Frontend Software Engineer, Codex App

OpenAI · London, England, United Kingdom

Location
London
Job Type
Full time
Posted
June 03, 2026

Job Description

About the Team

The Codex App team builds and maintains the Codex desktop app and IDE extension — the primary ways developers interact with Codex. Our goal is to make AI feel like a real software engineering teammate inside real workflows: editing code, running tasks, reviewing changes, and coordinating long-running work.

We sit at the intersection of research, product, and design. We ship quickly, learn from real usage, and continuously refine both the experience and the harness that connects users to the model.

About the Role

We’re hiring a Frontend Software Engineer to build a top-tier desktop experience and push forward the interface for working with agents. This is a craft-heavy role: you’ll partner closely with design to prototype, iterate, and polish new interaction models — then turn them into reliable, high-performance product.

You’ll help define what great looks like for “human ↔ agent” collaboration: w...

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