Sr. Full Stack Developer

TEKsystems

Contractor Computer Occupations
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Location
West Menlo Park, California, United States
Posted
July 08, 2026

Job Description

Description

As a Sr. macOS / Full-Stack Developer, you'll be joining this client as they begin building the production prototype of a Computer Use Agent (CUA) — think Codex-style assistant that lives on macOS, observes user activity, and can take actions like typing, navigating websites, and operating apps on the user's behalf.

Responsibilities:

* Build the macOS assistant prototype end-to-end

* Develop the front-end / UI layer using React and JavaScript

* Design and manage Docker environments for the prototype and its dependencies

* Integrate the prototype with the underlying CUA models

* Iterate quickly on prototype features based on research team feedback

* Troubleshoot and debug across the stack

* Document architecture and setup

* Collaborate with research scientists, engineers, and TPMs

Skills

MacOS Development, Docker, React, Javascript, Desktop Application Development, Prototype Development,...