About 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.
About Thirdlayer
Continual learning for enterprise AI
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Job details
Salary
$6,000 - $10,000
Location
San Francisco, CA
What happens next.
No applications, no recruiter spam. Just the intro.
Confirm the fit
A few questions to make sure this role is the right shape for you. Two minutes.
I pitch you to the company
I write the intro, send it to the founder, and handle the back-and-forth.
A meeting lands on your calendar
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.