OpenAI
AI & Machine LearningDirect Ashby career site

Software Engineer, Collective Communication

Location
San Francisco, CA · Hybrid
Job type
Full-time
Level
Mid-level
Listed
30 days ago

Skills & highlights for this role

  • C++
  • CUDA
  • collective communication
  • RDMA

Also useful

  • network simulation

About the Role

As a Software Engineer, Networking you will design and implement custom networking collectives that are tightly integrated into our training stack.

We’re looking for people who have a background in low level performance critical software. Experience with collective communication is a bonus.

This role is based in San Francisco, CA. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees.

In this role, you will

  • Collaborate closely with ML researchers to design and implement efficient collective operations in C++ and CUDA.
  • Ensure that our largest training jobs take full advantage of the different network transports used in our supercomputers.
  • Work on simulations to inform our future supercomputer network designs.

You might thrive in this role if you

  • Have written distributed algorithms using RDMA in the past.
  • Are comfortable writing low level performance sensitive CPU and/or GPU code.
  • Are familiar with network simulation techniques.

About the Team

The Workload Networking team is responsible for the collective communication stack used in our largest training jobs. Using a combination of C++ and CUDA we work on novel collective communication techniques that enable efficient training of our flagship models on our largest custom built supercomputers.

The models we train are key ingredients to the AI research progress at OpenAI and the field as a whole, and we continually incorporate learnings from our entire research org into our training platform.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.

To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form No response will be provided to inquiries unrelated to job posting compliance.

Read the original posting

From OpenAI's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

Where is the Software Engineer, Collective Communication job at OpenAI located?

This Software Engineer, Collective Communication position at OpenAI is located in San Francisco, CA (Hybrid). Always check OpenAI's application page for specific state eligibility or relocation policies.

What qualifications are required for Software Engineer, Collective Communication at OpenAI?

For the Software Engineer, Collective Communication role, OpenAI highlights experience with C++, CUDA, collective communication, RDMA. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Software Engineer, Collective Communication position at OpenAI?

This listing links directly to OpenAI's Ashby application page. You can apply directly on OpenAI's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.