Backend Engineer

Summary

Join Ostrom, a leading European energy management platform company, as a Backend Engineer. You will be part of a 16-person tech team, working on new business projects and improving operational efficiency. Your responsibilities include designing and building backend solutions, participating in tech stack decisions, developing a scalable platform for the renewable energy sector, and integrating new product lines. The ideal candidate has 3+ years of backend development experience, strong TypeScript/Python skills, and experience with relational databases. Ostrom offers a hybrid work model, relocation support, a trust-based team culture, and personal development opportunities.

Requirements

• 3+ years of backend development experience
• Strong experience with TypeScript and/or Python
• Confident designing and building APIs
• Solid understanding of relational databases
• Commitment to writing clean, testable code (unit, integration, and E2E testing)
• Comfortable working on greenfield projects and building systems from the ground up
• Strong communication skills and fluency in English

Responsibilities

• Design and build backend solutions from scratch
• Take part in tech stack decisions—choosing the best tools, frameworks, and processes for the team
• Help develop a scalable platform for the renewable energy sector using modern technologies
• Integrate new product lines like smart meters, dynamic pricing, EV charging, and more

Preferred Qualifications

• Experience with AWS services (ECS, RDS (Aurora), S3, CloudWatch, Lambda)
• Familiarity with CI/CD workflows (e.g., Docker, GitHub Actions)
• Experience with React or React Native, or w illingness to learn new technologies and take on full-stack tasks when needed
• Experience using AI tools (e.g., for debugging, documentation, testing)—we value developers who integrate AI into their daily workflow to boost productivity, but also have a practical mindset — we’re not into vibe coding. We appreciate thoughtful engineering and clear thinking

Benefits

• We offer a hybrid work model with a dog-friendly office in Berlin, Mitte, in case you prefer working in the office
• Relocation package: If you want to move to Germany, we offer a visa and relocation support
• Personal development: You receive an annual growth budget, encompassed with frequent development 1:1’s and development cycles held twice a year
• Benefits: From monthly team events to discounted gym membership, ticket for public transport, e-Moped or e-Bike via Dance, Futurebens, and monthly vouchers