Demo

Software Engineer (Founding Team)

mcp-use (YC S25)
San Francisco, CA Full Time
POSTED ON 12/30/2025
AVAILABLE BEFORE 1/28/2026
TL;DR

mcp-use is building open-source dev tools and infrastructure for MCP to help dev teams quickly build and deploy custom AI agents with MCP servers. \ Think of Vercel, but oss and vertical on MCP (Model Context Protocol). \ mcp-use SDK is one of the most popular MCP libraries with 8,000 stars on GitHub and 3,000,000 downloads. \ Used by 20% of US 500 like NASA, SAP, NVIDIA and more than 5,000 companies.

What you will own

  • Build the best dev tools for MCP development.
  • Develop the best platform to build and deploy MCP servers and agents.
  • Improve and expand the features of the mcp-use SDKs.

What We’re Looking For

We want people with high agency, smart, and passionate about how LLMs interact with external systems via MCP.

  • Must be smarter than the founders.
  • Understanding about LLMs and MCP.
  • Excellent software engineering skills. You are a great hacker.
  • You make good stuff. You have good taste.
  • Speed of execution. Startups move quickly.
  • You have watched Silicon Valley (optional).

The role requires being in-person at our office in Zurich traveling with us when we go to SF. We do not offer remote work options.

What You Are Getting

  • You're setting the foundation.
  • Direct impact on 200,000 developers building with mcp-use.
  • Work directly with founders and shape the company's technical strategy.
  • Good compensation equity in a rocket ship.
  • Hacker house in the best part of Zurich long periods in SF.

Salary : $100,000 - $135,000

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