Fundraising Fox

Marek Olszewski

Investor

Advisor at Flori Ventures

Germany

Writes $25K – $100K checks · typically $50K

About

Co-founder of Celo and partner at cLabs.

Experience

  1. SelfCo-Foundercurrent2025 — present
  2. cLabsCo-Founder & CEOcurrent2017 — presentSan Francisco Bay Area
  3. ValoraCo-Founder & President2021 — 2024
  4. GoDaddyVP of Engineering2013 — 2017
  5. Locu, Inc.Co-Founder & CTO2010 — 2013
  6. MITResearch Assistant2007 — 2012
  7. Microsoft (Research)Research Intern2010
  8. Sun Microsystems (Labs)Research Intern2009
  9. Sun Microsystems (Labs)Research Intern2008
  10. GoogleIntern Software Engineer2007
  11. University of TorontoResearch Assistant2005 — 2007
  12. MicrosoftIntern Software Development Engineer2005
  13. MicrosoftIntern Software Development Engineer2004

Education

  1. Massachusetts Institute of TechnologyPhD, ABD2007 — 2012
  2. University of TorontoMASc, Computer Engineering2005 — 2007
  3. University of TorontoBASc, Computer Engineering2001 — 2005

Skills & more

Start-upsEntrepreneurshipSoftware EngineeringWeb DevelopmentParallel ComputingLinuxCC++PythonJavaScriptHTMLCSS
+12 morejQueryDjangoDistributed SystemsAlgorithmsBinary TranslationHypervisorTransactional MemoryDeterministic MultithreadingScalabilityTechnical RecruitingEngineering ManagementTeam Building

Languages English · French · Polish

From Marek's professional profile.

Colleagues at Flori Ventures

Barb Izzo
Advisor at Flori Ventures
Maria Alegre
Managing Partner at Flori Ventures
Rene Reinsberg
Advisor at Flori Ventures
Roni Gur
Partner at Flori Ventures
Ryan Nesbitt
General Partner at Flori Ventures
Sebastian Buenaventura
Senior Associate at Flori Ventures
Sep Kamvar
Advisor at Flori Ventures
Tomer Bariach
General Partner at Flori Ventures

Network1

Calvin LiuScout
Partner at Divergence

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

Frequently asked questions

Where does Marek Olszewski work?
Marek Olszewski is Advisor at Flori Ventures.
What check size does Marek Olszewski write?
Marek Olszewski typically writes checks of $25K – $100K.

Same school

Also attended Massachusetts Institute of Technology1,281

Fred WilsonCo-founder & Partner at Union Square VenturesElad GilSolo general partner investing through Gil CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesHemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and Techstars

+ 1,275 more

Also attended University of Toronto322

Yasmin RazaviInvestor at Spark CapitalImran BashirFounding Partner, Chief Operating Officer at Extreme Venture PartnersKarim GillaniGeneral Partner at Luge CapitalAndrew MiklasGeneral Partner at Y CombinatorMike MontanoInvestor at True VenturesAlex KolicichInvestment Team at 8VC

+ 316 more

Shared employers

Also worked at Self1

Rene ReinsbergAdvisor at Flori Ventures

Also worked at Locu, Inc.2

Nitesh BantaCo-founder and Advisor at Rough Draft VenturesVinay TrivediInvestor at General Atlantic

Also worked at MIT443

Aileen LeeFounder & Managing Partner of Cowboy VenturesMatt HuangCo-founder and Managing Partner at ParadigmScott BillerInvestor at GV (Google Ventures)Noubar AfeyanInvestor at Flagship PioneeringVyas RamananVenture Partner at Third Rock VenturesRhie LimPartner, Global Strategy at One Way Ventures

+ 437 more

Also worked at Microsoft (Research)1,070

Reid HoffmanCo-founder of LinkedIn; Partner at GreylockGarry TanPresident & CEO of Y CombinatorNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGKai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIJavier SolteroSenior Venture Partner at Felicis VenturesViviana FagaGeneral Partner at Felicis Ventures

+ 1,064 more