# Ruben Fiszel

> Ruben Fiszel is founder of Windmill. Windmill API + MCP on Anchor Terminal, with grades, an about and public profiles.

- Canonical: https://www.anchorterminal.com/people/ruben-fiszel/
- Markdown: https://www.anchorterminal.com/people/ruben-fiszel/index.md (~750 tokens)
- Slim: https://www.anchorterminal.com/people/ruben-fiszel/index.min.md (~580 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/people/ruben-fiszel/index.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

Founder, Windmill.

Ruben Fiszel founded Windmill, an open-source platform that turns scripts into internal apps and workflows, which joined Y Combinator in summer 2022. He earlier built distributed systems at Palantir, researched compilers at Stanford and ran engineering at a multi-party computation startup.

- LinkedIn: https://www.linkedin.com/in/rubenfiszel/

## What Ruben builds

- [Windmill API + MCP](https://www.anchorterminal.com/tools/windmill.md), graded C, 56/100, in Workflow automation. Code-first engine for scripts, flows and internal apps in 20+ languages, written in Rust, on Windmill Cloud or self-hosted. Founder, Windmill, researched 2026-10-28.

## Backed by

- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)
- [Gradient Ventures](https://www.anchorterminal.com/investors/gradient-ventures/)
- [Bessemer Venture Partners](https://www.anchorterminal.com/investors/bessemer-venture-partners/)

## Questions

### Who is Ruben Fiszel?

Ruben Fiszel founded Windmill, an open-source platform that turns scripts into internal apps and workflows, which joined Y Combinator in summer 2022. He earlier built distributed systems at Palantir, researched compilers at Stanford and ran engineering at a multi-party computation startup.

### What does Windmill Labs make?

Anchor Terminal lists Windmill API + MCP from Windmill Labs. Code-first engine for scripts, flows and internal apps in 20+ languages, written in Rust, on Windmill Cloud or self-hosted.

### Who has invested in Windmill Labs?

The sources our research read name Y Combinator, Gradient Ventures and Bessemer Venture Partners.

### How are Ruben's tools graded?

Windmill API + MCP is graded C, 56 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.windmill.dev/
- https://www.ycombinator.com/companies/windmill

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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