Data Scientist, Codex

Details

OpenAI's Codex team builds developer-facing AI tools that help engineers design, write, test, and ship code faster, safely, and at scale. The team partners with research and product to translate model advances into tangible developer productivity.

Responsibilities

• Embed with the Codex product team to discover opportunities that improve developer outcomes and growth.
• Design and interpret A/B tests and staged rollouts of new coding models and product features.
• Define and operationalize metrics such as suggestion acceptance, edit distance, compile/test pass rates, task completion, latency, and session productivity.
• Build dashboards and analyses that help the team self-serve answers to product questions (by language, framework, repo size, task type).
• Diagnose failure modes and partner with Research on targeted improvements (model quality signals, user feedback, evals).

Requirements

• 5+ years in a quantitative role at a developer-facing or high-growth product.
• Fluency in SQL and Python.
• Comfort with experiment design and causal inference; experience designing and interpreting A/B tests and staged rollouts.
• Experience defining product metrics tied to user value and operationalizing those metrics.
• Ability to communicate clearly with Product Managers, Engineers, and Designers and to influence product direction.

Nice-to-haves / Additional fit

• Strong programming background with the ability to prototype, run simulations, and reason about code quality.
• Familiarity with IDE/extension telemetry or developer tooling analytics.
• Prior experience with NLP/LLMs, code models, or evaluations for generative coding.

Location & Work Model

• This role is based in San Francisco, CA. OpenAI uses a hybrid work model: 3 days in the office per week. Relocation assistance is offered to new employees.

Benefits

• Base salary range listed for this role; total compensation may include equity and performance-based bonus.
• Medical, dental, and vision insurance with employer contributions to Health Savings Accounts.
• Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses.
• 401(k) retirement plan with employer match.
• Paid parental, medical, and caregiver leave; PTO and paid company holidays.
• Mental health and wellness support; employer-paid basic life and disability coverage.
• Annual learning and development stipend; daily meals in offices and meal delivery credits as eligible.
• Relocation support for eligible employees and additional fringe benefits (charitable donation matching, wellness stipends).

About OpenAI

OpenAI is an AI research and deployment company focused on ensuring general-purpose AI benefits all of humanity. The company emphasizes safety, diversity, and equal opportunity hiring practices. Background checks may be administered in accordance with applicable law. OpenAI is committed to providing reasonable accommodations to applicants with disabilities.