Frontend Software Engineer, Codex App

The Codex App team builds and maintains the Codex desktop app and IDE extension. We're hiring a Frontend Software Engineer to build a top-tier desktop experience and push forward the interface for working with agents.

• Build and ship polished, high-performance UI across the Codex desktop app and IDE extension.
• Partner tightly with design to turn prototypes into production-quality experiences (layout, motion, typography, interaction details).
• Iterate on future interfaces for interacting with agents: delegation, task timelines, status/progress, handoffs, review, and control surfaces.
• Own frontend architecture decisions (component systems, state management, navigation, rendering performance).
• Improve quality and reliability through testing, instrumentation, and thoughtful UX for failure modes.
• Collaborate with platform/model/backend partners to integrate new capabilities into cohesive product flows.

• Have strong experience with modern frontend stacks (React, TypeScript) and a high bar for UI craft.
• Love design engineering: sweating the details while keeping velocity.
• Have built desktop-caliber product experiences (Electron or similar), and care about performance, responsiveness, and 'it just feels right.'
• Enjoy exploring ambiguous problems and iterating rapidly with design and product.
• Think in end-to-end workflows, not isolated screens.
• Have experience with developer tools or IDE extensions (nice-to-have).