We’re looking for an MLE to scale training of large transformer-based models. You’ll work on distributed training infrastructure, focusing on performance optimization, parallelization, and fault tolerance for multi-GPU and multi-node training environments.

Responsibilities:

• Performance engineering of training infrastructure for large language models
• Implementing parallelization strategies across data, tensor, pipeline, and context dimensions
• Profiling distributed training runs and optimizing performance bottlenecks
• Building fault-tolerant training systems with checkpointing and recovery mechanisms

Qualifications:

• 3+ years training large neural networks in production
• Expert-level PyTorch or JAX for performant and fault-tolerant training code
• Multi-node, multi-GPU training experience with debugging skills
• Experience with distributed training frameworks and cluster management
• Deep understanding of GPU memory management and optimization techniques

Preferred:

• Experience with distributed training of large multi-modal models, including those with separate vision encoders.
• Deep knowledge of NCCL (e.g. symmetric memory)
• Experience with mixture of experts architectures and expert parallelism
• Strong NVIDIA GPU programming experience (Triton, CUTLASS, or similar)
• Custom CUDA kernel development for training operations
• Proven ability to debug training instability and numerical issues
• Experience designing test runs to de-risk large-scale optimizations
• Hands-on experience with FP8 or FP4 training
• Track record of open-source contributions (e.g. DeepSpeed, TorchTitan, NeMO)