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Thirdlayer

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. ## What You'll Build * Fullstack browser extension interfaces based on research prototypes. * End-to-end features using React/Next.js, Python, and SQL. * Beautiful and intuitive frontend systems. ## 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 or Framer. * 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.

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