# Dave Sifry

> Dave Sifry is an American software entrepreneur and engineer who founded Technorati, co-founded Linuxcare and Sputnik, and founded Offbeat Guides. Based in San Francisco, he has held executive roles at Lyft, Reddit, Interana and the Anti-Defamation League, and currently leads Warmstart while publishing tools for AI software development.

- **Role:** Founder and CEO at Warmstart
- **Organizations:** Technorati, Linuxcare, Sputnik, Offbeat Guides, Interana, Lyft, Reddit, Anti-Defamation League, Sifry Consulting, Warmstart, Questy, Linux International
- **From:** Long Island, New York, United States
- **Nationality:** American
- **Education:** BS in Computer Science, Johns Hopkins University
- **Known for:** Founded Technorati, which reported tracking over 70 million blogs in April 2007., Co-founded Linuxcare and Sputnik., Named a World Economic Forum Technology Pioneer in 2007.

## Career timeline

- **1968** — Born on Long Island, New York; exact date not established.
- **1991** — Graduated from Johns Hopkins University with a computer science degree.
- **1994** — Returned from work at Mitsubishi Electric in Kobe, Japan.
- **1998** — Co-founded Linuxcare.
- **2001-2003** — Founder and CTO of Sputnik, according to his public CV.
- **2002-11** — Announced Technorati on November 27; his 2007 interview dates the operating company to May 2003.
- **2007-08** — Stepped down as Technorati CEO and moved to a board role.
- **2008** — Launched Offbeat Guides; public CV dates the venture to 2007-2012.
- **2012** — Offbeat Guides sold to Look, Buy Fly Travel, according to his CV.
- **2016-2017** — VP Engineering at Interana.
- **2017-2018** — VP Product and Engineering at Lyft.
- **2018** — VP Revenue Products at Reddit.
- **2019-2022** — VP of the Anti-Defamation League Center for Technology and Society.
- **2021-10** — Testified at a US Senate hearing on social media amplification.
- **2024** — Founded Warmstart.
- **2026** — Published open source AI coding tools and a code-review evaluation.

## Achievements

- Founded Technorati, which reported tracking over 70 million blogs in April 2007.
- Co-founded Linuxcare and Sputnik.
- Named a World Economic Forum Technology Pioneer in 2007.
- Founded personalized travel guide business Offbeat Guides.
- Led product and engineering work at Lyft, including Transit research and prototyping.
- Testified before the US Senate Homeland Security and Governmental Affairs Committee on October 28, 2021.
- Created the open source metaswarm framework for AI coding agents.

## Latest updates

- **2026-10** — Featured presenting at Vibe House SF; described as running Warmstart and visiting the house regularly.
- **2026-09** — Published Vibes vs. Evidence, an AI code-review evaluation with methods, limitations and public data.
- **2026-08** — Discussed AI coding workflows with Axel Molist in Building in the Age of AI.
- **2026-01** — Discussed Warmstart and reconnecting professional networks on Multiply Your Success.

## Links

- Website: https://www.sifry.com/
- LinkedIn: https://www.linkedin.com/in/dsifry/
- Twitter/X: https://twitter.com/dsifry
- GitHub: https://github.com/dsifry
- Facebook: https://www.facebook.com/dsifry

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Profile page: https://yespress.io/dave-sifry
Published by YesPress — https://yespress.io
Last updated: 2026-10-25