The Improbable Mafia
14 people came through Improbable and went on to found or lead other companies.
Chris DixonDirectorFounded a16z Speedrun +1Matej NovakSoftware EngineerFounded Assetario +2Brian HamiltonHead of Product, Enterprise Business UnitFounded Sandtable +1Filip StollárSoftware EngineerFounded Kontext +1Javier VillamizarBoard MemberFounded Open EnglishChris BattarbeeSoftware Engineering InternFounded MetoroDani PenevSoftware Engineering InternFounded SlickerIvan ValkovSoftware Engineering InternFounded SlickerJonathan van WerschSoftware EngineerFounded PhasesAnant KapoorSenior / Group Product ManagerFounded Guided EnergyPaddy LambrosTalent Acquisition LeadFounded DexCallum BrightingCustomer EngineerFounded NetspeakSetu ParimiSr Product Security ArchitectFounded RiskProfilerKeeley ErhardtSoftware EngineerFounded Strobe Power
Frequently asked questions
- What is the Improbable mafia?
- The Improbable mafia is the network of 14 people who came through Improbable and went on to found or lead other companies, including a16z Speedrun, Assetario, Sandtable, Kontext, Open English.
- Who is in the Improbable mafia?
- Notable members include Chris Dixon (a16z Speedrun), Matej Novak (Assetario), Brian Hamilton (Sandtable), Filip Stollár (Kontext), Javier Villamizar (Open English), Chris Battarbee (Metoro), Dani Penev (Slicker), Ivan Valkov (Slicker), among 14 tracked members.
- What companies did Improbable alumni found?
- Companies founded by Improbable alumni include a16z Speedrun, Assetario, Sandtable, Kontext, Open English, Metoro, Slicker, Phases, Guided Energy, Dex.











