Principal Software Engineer, Agent Harness Bridge
Core
Designing and evolving the integration layer connecting the Codex harness to research training infrastructure to enable agentic coding runtimes for large-scale model training.
Role type
Principal Software Engineer (Backend/Infrastructure)
Builds
Containerized execution systems, APIs, and operational patterns for research training workloads.
Domain
AI Research Infrastructure / Large-scale Model Training
Deliverable
production ML models
Required skills
Backend system design, API design, Systems architecture, Python, Cross-functional leadership, Operational rigor, Scalability engineering
Preferred skills
Rust, Product sense for technical users, Experience with fast-moving environments
Technologies
Python, Rust, Containerization
Responsibilities
Design and evolve the bridge between Codex harness and research training infrastructure; Own major integration surfaces end-to-end; Build reliable, containerized execution systems; Partner with research and platform teams; Design clean interfaces for internal users; Prevent technical debt through durable abstractions; Raise standards for correctness and reliability.
Seniority
Principal, hands-on IC with strategy & mentorship
