Backend Engineer

About the Role Join a pre-seed energy tech startup building the operating system for the next generation of European household energy. The core product includes a modular billing engine, low-level energy-market communication protocols, and a full accounting ledger — enabling hardware companies to launch their own dynamic electricity plans. As a Backend Engineer on the core infrastructure team, you'll design and scale the systems that power reliable billing and dynamic energy plans. What You'll Do

• Design elegant solutions to complex, ambiguous infrastructure challenges.
• Scale core backend services to handle dynamic billing, energy-market protocols, and accounting flows.
• Take ownership and ship with speed and confidence in a fast-paced environment.
• Continuously raise engineering standards across the team.

What We're Looking For

• Required: Proficient in backend development with TypeScript (Node.js) and a strong grasp of asynchronous programming.
• Required: Hands-on experience with PostgreSQL and an ORM (e.g. Drizzle) for data access.
• Required: Experience with Next.js, including API routes or server components for backend services.
• Required: Familiarity with distributed systems concepts and designing scalable, maintainable core services.
• Required: C1+ English language proficiency.
• Experience integrating Stripe payments and related billing flows.
• Strong written and verbal communication skills, ownership mindset, and comfort operating in ambiguous environments.
• Strong CS fundamentals — formal degree or equivalent practical experience.
• 3–10+ years of backend engineering experience.

Tech Stack

• TypeScript, Node.js, Next.js, Hono, Temporal
• PostgreSQL, Drizzle ORM
• Stripe, Tailwind

Compensation & Benefits

• Salary: $80,000 – $120,000 USD annually
• Visa sponsorship available

Location This is an on-site role based in Berlin, Germany. Candidates must be willing to work from the Berlin office.