DeepL is hiring a Senior Senior NLP Engineer — translation AI on the NLP team (Hybrid · Cologne, Germany). This is a hands-on role in LLM & generative AI—not a generic “AI enthusiast” post.
You will own LLM features, retrieval, agents, and evaluation end to end: problem framing, offline evaluation, safe rollout, and iteration from production signals. Success is measured with clear metrics (quality, latency, cost, or business KPIs)—not slide decks alone.
DeepL sets the bar for machine translation quality with research and product teams in Cologne.
Improve neural MT and LLM-assisted translation with rigorous quality metrics.
What you will do
- Ship production NLP and machine translation with offline evals, monitoring, and safe rollout.
- Work with product and domain experts on requirements and trade-offs.
- Improve data pipelines, labeling, and metrics tied to business KPIs.
- Document runbooks for on-call and customer-facing teams.
What we look for
- Strong Python and modern ML/LLM stack with shipped features.
- SQL, experimentation, and clear communication to stakeholders.
- Eligible to work in the listed country; professional English required.