Software Engineer, Full-Stack - Core Experimentation

The role

You will build product experiences and platform capabilities for experimentation, feature flags, dynamic configuration, rollout safety, and analytics. You will work across frontend, backend, SDK, data, and infrastructure surfaces to support OpenAI products.

What you will do

• Build product experiences and platform capabilities for experimentation, feature flags, dynamic configuration, rollout safety, and analytics.
• Partner with product teams to understand launch workflows, measurement needs, and decision points.
• Improve SDK and server-side systems for high-scale OpenAI services.
• Help teams across ChatGPT, Codex, model measurement, ads, business subscriptions, developer products, and infrastructure use Statsig.
• Design workflows to create experiments, interpret results, monitor rollouts, and act on launch adjustments.
• Contribute to the technical direction of a platform supporting rapid adoption and high availability.
• Work from the Bellevue office with a team valuing ownership and clear communication.

Required qualifications

• Strong full-stack engineering judgment

Nice to have

• Enjoy building product surfaces that sit on top of serious platform and infrastructure constraints
• Care deeply about developer experience
• Excited by the post-acquisition chapter of a high-performing team
• Like working on systems where performance, reliability, and product quality all matter
• Can move between customer conversations, product design, backend architecture, SDK behavior, and data-informed decision making
• Want work to influence how OpenAI ships across various product surfaces
• Value in-person collaboration

About the company

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. The Statsig team within OpenAI builds experimentation, feature rollout, dynamic configuration, and analytics systems.