GrepJob
OpenAI

Principal Software Engineer, Agent Harness Bridge

OpenAI
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about 3 hours ago

Base Salary

$347k - $490k/yr

Responsibilities

  • Design, build, and evolve the bridge between the Codex harness and research training infrastructure.
  • Own major integration surfaces end-to-end, from architecture and API design through rollout and maintenance.
  • Build reliable, containerized execution systems for demanding training workloads.
  • Collaborate with research, agent, infrastructure, and platform teams to support new training use cases.
  • Design clean, stable interfaces for technical internal users.
  • Establish durable abstractions and clear ownership to prevent technical debt.
  • Raise the bar for correctness, reliability, and operational rigor across the system.

Requirements

  • Significant experience building and scaling backend or infrastructure systems.
  • Deep strength in API design, systems design, and engineering fundamentals.
  • Detail-oriented with a focus on correctness, reliability, and operational quality.
  • Ability to work with demanding technical users while maintaining engineering discipline.
  • Track record of leading cross-functional technical efforts.
  • Strong product sense and user empathy for internal platforms.
  • Proficient in Python; Rust experience is a plus.

Tech Stack

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