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Software Engineer, Post-Training Research

OpenAI - San Francisco, California, United States

Posted Apr 29, 2026

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About this role

Software Engineer, Post-Training Research San Francisco, California, United States About the Team Post-Training is responsible for training the models to be deployed into ChatGPT, the API, and future products. The team partners closely with research and product teams across the company, and conducts research as a final step to prepare for real world deployment to millions of users, ensuring that our models are safe, efficient, and reliable. About the Role We are looking for a seasoned engineer who can help us with a variety of engineering challenges. Some example projects in this role: - Rapidly prototype and develop internal products or tools used by researchers, such as visualization for our evaluation of models. - Refactor a large code base for cleaner module designs. - Redesign experiment configuration and evaluation systems. Ideal candidates - Navigate large code bases independently and quickly - Can debug through complex systems - Can navigate high energy environments with fast changing priorities - Are comfortable being scrappy and working independently at fast speeds This role is based in San Francisco, CA. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: - Rapidly prototype and build tooling or visualization for researchers. - Collaborate with research teams. - Design, implement, test, and debug code across our stack. You might thrive in this role if you: - Strong background in writing maintainable, testable, clean code. - Enjoyment of code quality, refactoring, and

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