Full-Stack Engineer Intern at Dex

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. Fullstack browser extension interfaces based on research prototypes. End-to-end features using React/Next.js, Python, and SQL. Beautiful and intuitive frontend systems. 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 or Framer. Preferred: Proof of meaningful open-source contribution. Preferred: Strong UI/UX or design portfolio. 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.