# Romain Sestier (slim)

> Romain Sestier is co-founder and CEO. StackOne on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/romain-sestier/index.md (~1,050 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/people/romain-sestier/index.json · canonical https://www.anchorterminal.com/people/romain-sestier/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Co-founder and CEO.

Romain Sestier is co-founder and CEO of StackOne, whose tool gateway connects AI agents to business systems under permissions set by IT.

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

## What Romain builds

- [StackOne](https://www.anchorterminal.com/tools/stackone.md), graded B, 69.2/100, in Agent tool access. StackOne is a hosted gateway from StackOne Technologies Limited that gives AI agents actions across more than 540 business apps over MCP, SDKs, A2A or HTTP, with managed authentication, per-user grants, policies and logs. Co-founder and CEO, researched 2026-10-27.

## Works with

- [Guillaume Lebedel](https://www.anchorterminal.com/people/guillaume-lebedel/), Co-founder and CTO

## Backed by

- [GV](https://www.anchorterminal.com/investors/gv/)
- [Workday](https://www.anchorterminal.com/investors/workday/)
- [XTX Ventures](https://www.anchorterminal.com/investors/xtx-ventures/)
- [Episode 1](https://www.anchorterminal.com/investors/episode-1/)
- [Playfair Capital](https://www.anchorterminal.com/investors/playfair-capital/)
- [Portfolio Ventures](https://www.anchorterminal.com/investors/portfolio-ventures/)
- [Revenue Syndicate](https://www.anchorterminal.com/investors/revenue-syndicate/)
- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)
- [Blissgrowth](https://www.anchorterminal.com/investors/blissgrowth/)
- [Charlie Songhurst](https://www.anchorterminal.com/investors/charlie-songhurst/)

## Questions

### Who is Romain Sestier?

Romain Sestier is co-founder and CEO of StackOne, whose tool gateway connects AI agents to business systems under permissions set by IT.

### What does StackOne Technologies Limited make?

Anchor Terminal lists StackOne from StackOne Technologies Limited.

### Who has invested in StackOne Technologies Limited?

The sources our research read name GV, Workday, XTX Ventures, Episode 1, Playfair Capital, Portfolio Ventures, Revenue Syndicate, Sequoia Capital, Blissgrowth and Charlie Songhurst.

### How are Romain's tools graded?

StackOne is graded B, 69.2 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.stackone.com/company/
- https://www.linkedin.com/in/romainsestier/
- https://uk.linkedin.com/in/guillaumelebedel
- https://www.stackone.com/
- https://www.stackone.com/contact/

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.