The Block Mafia
17 people came through Block and went on to found or lead other companies.
Jack DorseyCo-founder & CEOFounded SquareKanishk ParasharTBD Strategic Development DirectorFounded Powder +1Thomson NguyenHead of Capital Data ScienceFounded Framed DataCesar AlanizHead of Compliance Engineering and TechnologyFounded UserfoxDouwe OsingaGoose OSS leadFounded NeptyneJack AmadeoSoftware EngineerFounded NeptyneAndrew HoskinsEngineeringFounded UpfrontTim JangSoftware Engineer InternFounded OpensteerNick MolnarAfterpay Co-Founder and Afterpay Co-Lead at BlockFounded AfterpayMichael NealePrincipal Engineering - Applied AIFounded CloudBeesMartin DrashkovSenior Software Engineer, Cash App Credit RiskFounded BarSenseCan SarLead, AI Coding & Velocity - BlockFounded Value VotingWenjing YuEngineering leaderFounded BentocartCarlos Horno SantacruzSr Product Manager at Square - Afterpay | Fintech 🦄Founded DealcarSergio Guisado VillanuevaDirector Of EngineeringFounded DealcarKhalil LinProduct Compliance Manager - CashApp/TBDFounded AllScaleSimone GarreauGlobal Head of Enterprise RiskFounded Prism Layer AI
Frequently asked questions
- What is the Block mafia?
- The Block mafia is the network of 17 people who came through Block and went on to found or lead other companies, including Square, Powder, Framed Data, Userfox, Neptyne.
- Who is in the Block mafia?
- Notable members include Jack Dorsey (Square), Kanishk Parashar (Powder), Thomson Nguyen (Framed Data), Cesar Alaniz (Userfox), Douwe Osinga (Neptyne), Jack Amadeo (Neptyne), Andrew Hoskins (Upfront), Tim Jang (Opensteer), among 17 tracked members.
- What companies did Block alumni found?
- Companies founded by Block alumni include Square, Powder, Framed Data, Userfox, Neptyne, Upfront, Opensteer, Afterpay, CloudBees, BarSense.














