GrepJob
OpenAI

AI Systems Engineer, Codex Agents

OpenAI
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about 2 hours ago
San Francisco, CA, USAMid Level / Senior
H1B Sponsor

Base Salary

$230k - $385k/yr

Responsibilities

  • Design and build the core agent harness and execution loop for Codex agents.
  • Develop sandboxing, isolation, orchestration, and workflow infrastructure for agents.
  • Create evaluation and debugging systems to identify issues across the agent stack.
  • Run experiments to improve solve rate, reliability, latency, and cost.
  • Enhance observability and diagnostics across the agent stack.
  • Collaborate with research to make the harness trainable and useful for model improvement.
  • Build shared primitives to enhance Codex's performance and usability.

Requirements

  • Experience building or operating production systems in distributed systems or ML.
  • Proficiency in Rust systems code and Python configuration layers.
  • Hands-on experience with LLM applications and model deployment.
  • Strong debugging skills and ability to address production failures.
  • Desire to work closely with research while delivering production changes.
  • Ability to write meaningful code and lead AI systems projects.

Tech Stack