Frontend Software Engineer, Codex App

at OpenAI
USD 230,000-385,000 per year
MIDDLE
✅ On-site
✅ Relocation

Used Tools & Technologies

Not specified

Required Skills & Competences

TypeScript @ 6 React @ 6 Codex @ 3 AI @ 3

Details

The Codex App team builds and maintains the Codex desktop app and IDE extension — the primary ways developers interact with Codex. The team sits at the intersection of research, product, and design and focuses on making AI feel like a real software engineering teammate inside developer workflows: editing code, running tasks, reviewing changes, and coordinating long-running work.

Responsibilities

  • 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 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, and backend partners to integrate new capabilities into cohesive product flows.

Requirements

  • Strong experience with modern frontend stacks (React, TypeScript) and a high bar for UI craft.
  • Experience building desktop-caliber product experiences (Electron or similar) and care about performance and responsiveness.
  • Comfortable working closely with design to prototype, iterate, and polish interaction models.
  • Experience making frontend architecture decisions: component systems, state management, navigation, and rendering performance.
  • Experience with testing and instrumentation to improve quality and reliability.
  • Experience with developer tools or IDE extensions is a nice-to-have.
  • Ability to explore ambiguous problems and iterate rapidly with design and product, thinking in end-to-end workflows.

Benefits

  • Medical, dental, and vision insurance with employer contributions to Health Savings Accounts.
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses.
  • 401(k) retirement plan with employer match.
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks).
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees.
  • 13+ paid company holidays and multiple coordinated office closures throughout the year, plus paid sick or safe time.
  • Mental health and wellness support.
  • Employer-paid basic life and disability coverage.
  • Annual learning and development stipend.
  • Daily meals in offices and meal delivery credits as eligible.
  • Relocation support for eligible employees.
  • Additional taxable fringe benefits such as charitable donation matching and wellness stipends.

About OpenAI

OpenAI is an AI research and deployment company focused on ensuring general-purpose AI benefits all of humanity. The company emphasizes safety, diversity of perspectives, and provides reasonable accommodations to applicants with disabilities. Background checks will be administered in accordance with applicable law. Additional policies and applicant resources are linked in the posting.