Principal Software Engineer, Full Stack — Codex
About the Role
We’re hiring a Principal Software Engineer to help define and build the next generation of AI-powered software development workflows.
“Full stack” in this role extends well beyond traditional frontend and backend development. You will set technical direction and lead major product initiatives spanning user interfaces, developer tooling, workflow orchestration, agent and prompt design, backend systems, and cloud infrastructure.
This is a highly product-oriented technical leadership role. You will identify the highest-leverage opportunities across the software development lifecycle, turn ambiguous user and technical problems into durable product and system strategies, and lead execution across multiple engineers and partner teams. Your work will shape both the architecture of Codex and how developers around the world design, write, review, test, and maintain software.
You will operate as a senior individual contributor: remaining deeply involved in design and implementation while raising the technical judgment, execution quality, and ambition of the broader team.
In this role, you will
Set the technical and product direction for significant areas of Codex, translating an evolving product vision into scalable architecture
