complex, data-driven business applications.

• Willingness to work on-site in Munich the majority of the week.

Compensation & Benefits

• Salary: €85,000 – €140,000 per year

• Visa sponsorship: Not available

Location

Hybrid — primarily on-site in Munich, Bavaria, Germany , with flexibility for occasional remote work.