Senior Backend Engineer (all genders)

Babbel·Berlin·Remote·Posted 30 October 2026

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About the role

ABOUT BABBEL LABS Babbel Labs is building the future of language learning. We are an AI-first, independent company within the Babbel group, based in Berlin. Our teams bring AI, research and product together to ship experiences that set a new standard for how people learn. THE ROLE Babbel Labs is rebuilding how learning content is created, stored and served, and how we decide what a learner sees next. The architecture for that is being set now, by a small number of engineers, and this role is one of them. You will build and run the services behind it, in a serverless-first TypeScript and Node stack on AWS, owning them from the contract at their edge to their behaviour under load. This is a senior individual-contributor role. You will design, build, ship and operate, and the seniority shows in the decisions you own rather than in a team reporting to you. HOW YOU'LL MAKE AN IMPACT - Build and evolve services across our learning platform, owning each one from its API contract through to what runs in production. - Take on services you did not write, alongside the people who did. - Design API and data contracts that hold up over time, with type-safe transforms…

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