Principal Software Engineer, Simulation

What this role involves

This Principal Software Engineer role at OpenAI leads the architecture of the Agent Harness Bridge, a critical integration layer between agentic coding infrastructure and research training systems. The role involves designing APIs, building reliable execution systems, and collaborating across teams. Ideal candidates have deep backend and infrastructure experience, particularly in Python and API design.

Skills this posting asks for

• python
• backend engineering
• infrastructure engineering
• api design
• systems design
• rust
• containerization

Requirements

• Level: principal
• Remote policy: onsite

From the employer’s posting

ABOUT THE TEAM OpenAI's research training infrastructure powers how our frontier models are trained and evaluated. The Simulation team sits at the intersection between the agentic harness that powers OpenAI's products and the research infrastructure where GPT-next is trained, ensuring that our mod…