Applied AI Engineer, Codex Core Agent

Responsibilities

• Design and iterate on agent behaviors across real-world coding tasks and long-horizon workflows
• Work closely with research to develop and run evals to measure agent performance, regressions, and failure modes
• Improve performance through prompting, tool-use strategies, context construction, and model-facing experimentation
• Analyze production failures to systematically improve robustness and reliability
• Build feedback loops and data systems to integrate real-task data into evaluation and research
• Collaborate with product teams to shape user-facing agent experiences and interfaces

Requirements

• Experience building or shipping machine learning or LLM-powered products
• Strong Python skills and proficiency with modern ML tooling
• Experience with model evaluation, fine-tuning, or prompt design
• Ability to think in terms of systems and user outcomes rather than just model metrics
• Experience debugging complex, real-world failures

Preferred Qualifications

• Experience with agent frameworks or tool-using LLM systems
• Research experience with code generation models or developer tooling
• Experience working with large, messy datasets or production logs

Benefits

• Competitive salary ($230K – $385K) and generous equity
• Medical, dental, and vision insurance for you and your family
• 401(k) retirement plan with employer match
• Paid parental leave and flexible PTO
• Daily meals in our offices and meal delivery credits
• Annual learning and development stipend
• Mental health and wellness support

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.