Jan Geldmacher
InvestorVenture Partner at Impact Venture Capital
New York, New York
Writes $500K – $2.5M checks · typically $1.5M
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You →Lars · together at Emnify (2022–2026) →Jan
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You →Jamie · 2 people · together at Cornami →Jan
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Experience
- CIVCGeneral Partnercurrent2021 — presentSacramento, CA
- Deutsche GigaNetz GmbHChairman Of The Board Of Administrationcurrent2020 — presentHamburg, Hamburg, Germany
- EMnifyMember of the Board of Directorscurrent2022 — presentBerlin, Germany
- Gabriel Advisors, LLCManaging Directorcurrent2025 — present
- InfinadeckMember Board Of Directorscurrent2021 — presentRocklin, California, United States
- Movius Corp.Operating Advisorcurrent2021 — presentNew York, United States
- Cornami, Inc.CEO and Chairmancurrent2026 — presentCampbell, CA
- Cornami, Inc.Board Member2019 — 2026Campbell, CA
- LiveOak FiberChairperson2022 — 2026Brunswick, GA
- INTILION GmbHMitglied des Aufsichtsrats2022 — 2026Paderborn, North Rhine-Westphalia, Germany
- TelenorMember of the Board of Directors2023 — 2025Oslo, Oslo, Norway
- Reliance Communications, Orbic North AmericaHead Of Strategy2021 — 2023New York, United States
- Skylo TechnologiesMember Board Of Directors2021 — 2023
- Boston DynamicsMember Board Of Directors2021 — 2022Waltham, Massachusetts, United States
- SoftBank Group InternationalOperating Partner2020 — 2021New York City Metropolitan Area
- SprintPresident, Sprint Business2017 — 2020Greater New York City Area
- SprintPresident Enterprise2016 — 2017Overland Park, Kansas
- Vodafone Global EnterpriseCEO2012 — 2016
- VodafoneDirector of Enterprise Business Unit2008 — 2012
- BT GermanyCEO2005 — 2008
- T-Systems InternationalManaging Director Telecommunications Services and International Network Infrastructure2001 — 2004Frankfurt am Main, Hesse, Germany
- Deutsche TelekomSenior Vice President International Network Infrastructure2000 — 2001Bonn, North Rhine-Westphalia, Germany
Skills & more
+3 more
WirelessManaged ServicesGo-to-market Strategy- Hauptgespraech 128, Baden-Badener Unternehmergespraeche e.V. (BBUG) — Baden-Badener Unternehmer Gespräche e.V. (BBUG)
From Jan's professional profile.
Deals · 2
InfinadeckBoard seat
via Impact Venture Capital · filed Oct 2025 · $1.5M raise
CornamiBoard seat
via Impact Venture Capital · filed Aug 2025 · $40M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Impact Venture Capital
Network2
Investors connected to Jan in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Jan Geldmacher?
- Venture Partner at Impact Venture Capital
- Where does Jan Geldmacher work?
- Jan Geldmacher is Venture Partner at Impact Venture Capital.
- What check size does Jan Geldmacher write?
- Jan Geldmacher typically writes checks of $500K – $2.5M.
- What boards does Jan Geldmacher sit on?
- Jan Geldmacher holds tracked board seats at Cornami, Infinadeck.
- Where did Jan Geldmacher go to school?
- Jan Geldmacher studied at University of Cologne.
Founder mafias
University of Cologne mafia36
Also came through, then founded or led a company.
Boston Dynamics mafia5
Also came through, then founded or led a company.
T Systems mafia4
Also came through, then founded or led a company.
Movius mafia3
Also came through, then founded or led a company.
Impact Venture Capital mafia2
Also came through, then founded or led a company.
Same school
Also attended University of Cologne117
+ 111 more
Shared employers
Also worked at Cornami, Inc.4
Also worked at Sprint79
+ 73 more
Also worked at Vodafone Global Enterprise8
+ 2 more
Also worked at Vodafone175
+ 169 more





























































