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Research Scientist / Engineer – Reinforcement Learning Infrastructure

Luma AI · London, UK

Research Scientist / Engineer – Reinforcement Learning Infrastructure is open at Luma AI in London, UK (hybrid). Posted on Oct 8, 2026, and still on Luma AI’s careers page when we last checked, on Nov 14, 2026.

About the role

You'll build the systems that make reinforcement learning work at frontier scale — coupling policy optimization with large fleets of inference workers, agentic environments, and the reward and verification systems that turn model behavior into learning signal. RL is how Luma's models go from capable to useful. RL at scale is a full-loop systems problem: training, rollout generation, environment execution, and reward…

The opening lines of the posting. The rest is on Luma AI’s careers page.

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Luma AI has 17 open roles right now, 2 of them remote. Most are in Data & Research, Design and Sales & Business Development. See all its roles

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