Mike Arpaia
Security/infrastructure engineer best known for creating osquery at Facebook; co-founded Kolide before joining Moonfire in 2020 as Managing Partner running the firm's AI and data-technology strategy.
Mike Arpaia is a security and infrastructure engineer who created osquery -- GitHub's most-starred security project -- while an engineering manager on Facebook's intrusion-detection team. He was previously a security engineer at Etsy, iSEC Partners, and Gotham Digital Science, then co-founded and served as CTO of Kolide (2016-2019), followed by machine-learning roles at Mila (Quebec AI Institute) and Workday. He joined Moonfire Ventures in 2020 as Managing Partner, architecting the firm's data/ML systems used across its investment process; the firm has raised over $175M across three funds during his tenure. He has also served as an AI Advisor to the UK Government Office for Science (2022-2023) and guest-lectured on tech/AI investing at London Business School, UCL, and ETH Zurich.
Overview
- Role
- Managing Partner, Moonfire Ventures
- Based in
- London, UK (remote)
- Prior experience
- Kolide (co-founder & CTO; 2016-2019), Workday (ML Architect), Mila - Quebec AI Institute (ML Research Engineer), Facebook (Engineering Manager; created osquery), Etsy (Senior Software Engineer; security), iSEC Partners, Gotham Digital Science
- www.linkedin.com/in/marpaia
- Website
- www.arpaia.io
Companies0
No linked records yet.
Affiliated funds1
Frequently asked
- Who is Mike Arpaia?
- Mike Arpaia is a security and infrastructure engineer who created osquery -- GitHub's most-starred security project -- while an engineering manager on Facebook's intrusion-detection team. He was previously a security engineer at Etsy, iSEC Partners, and Gotham Digital Science, then co-founded and served as CTO of Kolide (2016-2019), followed by machine-learning roles at Mila (Quebec AI Institute) and Workday. He joined Moonfire Ventures in 2020 as Managing Partner, architecting the firm's data/ML systems used across its investment process; the firm has raised over $175M across three funds during his tenure. He has also served as an AI Advisor to the UK Government Office for Science (2022-2023) and guest-lectured on tech/AI investing at London Business School, UCL, and ETH Zurich.
- What is Mike Arpaia's role?
- Mike Arpaia is Managing Partner, Moonfire Ventures, based in London, UK (remote).
- Where did Mike Arpaia work before?
- Mike Arpaia's prior roles include Kolide (co-founder & CTO; 2016-2019), Workday (ML Architect), Mila - Quebec AI Institute (ML Research Engineer), Facebook (Engineering Manager; created osquery), Etsy (Senior Software Engineer; security), iSEC Partners, Gotham Digital Science.
Sources & citations3
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
Full career history: Etsy, iSEC Partners, GDS, Facebook (osquery), Mila, Workday, Kolide co-founder/CTO, Moonfire Managing Partner since 2020, UK GOS AI Advisor
arpaia.io (self-published CV): Mike Arpaia — CVVerified2026-08-15 - 2
- 3
osquery is the most-starred security project on GitHub, created at Facebook
GitHub: osquery/osqueryReported2026-08-15