Backend Engineer

ABOUT THE ROLE

This is a core infrastructure role at a pre-seed energy technology company building the foundational systems that power dynamic electricity plans, billing, and energy-market integrations across Europe. You will work directly on a modular billing engine, low-level energy-market communication protocols, and a full accounting ledger, helping design and scale systems that need to be both highly reliable and deeply extensible.

WHAT YOU'LL DO

- Design systems that tame complexity, making hard infrastructure problems approachable and maintainable at scale.

- Scale core backend services to handle the demands of a growing energy platform serving OEMs, installers, and end consumers.

- Ship production code consistently, taking full ownership from design through deployment.

- Raise engineering standards across the team through code review, architecture decisions, and a high personal bar for quality.

WHAT WE'RE LOOKING FOR

- At least 3 years of hands-on experience building and shipping reliable backend infrastructure in production environments.

- Proficiency in TypeScript and Node.js, with a strong understanding of asynchronous programming patterns.

- Experience with PostgreSQL and ORM-based data access (Drizzle or similar).

- Experience building backend services with Next.js, including API routes or server components.

- Familiarity with distributed systems concepts and an instinct for designing scalable, maintainable services.

- Experience integrating payment systems such as Stripe and handling complex billing flows.

- Strong computer science fundamentals, whether through a formal degree or equivalent practical experience.

- A track record of technical exceptionality, demonstrated through standout projects, competitive programming, research, founding work, or a comparable signal.

- Broad application-building experience rather than a narrow specialization in data pipelines, AI infrastructure, or similar niches.

- Strong written and verbal communication, with a clear ownership mindset and comfort operating in a fast-moving, ambiguous environment.

COMPENSATION & BENEFITS

- Salary: 80,000 to 120,000 EUR annually

- Visa sponsorship: available

LOCATION

On-site in Berlin, Germany, five days per week. Remote work is not available for this role.