Infrastructure Engineer

Luma AI in the SF Bay Area is seeking a Research Scientist / Engineer to design and operate the RL infrastructure for our multimodal models. You will help scale RL training and rollout across thousands of GPUs, integrating inference engines and building hermetic environments for long-horizon tasks. Ideal candidates have hands-on RL with post-training LLMs, distributed training expertise, and experience shaping reward systems and evaluation harnesses. #J-18808-Ljbffr