Software Engineer, Trainium

As a Software Engineer, Trainium, you will help bring OpenAI's inference workloads to AWS Trainium and build the software stack required to run cutting-edge frontier models efficiently on the platform. This is a deeply technical, cross-stack role spanning kernels, compilers, and model execution. You will work on the systems needed to support OpenAI's inference stack on Trainium, including developing and optimizing high-performance kernels, improving compiler support, and enabling efficient execution of the model forward pass. You'll work closely with engineers across inference, compilers, kernels, and ML systems to identify performance bottlenecks and build the software needed to take full advantage of Trainium. The work may range from low-level hardware-specific optimization to compiler and runtime improvements to integrating new model architectures into the inference stack.

Responsibilities

Build and optimize OpenAI's inference stack for AWS Trainium; Develop high-performance kernels for critical model operations and workloads; Extend and improve compiler support to efficiently target Trainium hardware; Build the systems necessary to execute and optimize the model forward pass on Trainium; Profile workloads and identify bottlenecks across kernels, compiler-generated code, runtime, and model execution; Partner with inference and ML systems teams to bring new models and architectures onto Trainium; Work across the hardware/software boundary to unlock performance and capabilities from specialized AI accelerators; Own complex performance and systems problems end-to-end, from investigation through production deployment

Requirements

3+ years of relevant engineering experience, ideally in ML systems, compilers, kernels, runtimes, or performance engineering; Strong systems programming fundamentals and experience writing performance-critical software; Experience working with GPU, TPU, Trainium, or other specialized accelerator architectures; Ability to reason about performance across multiple layers of the stack, from hardware and kernels through compilers and ML frameworks; Owning technically ambiguous problems end-to-end and learning new hardware and software domains as needed

Nice to have

Experience with AWS Trainium or the AWS Neuron SDK; Contributions to ML frameworks such as PyTorch or JAX, compiler infrastructure such as LLVM, MLIR, XLA, or Triton, or experience developing kernels for specialized accelerators