Justin Zeefe
InvestorFounderGeneral Partner at Green Flag · Board director at Swarmer · Co-Founder at Nisos
Los Angeles Metropolitan Area
FoundedNisos
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133 people in our graph share verified history with Justin — schools, employers, funds. One of them is your warm intro.
About
Founder and operator with deep defense experience.
Board director at Swarmer
Intro paths
In turn, Justin can intro founders to Swarmer's investors below.
Swarmer's investors · 2
Co-founders at Swarmer
Co-Founder at Nisos
Intro paths
In turn, Justin can intro founders to Nisos's investors below.
Nisos's investors · 2
Co-founders at Nisos
Experience
- Green Flag VenturesFounding Partnercurrent2022 — presentLos Angeles, California, United States
- SwarmerBoard Member (NASDAQ: SWMR)current2025 — present
- SwarmerSeed (and Series A) Investorcurrent2024 — present
- NisosCo-Founder & Board Member (CEO ‘15-‘20)current2015 — present
- MaXon SystemsSeed Investorcurrent2026 — present
- BaBayte OÜSeed Investor (Lead)current2026 — present
- Falcons, LLCSeed Investor (Lead)current2025 — present
- TELETACTICASeed Investorcurrent2025 — present
- HIMERASeed Investorcurrent2024 — present
- Kara Dag TechnologiesSeed Investor (Lead)current2024 — present
- AstraNavSeed Investorcurrent2023 — presentUnited States
- European Defense Investor NetworkMembercurrent2023 — presentEurope
- Anduril IndustriesInvestor (SERIES D) [EXITED POSITION]2021 — 2025
- U.S. GovernmentOperations Officer2004 — 2014Worldwide (Including multiple warzone deployments and overseas postings)
- Bethesda-Chevy Chase Rescue SquadEmergency Medical Technician (Volunteer)2003 — 2008Bethesda, MD
- Williams & Connolly LLPAttorney2002 — 2004Washington DC-Baltimore Area
Skills & more
+12 more
UkraineManaged IntelligenceVenture CapitalFundraisingTeam BuildingProfitable GrowthEnterprise Risk ManagementGovernment LawContract NegotiationsMilitary LawGovernment ContractsGovernment ProcurementLanguages English · German
- Emergency Medical Technician — District of Columbia, DOH
- Member of the Bar (INACTIVE) — District of Columbia
From Justin's professional profile.
Deals · 7
SwarmerBoard seat
via Green Flag · filed Oct 2025 · $19.7M raise
HimeraSolo GP
via Green Flag
TeletacticaSolo GP
via Green Flag
BabayteSolo GP
via Green Flag
FalconsSolo GP
via Green Flag
Kara Dag TechnologiesSolo GP
via Green Flag
MaXon SystemsSolo GP
via Green Flag
Attribution from SEC filings, press coverage, and firm rosters. Some rows are inferred. Not right? Tell us.
Colleagues at Green Flag
Frequently asked questions
- Who is Justin Zeefe?
- Founder and operator with deep defense experience.
- Where does Justin Zeefe work?
- Justin Zeefe is Co-Founder of Nisos and General Partner at Green Flag and Board director at Swarmer.
- What companies did Justin Zeefe found?
- Justin Zeefe founded Nisos.
- What boards does Justin Zeefe sit on?
- Justin Zeefe holds tracked board seats at Swarmer.
- Where did Justin Zeefe go to school?
- Justin Zeefe studied at Boston University School of Law (J.D., International Law); The Ohio State University (B.A. (Honors College of Arts & Sciences), Political Science).
Founder mafias
The Ohio State University mafia107
Also came through, then founded or led a company.
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Anduril mafia15
Also came through, then founded or led a company.
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Boston University School of Law mafia7
Also came through, then founded or led a company.
Astranav mafia2
Also came through, then founded or led a company.
Swarmer mafia2
Also came through, then founded or led a company.
Same school
Also attended Boston University School of Law41
+ 35 more
Also attended The Ohio State University214
+ 208 more
Shared employers
Also worked at Swarmer5
Also worked at HIMERA1
Also worked at Anduril Industries43
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+ 37 more