Backend Engineer

About the Role

This is a Backend Engineer role on the core infrastructure team at a pre-seed energy technology startup building the operating layer for next-generation dynamic electricity plans. You will help design and scale a modular billing engine, low-level energy-market communication protocols, and a full accounting ledger, foundational systems that power how energy is priced, delivered, and billed.

What You'll Do

Design for complexity: architect scalable, maintainable backend systems that handle real-world energy billing and market data challenges.

Scale the core: build and improve the infrastructure underpinning dynamic electricity plans and reliable billing flows.

Ship with ownership: take features from design through production with a bias for action and a high bar for quality.

Raise standards: contribute to engineering culture, code quality, and technical decision-making as an early team member.

What We're Looking For

At least 3 years of experience building reliable backend infrastructure in production environments.

Proficiency in TypeScript and Node.js, including strong command of asynchronous programming patterns.

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

Hands-on experience with Next.js backend services, including API routes or server components.

Familiarity with distributed systems concepts and designing scalable, maintainable core services.

Experience integrating Stripe payments and billing flows is a plus.

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

A track record of technical exceptionality: standout projects, competition results, research, founding experience, or comparable evidence.

Experience in an early-stage startup environment, or demonstrated genuine interest in that context.

Background in application-centric product or infrastructure work rather than narrowly specialized domains such as data pipelines or AI infrastructure.

Fluency in German at C1 level or above.

Currently working as a hands-on individual contributor with recent production coding and shipping experience.

Compensation & Benefits

Salary: EUR 80,000 to EUR 120,000 per year.

Visa sponsorship is available.

Location

On-site in Berlin, Germany, five days per week.