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Full Stack Software Engineer for Codex Application

OpenAISan Francisco
On-site Full-time

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Experience Level

Experience

Qualifications

The ideal candidate will possess:Technical Skills: Proficiency in TypeScript and Node.js. Experience: Background in Electron or desktop application development. Integration Skills: Comfort with integrating native processes/services. Problem-Solving: Ability to approach IPC patterns and distributed systems thinking. Collaboration: Strong communication skills for working with cross-functional teams.

About the job

About Our Team

Join the innovative Codex App team at OpenAI, where we are dedicated to enhancing developers’ workflows through our desktop application and IDE extension. Our focus is on creating seamless product experiences with an emphasis on usability, performance, and reliability.

Our technology stack primarily consists of TypeScript, Node.js, and Electron, interfacing with external systems such as the Codex CLI and Rust-based app server. Crafting exceptional features involves designing clear boundaries between the user interface, local services, and native processes, ensuring the entire system is observable and resilient.

Your Role

We are seeking a Full Stack Software Engineer to help develop and enhance the systems that drive our Codex desktop application and IDE extension. In this role, you will manage workflows from the UI to the Node/TypeScript backend, coordinating with IPC/process orchestration and integrating with Rust services.

This position demands a product-oriented mindset. You will be instrumental in defining workflows, selecting appropriate abstractions, and delivering features that are both fast and reliable in real-world developer environments.

Key Responsibilities

  • Develop end-to-end features for the Electron application, encompassing both UI and backend layers using Node.js and TypeScript.

  • Create robust integrations with the Codex CLI and Rust app server, focusing on process lifecycle management, streaming output, and error handling.

  • Manage IPC architecture, including renderer/main boundaries, message schemas, and debugging methodologies.

  • Design systems for task orchestration, including long-running tasks, incremental updates, cancellations, retries, and state synchronization.

  • Enhance system reliability, observability, and performance through logging, tracing, metrics, profiling, and debugging tools.

  • Collaborate with design and product teams to translate ambiguous requirements into well-defined, deliverable workflows.

Ideal Candidate Profile

  • Strong foundation in TypeScript and Node.js, with a passion for managing product features from inception to deployment.

  • Experience with Electron or desktop application architecture, including understanding renderer/main separation and performance optimization.

  • Ability to integrate with native processes/services (e.g., Rust) and design clean, testable boundaries.

  • Familiarity with IPC patterns and a mindset geared towards distributed systems applied locally: message ordering, buffering, retries, and idempotency.

  • Enthusiasm for learning and adapting to new technologies and methodologies.

About OpenAI

OpenAI is a pioneering artificial intelligence research organization with a mission to ensure that artificial general intelligence (AGI) benefits all of humanity. Our Codex team is at the forefront of developing AI tools that empower developers and enhance productivity.

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