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 one AI-supported development is the standard, not an experiment Modern Python environment with varied technical challenges Well-known international ClimateTech company making a real environmental impact Clear 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 platforms Build integrations with third-party systems and external services Create new standalone services, APIs and proof-of-concepts Improve CI/CD, observability and automation across the platform Occasionally contribute to the frontend where required Work across different products and technologies as priorities evolve What you should bring Commercial backend development experience with Python Experience designing and building REST APIs Experience integrating third-party systems and external services Very 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.