Founding Product Engineer

About the Role

This is a founding engineering role at an early-stage B2B energy tech startup building an AI-powered platform that helps industrial companies optimise energy procurement and manage consumption in response to live market conditions. You'll join a small, ambitious team and have direct influence over product direction, technical architecture, and customer outcomes — from day one.

What You'll Do

• Own the full product lifecycle from design through deployment, working closely with founders and customers.

• Translate product objectives into concrete requirements through direct customer collaboration.

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

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

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

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

• Develop linear optimisation algorithms that reduce customer energy costs.

• Help shape the core tech stack and engineering culture of a fast-growing startup.

What We're Looking For

• 2+ years of software engineering experience delivering scalable web applications in a startup or high-intensity environment — this is a dealbreaker requirement.

• Proven track record of delivering full product features end-to-end, independently, in close collaboration with customers.

• Strong software engineering fundamentals: robust, maintainable, scalable web application development across backend and frontend.

• Experience building backend services for data-intensive applications and frontend UIs for complex decision-support systems.

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

• Familiarity with PostgreSQL, TypeScript, React, and Python; FastAPI or Supabase experience is a bonus.

• A genuine product mindset — you think about user impact, not just code quality.

• Background as a generalist engineer, startup founder, or early CTO is a strong plus.

• Curiosity about energy markets, complex data systems, and ambiguous, fast-moving problems.

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.