Software Engineer, Codex Core Agents

Responsibilities

• Design and build execution environments for AI agents, including sandboxing, isolation, and reproducibility.
• Develop systems for agent orchestration across multi-step, tool-using workflows.
• Build infrastructure for running, testing, and debugging code generated by models.
• Create state and memory systems that allow agents to persist context across long-running tasks.
• Optimize tokens, latency, reliability, and cost across the production fleet.
• Support model rollouts, capacity planning, and the core tradeoffs between quality, speed, and economics.
• Build shared platform capabilities that unblock product teams and open source Codex.

Requirements

• Strong experience in distributed systems or infrastructure engineering.
• Proven experience building systems involving containers, sandboxing, or virtualization.
• Proficiency working across backend systems, APIs, and developer tooling.
• Deep commitment to system reliability, performance, and security.
• Ability to thrive when working on ambiguous, zero-to-one problems.

Preferred Qualifications

• Experience with code execution platforms, CI/CD systems, or build systems.
• Familiarity with LLMs, agents, or tool-use frameworks.
• Background in security engineering or isolation systems.
• Experience building developer platforms, IDE tooling, or open source infrastructure.

Benefits

• Competitive salary ($230K – $385K) and generous equity.
• Comprehensive medical, dental, and vision insurance.
• 401(k) retirement plan with employer match.
• Paid parental leave and flexible PTO.
• Daily meals in the office and meal delivery credits.
• Annual learning and development stipend.

About the Company

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.