Senior Software Engineer (Backend) – Large Assets Squad – C#, .NET (m/w/d)

Overview

Location: Hamburg, Germany (Hybrid – up to 2 remote days/week)

Tech Stack: .NET / C#

• Cloud (GCP or Azure)
• Docker
• Kubernetes
• Team Size: 4 Engineers (2 Frontend & 2 Backend), based in Hamburg & Berlin
• Employment Type: Full-time, Permanent

Why This Role Matters

As a Senior Software Engineer (Backend), you’ll work on the systems that connect large energy assets (such as EVs and heat pumps) into our ecosystem. Your work will directly enable customers to integrate new hardware providers, optimize energy usage, and unlock the full potential of dynamic energy pricing.

This role sits at the intersection of hardware integration, backend platforms, and energy intelligence, and is ideal for an engineer who enjoys complex integrations, distributed systems, and close collaboration with product and data teams.

What You’ll Do

• Design, build, and maintain backend services and APIs that integrate EVs, heat pumps, and external hardware providers into Rabot’s platform.
• Lead the integration of external providers and manufacturers, ensuring reliable, scalable, and maintainable connections.
• Collaborate closely with the Optimization team (Data Scientists, Data Engineers, Product Managers) to enable intelligent energy orchestration across assets.
• Work closely with Frontend Engineers to design and implement APIs that expose complex energy data in a meaningful way for customers.

What You Bring

Must-Have Experience

• 5+ years of backend software development experience.
• Strong proficiency in C# and .NET Core.
• Solid understanding of MongoDB, Docker, Kubernetes, and cloud environments (GCP and/or Azure).
• Good understanding of distributed systems and API design.
• Experience with CI/CD pipelines, test-driven development (TDD), and agile development principles.
• Knowledge of AI Coding Tools (Claude, Cursor, etc.)
• Collaborative mindset with a customer-focused engineering approach.
• Based in, or willing to relocate to Hamburg.
• Fluency in English.

What Success Looks Like (6–12 Months)

• You’ve successfully integrated multiple external hardware providers into Rabot’s ecosystem.
• EV and heat pump integrations are stable, scalable, and well-documented.
• Existing backend systems have been improved and refactored to support new assets and brands.

Why Join Rabot Energy

• Be part of a mission-driven company shaping the future of green energy in Europe
• Work with modern technologies and a talented, passionate engineering team
• Enjoy flexible hybrid work, with up to 2 remote days per week
• Access to learning, development, and well-being programs, including Urban Sports Club membership
• Flat hierarchies, quick decisions, and space to make a real impact
• Workation: 2 weeks per year from anywhere in the EU
• Extra holidays on Christmas Eve and New Year’s Eve

About Us

Rabot Energy is an independent supplier of 100 % renewable energy, offering dynamic electricity tariffs to private and business customers. By passing on exchange buying prices to our customers, we can save them up to 35 % on their electricity bills. Electric vehicle owners particularly benefit from our dynamic electricity tariff, as we have developed a smart system that signals the car when to automatically charge during periods of low electricity prices. And this is just the beginning!

Our mission is to empower every consumer to efficiently manage their energy consumption costs while safeguarding the environment and natural resources. Through our provision of 100% renewable energy and comprehensive smart charging and energy management solutions for homes, Rabot Energy actively contributes to increasing the real green power share in Germany's electricity consumption, thus driving the energy transition forward.

Be part of something unique, the first of its kind in Germany. Join us at Rabot Energy and seize abundant growth opportunities in the thriving world of green energy. We're a team that believes in the power of our mission, and we're looking for individuals with the passion to match ours!”

Jan Rabe, CEO

At Rabot Energy, we cherish cognitive diversity as a cornerstone of our global culture and a driving force behind our mission to craft truly representative and impactful products for a sustainable future. We wholeheartedly embrace diversity in all its dimensions and recognize that each person contributes to our shared endeavour of assisting individuals in transitioning to green energy.