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Research Engineer (Reinforcement Learning)
LiveKit
Remote · EMEA$11,250–25,000 gross/mofull-timeLiveKit Careers
About This Role We are looking for an exceptional engineer to build post-training at LiveKit. Our agents run over voice and increasingly over text channels like SMS and chat, and the interesting problems show up over long horizons: staying useful across many sessions, working with context that accumulates over time, and using tools reliably in the middle of a live conversation.
Responsibilities
- Build the environments and verifiers our models train against
- Own the synthetic data pipeline, from generation through the quality gates
- Run training experiments end to end, and explain what moved the model
- Build the evaluations a release has to clear
- Choose and adapt open-weight base models for our tasks
- Make trained behavior hold up for voice and text agents alike
- Ship models into production and keep improving them on real usage
Languages
- Work format
- Remote
- Seniority
- Mid
- Posted
- 18 Aug 2026
- Last verified
- In the last 5 days
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