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Luma AILuma AI

Research Scientist / Engineer – Training Infrastructure

Builds and optimizes distributed training infrastructure for large-scale multimodal AI models across thousands of GPUs. Requires deep expertise in PyTorch, CUDA, parallelization techniques, and GPU clusters.

About the job

Responsibilities

  • Design, implement, and optimize efficient distributed training systems for models with thousands of GPUs
  • Research and implement advanced parallelization techniques (FSDP, Tensor Parallel, Pipeline Parallel, Expert Parallel)
  • Build monitoring, visualization, and debugging tools for large-scale training runs
  • Optimize training stability, convergence, and resource utilization across massive clusters

Experience

  • Extensive experience with distributed PyTorch training and parallelisms in foundation model training
  • Deep understanding of GPU clusters, networking, and storage systems
  • Familiarity with communication libraries (NCCL, MPI) and distributed system optimization

(Preferred)

  • Strong Linux systems administration and scripting capabilities
  • Experience managing training runs across >100 GPUs
  • Experience with containerization, orchestration, and cloud infrastructure

Compensation

Base pay range: $187,500 – $395,000 per year

Skills

PyTorch, CUDA, Distributed Systems, Fsdp, Tensor Parallel, Pipeline Parallel, Expert Parallel, Nccl, Mpi, Kubernetes

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