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About
White-hat hacker who met Olivier Beg as a teenager; co-founded Hadrian to automate offensive security at scale.
Co-Founder & CEO at Hadrian
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In turn, Rogier can intro founders to Hadrian's investors below.
Hadrian's investors · 15
137 VenturesSan Francisco · since 20261789 CapitalPalm Beach · since 2026Altimeter CapitalMenlo Park · $1M – $25M checks · since 2026Andreessen HorowitzMenlo Park · $500K – $50M checks · since 2026Apollosince 2026Baillie GiffordEdinburgh · since 2026CapitalGSan Francisco · $75M – $100M checks · since 2026Construct CapitalWashington · $2M – $6M checks · since 2026CyLon VenturesWitneyFounders FundSan Francisco · $500K – $5M checks · since 2026Lux CapitalNew York · $100K – $100M checks · since 2026PICUS CAPITALMunich · $100K – $5M checksT. Rowe PriceBaltimore · since 2026Valor Equity PartnersChicago · since 2026Washington Harbour PartnersArlington · since 2026
Co-founders at Hadrian
OB
Olivier BegCo-Founder & Chief Hacking Officer
MC
Maurice ClinCo-Founder & Head of Business Development
TV
Tijl van VlietCo-Founder
Frequently asked questions
- Who is Rogier Fischer?
- White-hat hacker who met Olivier Beg as a teenager; co-founded Hadrian to automate offensive security at scale.
- Where does Rogier Fischer work?
- Rogier Fischer is Co-Founder & CEO of Hadrian.
- What companies did Rogier Fischer found?
- Rogier Fischer founded Hadrian.
Founder mafias
London Business School mafia269
Also came through, then founded or led a company.
Delft University of Technology mafia122
Also came through, then founded or led a company.
Sebastian ThrunHonorary DoctorateFounded Waymo +3Eric MigicovskyIndustrial Design EngineeringFounded Beeper +1Menno GravemakerElectrical EngineeringFounded Momo Medical Group +1David Oort AlonsoBachelor of Science - BSFounded Bloom +1Sirian MaathuisBachelor of Science - BScFounded Bloom +1Kayra BahadirBScFounded Prestige +1
About this profile. Compiled from public sources — Hadrian's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights