Summer 2026 Full-Stack Engineer Intern

About Dex

The AI Coworker in Chrome

Tech

Existing approaches—like computer-use data and Model Context Protocols—still overlook a fundamental element: a deep understanding of how individuals actually use software. Every person navigates their workday with unique mental models and personal systems for interacting with platforms and staying organized. These invisible frameworks shape productivity and workflow in ways that generic data can’t capture. How can we systematically capture, structure, and teach these personal workflows to AI—enabling it to become a truly proactive, personalized extension of each user?

The role

# **Full-Stack Engineer Intern**We're looking for engineers who can turn research prototypes into production-ready systems. You'll work at the intersection of browser automation, agent infrastructure, and intuitive UX that make complex agent behavior understandable and controllable.Preferred: History of high-achieving projects/work experience, open source contributions, or competitive math/cs/physics experience.## **What You'll Do*** Full-stack browser extension interfaces based on research prototypes.* End-to-end features using React/Next.js, Python, and SQL.* Design intuitive interfaces for how users should delegate and override AI actions.* iMessage, communications channels, desktop-native, wearables integrations## **Requirements*** Strong foundation in React/Next.js and TypeScript.* Experience building and shipping complex web apps and/or browser extensions.* Familiarity with design systems like Figma * Preferred: Proof of meaningful open-source contribution.* Preferred: Strong UI/UX or design portfolio.## **Sample Projects*** Reusable tool call and output components for LLM-generated responses.* Building efficient indexing, search, and memory layer architecture.* Developing security and guardrails to approve and deny agent requests.* Integrating third-party platforms (e.g. Slack, Notion, Gmail) to enable workflows.