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OpenAI Logo OpenAI · IT - Software Development

Software Engineer, Hardware

United States, San Francisco 266000.00 - 455000.00 USD / Year · Job Posted February 21, 2026
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Job Description

As a software engineer on the Scaling team, you’ll help build and optimize the low-level stack that orchestrates computation and data movement across OpenAI’s supercomputing clusters. Your work will involve designing high-performance runtimes, building custom kernels, contributing to compiler infrastructure, and developing scalable simulation systems to validate and optimize distributed training workloads. You will work at the intersection of systems programming, ML infrastructure, and high-performance computing, helping to create both ergonomic developer APIs and highly efficient runtime systems. This means balancing ease of use and introspection with the need for stability and performance on our evolving hardware fleet.

Job Responsibility

  • Design and build APIs and runtime components to orchestrate computation and data movement across heterogeneous ML workloads
  • Contribute to compiler infrastructure, including the development of optimizations and compiler passes to support evolving hardware
  • Engineer and optimize compute and data kernels, ensuring correctness, high performance, and portability across simulation and production environments
  • Profile and optimize system bottlenecks, especially around I/O, memory hierarchy, and interconnects, at both local and distributed scales
  • Develop simulation infrastructure to validate runtime behaviors, test training stack changes, and support early-stage hardware and system development
  • Rapidly deploy runtime and compiler updates to new supercomputing builds in close collaboration with hardware and research teams
  • Work across a diverse stack, primarily using Rust and Python, with opportunities to influence architecture decisions across the training framework

Requirements

  • Proficient in systems programming (e.g., Rust, C++) and scripting languages like Python
  • Experience in one or more of the following areas: compiler development, kernel authoring, accelerator programming, runtime systems, distributed systems, or high-performance simulation
  • Deep curiosity for how large-scale systems work and enjoy making them faster, simpler, and more reliable
  • Excited to work in a fast-paced, highly collaborative environment with evolving hardware and ML system demands
  • Value engineering excellence, technical leadership, and thoughtful system design

What we offer

  • Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
  • 401(k) retirement plan with employer match
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
  • 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time (1 hour per 30 hours worked, or more, as required by applicable state or local law)
  • Mental health and wellness support
  • Employer-paid basic life and disability coverage
  • Annual learning and development stipend to fuel your professional growth
  • Daily meals in our offices, and meal delivery credits as eligible
  • Relocation support for eligible employees
  • Additional taxable fringe benefits, such as charitable donation matching and wellness stipends, may also be provided
  • Offers Equity
  • Performance-related bonus(es) for eligible employees
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