Backend Engineer

About the Role Join the core infrastructure team of a fast-growing energy technology company building the operating system for the next generation of European energy. The platform combines a modular billing engine, low-level energy-market communication protocols, and a full accounting ledger — delivered as a headless, API-first layer that enables hardware companies and energy providers to launch dynamic electricity plans rapidly. As a Backend Engineer, you will work across highly complex, distributed systems that power real-time electricity pricing, billing, and market integrations. This is a high-ownership role for engineers who love designing for scale and operating with autonomy in a fast-moving environment. What You'll Do Solve for complexity through design — Architect clean, maintainable solutions to inherently hard infrastructure problems in energy billing and market communication. Scale the core — Contribute to scalable, reliable backend services that handle dynamic pricing, billing flows, and ledger operations at volume. Bias for action — Move quickly and decisively; ship meaningful work and iterate with purpose. Raise the bar — Uphold and improve engineering standards through code review, documentation, and thoughtful system design. What We're Looking For Required: Bachelor's degree in Computer Science or equivalent practical experience 3–10+ years of backend engineering experience Proficiency in TypeScript (Node.js) with a strong grasp of asynchronous programming Hands-on experience with PostgreSQL and an ORM (experience with Drizzle is a plus) Experience with Next.js , including API routes or server components used for backend services Familiarity with distributed systems concepts and designing scalable, maintainable core services Experience integrating Stripe payments and related billing flows Strong written and verbal communication skills in English Ownership mindset and ability to operate effectively in a fast-paced, ambiguous environment Willingness to work on-site in Berlin, Germany Nice to Have: Familiarity with workflow orchestration tools (e.g., Temporal) Experience with lightweight HTTP frameworks (e.g., Hono) Background in energy, utilities, fintech, or similarly regulated/complex domains Tech Stack Languages & Frameworks: TypeScript, Node.js, Next.js, Hono Database: PostgreSQL, Drizzle ORM Payments: Stripe Orchestration: Temporal Frontend (context): Tailwind CSS Compensation & Benefits Salary: €80,000 – €120,000 per year, depending on experience Visa sponsorship is available for qualified candidates Early-stage equity opportunity at a well-backed pre-seed company Location This is a full-time, on-site role based in Berlin, Germany . The team works together in-person and values close collaboration. Relocation support and visa sponsorship are available.