Backend Engineer

ABOUT THE ROLE This is a core infrastructure role at a pre-seed energy tech startup building the foundational systems that power dynamic electricity plans — including a modular billing engine, low-level energy-market communication protocols, and a full accounting ledger. You'll be a key contributor shaping scalable, reliable backend architecture at an early and critical stage of the company's growth. WHAT YOU'LL DO - Design systems that tame complexity and make hard problems tractable at scale. - Build and scale core backend services that underpin dynamic electricity plans and billing infrastructure. - Move fast with a bias for action, shipping meaningful work in an ambiguous, fast-moving environment. - Set and uphold a high technical bar across the codebase and team. WHAT WE'RE LOOKING FOR - 3–10+ years of backend engineering experience with strong proficiency in TypeScript (Node.js) and asynchronous programming. - Solid experience with PostgreSQL and an ORM (experience with Drizzle is a plus). - Familiarity with Next.js, including API routes or server components for backend services. - Understanding of distributed systems concepts and how to design scalable, maintainable services. - Hands-on experience integrating Stripe payments and billing flows. - Strong CS fundamentals — formal degree or equivalent practical experience. - Excellent written and verbal communication, a strong sense of ownership, and comfort operating in ambiguity. COMPENSATION & BENEFITS Salary range: €80,000 – €120,000 per year. Visa sponsorship is available. LOCATION On-site, 5 days per week in Berlin, Germany. Remote work is not available for this role.