About Thirdlayer
Continual learning for enterprise AI. Backed by Y Combinator.
About the role
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 they're looking for
- 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
More about this role
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.
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