Martijn Holleman
InvestorFounding Partner at DeBa Ventures · Investment Associate at NUNC Capital
Amsterdam Nieuw-West, North Holland, Netherlands
Find your path to Martijn
718 people in our graph share verified history with Martijn — schools, employers, funds. One of them is your warm intro.
Tianen LiangunlockedMartijn: together at PwC (2017)
×9Martijn: together at PwC
Martijn: together at University of Amsterdam
Martijn: together at Tilburg University
About
Martijn Holleman is Co-Founder and CEO of Donnerstag.ai, a finance automation software company backed by Speedinvest, QED Investors, and Crestone Venture Capital with €4.3M in seed funding. He previously co-founded iyzico in 2013 and served as its CEO until its acquisition by Naspers/PayU, later acting as Chairman through 2023, and held earlier roles including VP Sales Germany at Klarna. He is also a Founding Partner at DeBa Group and a board member at Endeavor Turkey.
Experience
- NUNC Capital BVInvestment Associatecurrent2025 — presentAmsterdam, North Holland, Netherlands
- Your.OnlineInvestment Associate2024 — 2025Amsterdam Area
- MKB FondsSenior Investment Associate2024Amsterdam Area
- MKB FondsInvestment Associate2023 — 2024Amsterdam Area
- MKB FondsJunior Investment Associate2022Amsterdam Area
- MKB FondsInvestment Analyst2021Amsterdam, North Holland, Netherlands
- PwC NederlandSenior Associate Deals2020 — 2021Amsterdam, North Holland, Netherlands
- PwC NederlandAssociate Deals2019 — 2020The Randstad, Netherlands
- PwC NederlandAssociate Assurance & Capital Markets and Accounting Advisory Services2017 — 2019The Randstad, Netherlands
- PwCIntern Audit & Assurance2017The Randstad, Netherlands
- Capitalmind - corporate finance advisoryCorporate Finance Intern2015 — 2016s-Hertogenbosch
- MAKTeam Member2013 — 2015Tilburg Area, Netherlands
- MAKCommittee Member Student for a Day2013Brabantine City Row
- MAKCommittee member Student introduction Days2013Tilburg University
- SpotOn-line WebdesignOwner2013 — 2014Brabantine City Row
- EnactusMember2013 — 2014Tilburg University
- tilburg university school of economics and managementChairman Eerstejaarscommissie Bedrijfseconomie2012 — 2013Brabantine City Row
- Tilburg University, School of Economics and ManagementSounding Board Business Economics2012 — 2013Brabantine City Row
- Politie Midden en West BrabantAssistant Tactical Detective2012 — 2013Etten-Leur
- Nederlandse Rugby BondMember of the Dutch national Rugby team U19.2010 — 2011The Randstad, Netherlands
- Nederlandse Rugby BondMember national selection U18 rugby, Netherlands2009 — 2010The Randstad, Netherlands
Skills & more
Equity ValuationFinancial ModelingMergers & Acquisitions (M&A)FinanceInvestment StrategiesCorporate AdvisoryFundingFinancial AnalysisSEO4Social Media4Social Networking2Online Marketing1
+12 more
Event ManagementInvestmentsPrivate EquityCorporate FinanceEnglishDutchCommunicationAnalytical SkillsMicrosoft OfficeWordPressPublic SpeakingTeamworkLanguages Dutch · English
- Registercontroller — VRC - Vereniging van Registercontrollers
- Python for Data Science and Machine Learning Bootcamp — Udemy
From Martijn's professional profile.
Colleagues at DeBa Ventures
Barbaros Ozbugutu
Founding Partner at DeBa Ventures
Barbaros Özbugutu
Founding Partner at DeBa Ventures
Baris Yilmaz
Expert at DeBa Ventures
Burcu Cilingir
Partner at DeBa Ventures
Burhan Eliacik
Expert at DeBa Ventures
Ilkay Duzgun
Partner at DeBa Ventures
Kilian Thalhammer
Expert at DeBa Ventures
Orkun Saitoglu
Expert at DeBa Ventures
Frequently asked questions
- Who is Martijn Holleman?
- Martijn Holleman is Co-Founder and CEO of Donnerstag.ai, a finance automation software company backed by Speedinvest, QED Investors, and Crestone Venture Capital with €4.3M in seed funding. He previously co-founded iyzico in 2013 and served as its CEO until its acquisition by Naspers/PayU, later acting as Chairman through 2023, and held earlier roles including VP Sales Germany at Klarna. He is also a Founding Partner at DeBa Group and a board member at Endeavor Turkey.
- Where does Martijn Holleman work?
- Martijn Holleman is Founding Partner at DeBa Ventures.
- Where did Martijn Holleman go to school?
- Martijn Holleman studied at University of Amsterdam (Executive Master, Executive Master of Finance & Control (EMFC)); University of Amsterdam (Postmaster Accountancy, Accounting); Tilburg University (Master Accountancy Professional RA/RC track).
Same school
Also attended University of Amsterdam294
Job van der VoortCo-founder & CEO of RemoteMartijn KleijwegtInvestor at LSP (Life Sciences Partners)René KuijtenInvestor at LSP (Life Sciences Partners)TorjusInvestor at InvestinorDamien van der BijlInvestment Director at Capricorn Venture PartnersAndrea van ElsasInvestor at Third Rock Ventures
+ 288 more
Also attended Tilburg University105
Patrick ClaessenPartner at Cottonwood Technology FundSanne van ErpInvestment manager at NoaberGianluca VitaleAssociate at PeakBridge VCMathijs van EschGeneral Partner at Maven 11Yu ChenAnalyst at The Spartan GroupStefan BaryGeneral Partner at Peak
+ 99 more
Also attended Victoria University of Wellington107
Helen SounessVenture Partner at RampersandDerek HandleyFuturist, entrepreneur, and student fascinated by what it means to live well in an increasingly chaotic worldIsabel VerheggenGlobal Head of Marketing, CV Labs at CV LabsRachel HindPrivate Client Adviser at Aura GroupCarolynChief Credit Officer at Terra Firma Capital CorporationKarin LouženskáCOO at Rockaway Ventures
+ 101 more
Also attended Avans University of Applied Sciences20
Luis LazagaInvestor Relations at Axon Partners GroupKoen den HoutingInvestment Manager at BOMFlo PattiwaelSenior Investment Associate at PhotonVenturesSjouke MulderTeamleider Investeren at NV NOMMaarten HeijmansManager Procurement Services at NPM Capital N.V.Ádám SzalaiPrincipal at PortfoLion Capital Partners
+ 14 more
Shared employers
Also worked at Your.Online2
Also worked at PwC Nederland8
Kasper de KockFinance & compliance manager at PeakJuliëtte DopJunior Investment Analyst at Holland CapitalIsabella FoxInvestment Director at ECI PartnersNicole ZomerhuisSenior Investment Manager at Karmijn KapitaalFrank EngelenManaging Partner and Co-CEO at JAB Holding CompanySebastiaan WolversManaging Director, Head of Finance & Tax at JAB Holding Company
+ 2 more
Also worked at PwC1,983
David PhuController at Felicis VenturesJen WangDeal Operations Manager at Felicis VenturesTianen LiangTax Controller at Felicis VenturesAryo TehranianManaging Director at Mayfair Equity PartnersAne Tolnes HaugdalInvestor at InvestinorEgilInvestor at Investinor
+ 1,977 more
Also worked at Enactus29
Irene KrijgsmanProgramma manager at NoaberMinjia WuPartner at Orbit StartupsOffiong IsyahInvestment Analyst, West Africa at MicrotractionPrabin SunarInvestor at Meridian Growth CapitalSaumeel PachigarPortfolio Manager at The First ThirtyVanshika BagrechaInvestor at RPSG Capital Ventures
+ 23 more