(Senior) Software Engineer – Backend

About Reonic 🌱

At Reonic, we’re on a mission to simplify renewable technology with our B2B SaaS solutions for solar, storage, and heat pumps. Backed by top-tier investors and trusted by 1,000+ business customers, we’re expanding our engineering team—and we need YOU to help us drive this mission forward.

What You Will Do ✨

  • Backend Development: Design and implement scalable, robust backend solutions in TypeScript for our B2B SaaS platform.
  • Cloud Infrastructure: Ensure reliable CI/CD pipelines using GitHub Actions and automated deployment to AWS.
  • Database Administration: Monitor and optimize PostgreSQL systems, addressing performance and reliability issues.

What Makes You a Great Fit ✅

  • Proven Expertise: 4+ years of backend engineering experience in fast-paced or startup environments.
  • Technical Excellence: You write clean, maintainable code and well-organized documentation.
  • Tech Stack: Strong knowledge of Node.js, TypeScript, PostgreSQL, GraphQL, and Docker.
  • Bonus: Experience with AWS or other cloud infrastructure tools.
  • Ops Mindset: Familiarity with automated deployment, observability, and performance optimization.
  • Clean Energy Passion: Genuine interest in sustainability and renewable energy tech.
  • Extra Points: Contributions to open-source or notable achievements in the tech community.

Why Join Us?

  • 🚀 Make a Difference: A pivotal role in a VC-backed startup already loved by 1,000+ B2B customers
  • 🌍 Purpose-Driven Work: Help shape the future of renewable energy
  • 🧩 Shape Your Role: Nothing is set in stone—you have real influence
  • 📚 Growth-Minded: Learning new things is part of the job
  • 💰 Competitive Salary: Enjoy a rewarding compensation package
  • 🏋️‍♂️ Perks: Gym membership, coffee, team events, MacBook, and more

Location 📍

This is a full-time, in-office position based in Berlin (Alexanderplatz), with an additional office in Augsburg for those located in southern Germany.

🔗 Ready to Shape the Future of Renewable Energy?

If you’re a talented, ambitious Backend Engineer with a passion for clean energy, we want to hear from you!

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