Software Engineer, Codex Core Agents

OpenAI
San Francisco, Seattle, New York, London
Workplace: OnsiteFull timeUSD 230,000 - 325,000 annuallyFunction: Software EngineeringSkills: ["Communication","Problem-solving","Teamwork","Collaboration","Adaptive"]

Join the Codex Core Agent team to build the infrastructure powering Codex agents in production. You’ll design execution environments, orchestration, and memory systems for long-running, tool-using tasks, aiming to optimize performance, reliability, and security at scale, while enabling other teams to build on Codex.

Loading

Loading job details...

Preparing the role view and application actions.

FursaFursa
OpenAI
OpenAI
5 months ago

Software Engineer, Codex Core Agents

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 1 hour agoStatus: Live

Job Summary

Join the Codex Core Agent team to build the infrastructure powering Codex agents in production. You’ll design execution environments, orchestration, and memory systems for long-running, tool-using tasks, aiming to optimize performance, reliability, and security at scale, while enabling other teams to build on Codex.
Location: San Francisco, Seattle, New York, London
Workplace: Onsite
Employment Type: Full time
Job Function: Software Engineering

Key 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 Codex’s production fleet.
  • •Support model rollouts, capacity planning, and the core tradeoffs between quality, speed, and economics to manage a fleet of frontier agents at scale.
  • •Build shared platform capabilities that unblock product teams, partner teams, and open source Codex.

Pay and Benefits

Salary: USD 230,000 - 325,000 annually
Equity and Bonus:Equity
Perks:Equity

Key Requirements

  • •Experience with distributed systems or infrastructure engineering.
  • •Experience building systems involving containers, sandboxing, or virtualization.
  • •Ability to work across backend systems, APIs, and developer tooling.
  • •Strong focus on system reliability, performance, and security.
  • •Ability to work on ambiguous, zero-to-one problems.
Experience:AISoftware
Skills:CommunicationProblem-solvingTeamworkCollaborationAdaptive
Tech Stack:DockerKubernetesCI/CDSandboxingVirtualizationAPIsSDK

Company Brief

OpenAI
Develops and deploys advanced generative AI models (including ChatGPT and DALL·E) and AI infrastructure, providing APIs and consumer products to accelerate safe AGI for broad benefit.
Industry: AI & Machine Learning
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Scaleup
Valuation: Hectocorn (USD 100B+)
Funding: Series E+
Headquarters: San Francisco, United States
Founded: 2015
Glassdoor
Glassdoor: 4.4
WebsiteLinkedInGlassdoor