Software Engineer, Codex App · OpenAI

Fri, 06 Mar 2026 18:27:31 GMT
Engineering

OpenAI · San Francisco, London, UK, Seattle · $230K – $385K • Offers Equity · hybrid

Software Engineer, Codex App

Location

San Francisco; London, UK; Seattle

Employment Type

Full time

Location Type

Hybrid

Department

Applied AI

Compensation

$230K – $385K • Offers Equity

The base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. If the role is non-exempt, overtime pay will be provided consistent with applicable laws. In addition to the salary range listed above, total compensation also includes generous equity, performance-related bonus(es) for eligible employees, and the following benefits.

Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts

Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)

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 paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time (1 hour per 30 hours worked, or more, as required by applicable state or local law)

Mental health and wellness support

Employer-paid basic life and disability coverage

Annual learning and development stipend to fuel your professional growth

Daily meals in our offices, and meal delivery credits as eligible

Relocation support for eligible employees

Additional taxable fringe benefits, such as charitable donation matching and wellness stipends, may also be provided.

More details about our benefits are available to candidates during the hiring process.

This role is at-will and OpenAI reserves the right to modify base pay and other compensation components at any time based on individual performance, team or company results, or market conditions.

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 abstractions, and ship features that feel fast and dependable in real developer environments.

What You’ll Do

Build end-to-end features across the Electron app (UI + Node/TypeScript backend layers).

Design robust integrations with the Codex CLI and app server (Rust), including process lifecycle, streaming output, and error handling.

Own IPC architecture and patterns (renderer/main boundaries, message schemas, backpressure, safety, debugging).

Build systems for orchestration: long-running tasks, incremental progress updates, cancellation, retries, and state synchronization.

Improve reliability, observability, and performance (logging/tracing/metrics, profiling, crash/debug tooling).

Partner with design and product to turn ambiguous needs into crisp, shippable workflows.

You Might Thrive Here If You

Have strong TypeScript/Node fundamentals and enjoy owning product features end-to-end.

Have experience with Electron or desktop app architecture (renderer/main separation, performance pitfalls, packaging/release concerns).

Are comfortable integrating with native processes/services (e.g., Rust) and designing clean, testable boundaries.

Know (or are excited to learn) IPC patterns and distributed-systems-like thinking applied locally: message ordering, buffering, backpressure, retries, idempotency.

Bring strong product judgment and enjoy iterating based on real usage and feedback.

Have experience with developer tools, CLIs, or IDE integrations (nice-to-have).

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.