Full Stack Software Engineer, Codex App

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

Used Tools & Technologies

Not specified

Required Skills & Competences

TypeScript @ 3 Hiring @ 3 Rust @ 3 Debugging @ 3 Codex @ 3 Observability @ 3 AI @ 3 Profiling @ 3

Details

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.

Responsibilities

  • 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.

Requirements / Preferred Skills

  • Strong TypeScript and Node fundamentals; experience owning product features end-to-end.
  • Experience with Electron or desktop app architecture (renderer/main separation, performance pitfalls, packaging/release concerns).
  • Comfortable integrating with native processes/services (e.g., Rust) and designing clean, testable boundaries.
  • Knowledge of (or eagerness to learn) IPC patterns and distributed-systems-like thinking applied locally: message ordering, buffering, backpressure, retries, idempotency.
  • Strong product judgment and willingness to iterate based on real usage and feedback.
  • Experience with developer tools, CLIs, or IDE integrations is a 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. OpenAI is an equal opportunity employer and provides reasonable accommodations to applicants with disabilities.

Compensation & Benefits

  • Base salary range: $230,000 – $385,000 per year. Offers equity.
  • Base pay may vary depending on market location, job-related knowledge, skills, and experience.
  • In addition to base salary, total compensation may include equity and performance-related bonuses (for eligible employees).
  • Benefits include medical, dental, and vision; employer contributions to HSAs; pre-tax FSA and commuter accounts; 401(k) with employer match; paid parental and caregiver leave; paid time off and holidays; mental health and wellness support; employer-paid basic life and disability coverage; annual learning stipend; daily meals and meal credits in eligible offices.
  • Relocation support for eligible employees.