Senior Backend Engineer (m/w/d)

• You own backend development end to end: technology selection, architecture design, and implementation of the features that carry platform performance and scale
• You build AI-first. Coding agents, LLMs and AI-assisted development are part of the daily workflow here, not a pilot project
• You set the standards: code quality benchmarks, development practices and CI/CD pipelines, agreed cross-functionally and enforced in review
• You mentor the engineers around you, share what you know, and raise the bar on backend practice
• You challenge how we work. When our approach is wrong, you say so and you bring the better one

• 8+ years in software engineering, 5+ of them focused on backend
• Deep TypeScript proficiency, with strong Node.js, NestJS and PostgreSQL experience
• A proven mentorship track record: you have coached engineers and raised the standard around you
• Solid command of Git, Docker and CI/CD pipelines
• Comfortable in Scrum or Kanban, working with JIRA and Confluence
• English at C1 level, written and spoken, for daily work with an international team
• AI-native working style: you use AI tools in your own development workflow and have real judgement about where they accelerate you and where they don't
• Based in Berlin or ready to relocate

Nice to have

• WebSockets or other real-time systems
• Search frameworks such as Elasticsearch or Lucene
• Automotive or B2B trading background
• Conversational German

What to expect from us

• Location: Central Berlin
• Hybrid working: 3 days in office, 2 days remote – plus 25 "Work from Anywhere" days per year
• 28 days annual leave
• 2× annual career & development conversations
• Company pension with 20% employer contribution
• Fully paid Deutschlandticket (public transport)
• FitX membership or Urban Sports Club subsidy
• Virtual stock options — share in the upside
• Modern IT setup for your day-to-day work
• Structured onboarding with buddy programme and social events
• Lived diversity: active women's network, meditation & prayer room