4 Tool-using LLM systems jobs

San Francisco, California, US (On-site)

$230–385K / year

About the Team The Codex Core Agent team builds the kernel of Codex.

San Francisco, California, US (On-site)

$230–385K / year

AI Systems Engineer - Codex Core Agents About The Team The Codex Core Agents team builds the agent harness that turns model capability into real-world action.

San Francisco, California, US (On-site)

$380–500K / year

About the Team The Agent Post-Training team creates the frontier agents OpenAI ships to the world.

San Francisco, California, US (On-site)

$380–500K / year

About the Team The Agent Post-Training team creates the frontier agents OpenAI ships to the world.