AI Systems Engineer, Codex Agents is open at OpenAI in San Francisco. The posting gives a salary of $230K - $385K. Posted on May 15, 2026, and still on OpenAI’s careers page when we last checked, on Nov 14, 2026.
About the role
We’re looking for engineers to build the AI systems that make Codex agents dependable in production. The ideal candidate is an agent-systems builder: hands-on across low-level systems and ML workflows, able to debug Codex behavior end to end across the harness, model behavior, inference/runtime stack, GPU fleet, and product surface. You’ll work with research, infrastructure, and product to design agent harness…
The opening lines of the posting. The rest is on OpenAI’s careers page.
Hiring at OpenAI
OpenAI has 838 open roles right now, 31 of them remote. Most are in Engineering, Sales & Business Development and Data & Research. The median advertised salary across its roles with a published range is $308K. See all its roles
