Thomas Dohmke
About Thomas Dohmke
Thomas Dohmke was born in East Berlin. He studied computer engineering at Technische Universität Berlin and later completed a PhD in mechanical engineering at the University of Glasgow. He co-founded HockeyApp, an app-testing startup, and served as its CEO. Microsoft acquired it in 2014.
At Microsoft he ran the team behind HockeyApp and Visual Studio App Center. He moved to GitHub when Microsoft closed its acquisition in 2018, became Chief Product Officer, and became GitHub CEO in November 2021. In August 2025 he announced he would leave GitHub at the end of the year to become a startup founder again.
In February 2026 he launched Entire, where he is CEO and co-founder. Entire builds developer tooling to make AI agent generated software auditable and reproducible. It raised a $60M seed round led by Felicis.
Crunchbase counts 20 investments, with no lead investments, no exits and no companies founded. Signal (NFX) lists him as an angel with 20 investments on record, and as a board member at Spice AI. Code Intelligence, a developer security startup, named him a new business angel in its $12M Series A announcement while he was GitHub CEO. Other investments on record include Doppler, CrabNebula, Shuttle and Tangled.
Crunchbase shows 11 AI investments since 2023. The AI portfolio includes Mem0, Raycast, Resolve.ai, Zaro, Etched, The Biological Computing, Atero, Dedalus Labs, Fastino Labs, Duranta and Polar.
On the Lounge deals desk, he appears in The Biological Computing's $25M Seed (March 2026) and Polar's $5.7M Seed (July 2026). Signal also records him in Mem0's Series A (October 2025), Dedalus Labs' Seed (October 2025), Duranta's Seed (July 2025) and Fastino Labs' Pre-Seed (November 2024).
His recorded deals are mostly pre-seed and seed, with some Series A rounds. They centre on developer tools, AI infrastructure and agent tooling. Signal ranks him in Developer Tools (Seed), Seattle/Portland Developer Tools (Pre-seed) and SMB Software. Tracxn lists his investments across the United States, the United Kingdom and other regions.
Signal lists an investment range of $5K to $50K with a $25K sweet spot. This comes from a third-party profile, not a statement from Dohmke. We found no public statement from him about what he looks for in a pitch.
- Mem0: AI memory layer for applications; Series A, October 2025.
- Resolve.ai: AI for software operations and incident response; seed round, October 2024, per Tracxn.
- Dedalus Labs: AI agent infrastructure; Seed, October 2025.
- Fastino Labs: AI model company; Pre-Seed, November 2024.
- The Biological Computing: Seed of $25M in early 2026.
- Polar: Seed of $5.7M, July 2026.
- Zaro: Pre-seed, June 2026, per Signal.
- Duranta: Seed, July 2025.
- Raycast, Etched, Atero: listed in his Crunchbase AI portfolio; dates not confirmed.
- crunchbase.com/person/a4a30661-4a7c-1ca7-25d1-3e3030de68c2
- crunchbase.com/person/thomas-dohmke
- linkedin.com/in/thomas-dohmke-24855b10
- signal.nfx.com/investors/thomas-dohmke
- tracxn.com/d/people/thomas-dohmke/__VGyt2_AuC0pTNvkMKSrCvWCCbr6RlNs18i
- en.wikipedia.org/wiki/Thomas_Dohmke
- cnbc.com/2021/11/03/microsoft-github-ceo-nat-friedman-replaced-by-thom
- neowin.net/news/github-ceo-thomas-dohmke-is-leaving-microsoft
AI portfolio
Investing activity
Thomas Dohmke has made 20 investments according to Crunchbase. 11 of those investments since 2023 were in AI companies, including Mem0, Raycast, Resolve.ai, Zaro and Etched.
Thomas Dohmke appears in 3 AI deals tracked by the Lounge deals desk, rounds totalling $25M. The rounds are mostly Seed and Pre-seed, with a median round size of $6M and the largest at $25M. The most recent are Polar (Seed, $5.7M, Jul 2026), Zaro (Pre-seed, $5.1M, Jun 2026) and The Biological Computing (Seed, $25M, Mar 2026).
Thomas Dohmke most often invests alongside Madrona, Phoebe Gates, Benjamin Spector and Robert Yang., and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Thomas Dohmke
Does Thomas Dohmke invest in AI startups?
Yes. Crunchbase shows 11 AI investments since 2023, including Mem0, Resolve.ai, Dedalus Labs, Fastino Labs and Polar.
What is Thomas Dohmke's angel check size?
He has not stated one publicly. Signal (NFX) lists a $5K to $50K range with a $25K sweet spot, which is a third-party estimate.
What stage does Thomas Dohmke invest in?
His recorded deals are mainly pre-seed and seed, plus some Series A rounds such as Mem0. Crunchbase shows no lead investments.
Who is Thomas Dohmke?
He is the former CEO of GitHub, serving from 2021 to 2025, and co-founded HockeyApp, which Microsoft acquired in 2014. He is now CEO and co-founder of Entire, based in Seattle.
What kind of founders does Thomas Dohmke back?
His investments lean toward developer tools, AI infrastructure and agent tooling. He also backs some other AI and deep tech startups, such as The Biological Computing.
How can founders reach Thomas Dohmke?
He is on LinkedIn and on X as @ashtom. We found no personal website or published pitch process.
Is Thomas Dohmke an angel investor?
Yes. Thomas Dohmke invests personally as an angel. Crunchbase counts 20 investments.
What AI companies has Thomas Dohmke invested in?
Thomas Dohmke's AI investments include Mem0, Raycast, Resolve.ai, Zaro, Etched, The Biological Computing, Atero and Dedalus Labs. The 3 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is Thomas Dohmke based?
Thomas Dohmke is based in Seattle, United States.
What stage does Thomas Dohmke invest at?
In the rounds tracked on Lounge, Thomas Dohmke has invested at Seed and Pre-seed, with a median round of $6M.