Backend Engineer (Visa Sponsorship - Berlin, Germany)

Visa sponsorship available. A German energy technology company is looking for a backend engineer for its core infrastructure team. The team builds systems that power dynamic electricity tariffs and reliable billing, with a focus on energy-market communication, billing, and accounting. This is a hands-on role in a fast-moving product environment where engineers own their work end to end.

What you'll do

• Design backend solutions that simplify complex billing and energy-market workflows.
• Scale core infrastructure to handle growing transaction volumes and market demands.
• Build and ship features and improvements through rapid, iterative development.
• Raise engineering standards through code reviews, architecture decisions, and mentoring other engineers.

What you need

• At least 3 years of hands-on backend engineering experience, including recent production code shipping.
• Strong TypeScript and Node.js skills, including asynchronous programming.
• Experience with PostgreSQL and ORM-based data access, plus backend services built with Next.js (API routes or server components).
• Familiarity with distributed systems and designing scalable, maintainable core services.
• Experience with payment and billing integrations (Stripe experience is a plus), strong computer science fundamentals, and evidence of exceptional technical ability such as standout projects, research, competition results, or founding work.
• Fluent or native German (C1 or higher), strong communication skills, and an ownership mindset.

How to apply

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