Research Engineer, Codex

OpenAI
San Francisco
Workplace: HybridFull timeUSD 380,000 - 460,000 annuallyFunction: Research & Scientific (R&D)Skills: ["Collaboration","Communication","Problem-solving","Creativity"]

Join the Codex team to advance AI coding models through research, experimentation, and system optimization. Collaborate with researchers and engineers to improve code generation, reasoning, and efficiency, balancing performance and cost for production-ready deployments that serve millions of users. Hybrid role based in San Francisco, with relocation support.

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FursaFursa
OpenAI
OpenAI
1 year ago

Research Engineer, Codex

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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 team to advance AI coding models through research, experimentation, and system optimization. Collaborate with researchers and engineers to improve code generation, reasoning, and efficiency, balancing performance and cost for production-ready deployments that serve millions of users. Hybrid role based in San Francisco, with relocation support.
Location: San Francisco
Workplace: Hybrid
Employment Type: Full time
Job Function: Research & Scientific (R&D)

Key Responsibilities

  • •Design and run experiments to improve code generation, reasoning, and agentic behavior in Codex models.
  • •Develop research insights into model training, alignment, and evaluation.
  • •Hunt down and address inefficiencies across the Codex system stack—from agent behavior to LLM inference to container orchestration—and land high-leverage performance improvements; build tooling to measure, profile, and optimize system performance at scale.
  • •Work across the stack to prototype new capabilities, debug complex issues, and ship improvements to production.

Pay and Benefits

Salary: USD 380,000 - 460,000 annually
Equity and Bonus:Equity
Perks:Relocation

Key Requirements

  • •Strong software engineering skills and the ability to turn ideas into working prototypes.
  • •Experience operating across ML systems and cloud infrastructure.
Experience:AI/MLSoftware
Skills:CollaborationCommunicationProblem-solvingCreativity
Tech Stack:LLMCloudContainersProfilingSystem optimizationInference

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
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