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Research Scientist / Engineer - Reinforcement Learning Infrastructure

Luma AI

Mid levelRedwood City, CA, USA

Build the backbone of reinforcement learning at scale.

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About Luma AI

Luma AI aims to create unified general intelligence that interacts with the physical world.

What you'd do

Design and scale RL post-training systems
Build high-throughput rollout generation
Create RL environments for multi-step tasks
Develop reward infrastructure and verifiers for rewards and defenses

What they're looking for

Hands-on experience with post-training LLMs and RL
Distributed PyTorch training and parallelism expertise
Experience with RL environments and evaluation harnesses
Familiarity with RL frameworks and rollout engines