Backend Engineer – Python, AI, Greenfield – Berlin Hybrid – €80,000

Backend Engineer – Python, AI, Greenfield – Berlin Hybrid – €80,000 Join one of Europe’s fastest-growing ClimateTech companies and help build the backend systems powering the future of home energy. This is a rare opportunity to join a brand-new engineering team where you’ll help shape products, integrations and internal services from the ground up. You’ll work across a broad range of products and services, using AI-assisted development and modern engineering practices to solve real problems for thousands of customers. Why join? Greenfield environment with genuine ownership from day oneAI-supported development is the standard, not an experimentModern Python environment with varied technical challengesWell-known international ClimateTech company making a real environmental impactClear opportunities to take ownership and grow your technical responsibilities Benefits You’ll also receive an excellent benefits package including share options, subsidised meals, public transport support, flexible working hours, Wellpass membership, bike leasing, free language courses, childcare support, a generous pension scheme and plenty of other perks that come with working for one of Europe’s fastest-growing technology companies. What you’ll do Develop backend services powering the customer portal and internal platformsBuild integrations with third-party systems and external servicesCreate new standalone services, APIs and proof-of-conceptsImprove CI/CD, observability and automation across the platformOccasionally contribute to the frontend where requiredWork across different products and technologies as priorities evolve What you should bring Commercial backend development experience with PythonExperience designing and building REST APIsExperience integrating third-party systems and external servicesVery good German (B2+) and good English This role is ideal for a backend engineer who enjoys variety, ownership and solving complex technical challenges. If you’d like to build new services, integrate modern systems and play a key role in a growing engineering team, we’d love to hear from you. Interviews are starting now, so apply to avoid missing out. Keywords: Backend Engineer, Backend Developer, Python, FastAPI, Django, Flask, REST APIs, API Development, PostgreSQL, MySQL, SQL, React, Next.js, TypeScript, Docker, GitHub Actions, CI/CD, AWS, Cloud, OAuth 2.0, OIDC, JWT, Okta, Salesforce, SOQL, Apex, Vercel, Hetzner, GitHub, Observability, Prometheus, Logging, Monitoring, Webhooks, AI, Claude, LLMs, MCP, Greenfield, ClimateTech, Berlin.