# Tony Holdstock-Brown

> Tony Holdstock-Brown is the co-founder and CEO of Inngest, a San Francisco developer platform that gives engineers a durable, observable execution layer for background jobs, workflows, and AI agents. A self-described tinkerer since age 10 and former Docker engineer, he started Inngest in 2021 with CTO Dan Farrelly after the two met in a New York co-working space. The company has raised roughly $31.6M, including a $21M Series A led by Altimeter in 2025, on the thesis that in an AI era the real moat is how fast a team can iterate.

- **Role:** Co-founder and CEO at Inngest
- **Organizations:** Inngest, Uniform Teeth, Docker
- **Nationality:** British
- **Education:** King Edward VI Grammar School
- **Known for:** Co-founded and leads Inngest, a developer platform for durable workflows and AI agents., Raised approximately $31.6M in venture funding, including a $21M Series A led by Altimeter., Attracted backing from a16z, Kleiner Perkins, Notable Capital, and angels including GitHub co-founder Tom Preston-Werner, Vercel CEO Guillermo Rauch, and dbt Labs founder Tristan Handy.

## Career timeline

- **2015** — Joined Docker as a senior engineer, working on developer tooling and infrastructure.
- **2017** — Left Docker after roughly two years building container tooling.
- **2018** — Became Head of Engineering at Uniform Teeth.
- **2021** — Co-founded Inngest with Dan Farrelly after meeting in a New York co-working space.
- **2024** — Inngest raised a $6.1M seed round to expand its workflow engine.
- **2025** — Inngest raised a $21M Series A led by Altimeter, bringing total funding to about $31.6M.

## Achievements

- Co-founded and leads Inngest, a developer platform for durable workflows and AI agents.
- Raised approximately $31.6M in venture funding, including a $21M Series A led by Altimeter.
- Attracted backing from a16z, Kleiner Perkins, Notable Capital, and angels including GitHub co-founder Tom Preston-Werner, Vercel CEO Guillermo Rauch, and dbt Labs founder Tristan Handy.
- Grew the open-source Inngest project to 5.6k+ GitHub stars, with SDKs in TypeScript, Python, and Go.
- Built Inngest into a platform used in production by teams including SoundCloud and Day.ai.

## Latest updates

- **2025-09** — Inngest closed a $21M Series A led by Altimeter Capital, with participation from a16z, Notable Capital, Afore, and Guillermo Rauch.
- **2025** — Repositioned Inngest as the observable execution layer for AI agents and workflows, expanding agent-specific observability and SDK support.

## Links

- Website: https://www.inngest.com
- LinkedIn: http://www.linkedin.com/in/tonyhb
- Twitter/X: https://twitter.com/itstonyhb
- GitHub: https://github.com/tonyhb

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Profile page: https://yespress.io/tony-holdstock-brown
Published by YesPress — https://yespress.io
Last updated: 2026-07-24