/People

Mike Arpaia

Investor

Managing Partner at Moonfire Ventures · Executive at Moonfire

United Kingdom

Writes $100K – $5M checks · typically $1.5M

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You →Saran · together at Government Office for Science (2022) →Mike

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You →Sam · 3 people · together at Kolide →Mike

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About

Listed as author of a Moonfire engineering article.

Contact· published on Mike's own website

Invests in

AI & Machine LearningClimate TechCybersecurityData & InfrastructureDeep Tech

Beyond investing

Founded
Co-founded Kolide. Created and open-sourced osquery while at Facebook in 2014.
Education
Completed a program at Johns Hopkins University (JHU) in February 2023.
Boards
Served as an AI Advisor to the UK Government Office for Science.
Communities
Was a guest lecturer at ETH, LBS, and UCL.
Awards
Completed avalanche training with the American Avalanche Association (A3) in January 2024 via Silverton Avalanche School in Ophir, CO. Completed Canadian Avalanche Association (CAA) certification in May 2023. Recertified with the National Outdoors Leadership School (NOLS) in May 2025 in Boulder, CO.
Hobbies
Spends time in the mountains with his family and has long-standing interests in wilderness medicine and avalanche operations. Maintains open-source software for biological engineering across data infrastructure, machine learning, robotics, and formal methods.
Family
Spends time in the mountains with his family.

From Mike's own website — common ground for a warm intro.

Executive at Moonfire

Intro paths

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In turn, Mike can intro founders to Moonfire's investors below.

Co-founders at Moonfire

MLMattias Ljungman
Mattias LjungmanFounder
HLHugo Lu
Hugo LuCEO
WD
Will DaviesCTO

Experience

  1. MoonfireManaging Partnercurrent2020 — presentLondon
  2. Government Office for ScienceArtificial Intellgence Advisor2022 — 2023United Kingdom
  3. WorkdayMachine Learning Architect2020Boulder, Colorado, United States
  4. WorkdayPrincipal Machine Learning Engineer2019 — 2020Boulder, Colorado, United States
  5. Mila - Quebec Artificial Intelligence InstituteMachine Learning Research Engineer2019 — 2020Montreal, Quebec, Canada
  6. KolideCo-Founder & CTO2016 — 2019Boulder, Colorado, United States
  7. MetaEngineering Manager2015 — 2016Menlo Park, California, United States
  8. MetaStaff Software Engineer (E6)2014 — 2015Menlo Park, California, United States
  9. EtsySenior Software Engineer2013 — 2014Brooklyn, New York, United States
  10. EtsySoftware Engineer2012 — 2013Brooklyn, New York, United States
  11. iSEC PartnersSecurity Engineer2011 — 2012New York, New York, United States
  12. Gotham Digital Science, a Stroz Friedberg companySecurity Engineer2011New York, New York, United States

Skills & more

Machine Learning

From Mike's professional profile.

Investments

Investor

Fleet Device ManagementLiveFlowTrickest

Per curated public sources.

Colleagues at Moonfire Ventures

Network2

Investors connected to Mike in public investor directories — a warm-intro map.

Frequently asked questions

Who is Mike Arpaia?
Listed as author of a Moonfire engineering article.
Where does Mike Arpaia work?
Mike Arpaia is Managing Partner at Moonfire Ventures.
What does Mike Arpaia invest in?
Mike Arpaia invests in AI & Machine Learning, Climate Tech, Cybersecurity, Data & Infrastructure, Deep Tech.
What check size does Mike Arpaia write?
Mike Arpaia typically writes checks of $100K – $5M.
What companies has Mike Arpaia invested in?
Investments tracked here include Fleet Device Management, LiveFlow, Trickest.
What awards has Mike Arpaia received?
Completed avalanche training with the American Avalanche Association (A3) in January 2024 via Silverton Avalanche School in Ophir, CO. Completed Canadian Avalanche Association (CAA) certification in May 2023. Recertified with the National Outdoors Leadership School (NOLS) in May 2025 in Boulder, CO.

Founder mafias

Shared employers