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 owns the desktop application and IDE extension that bring Codex into developers’ daily workflows. We build product experiences end-to-end, and we care equally about usability, performance, and reliability.

Our stack is centered on a TypeScript/Node/Electron application that interfaces with external systems including the Codex CLI and app server (Rust). Building great features here often means designing clean boundaries between UI, local services, and native processes — and making the whole system observable and resilient.

About the Role

We’re hiring a Full Stack Software Engineer to build and evolve the systems that power the Codex desktop app and IDE extension. “Full stack” here means owning flows from UI → Node/TypeScript backend layers → IPC/process orchestration → integration with Rust services.

This is a product-minded role. You’ll help define workflows, pick the right abst...

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