Senior Backend Engineer (f/m/x)
Core
Design and implement scalable backend systems for a European B2B used car trading platform, leveraging AI tools and setting architectural standards.
Role type
Senior Backend Engineer (AI-first)
Builds
High-scale auction backend serving 40,000+ buyers across 20+ countries
Domain
B2B automotive trading / AI-powered operating systems
Deliverable
production ML models | product features
Required skills
TypeScript, Node.js, NestJS, PostgreSQL, Git, Docker, CI/CD, AI tooling integration, mentorship
Preferred skills
WebSockets, Elasticsearch, Lucene, Automotive domain knowledge, German language
Technologies
TypeScript, Node.js, NestJS, PostgreSQL, Git, Docker, JIRA, Confluence, AI coding agents, LLMs
Responsibilities
Select technology and design architecture, implement scalable features, set code quality and development standards, mentor engineers, challenge and improve workflows
Seniority
Senior, hands-on IC with mentorship responsibilities