About
Ethan Pronev worked on trading systems at Jane Street and Citadel Securities, and is a computer science graduate from the University of Waterloo. He is co-founder of Approxima.
Founder at ApproximaYC W26
Intro paths
YC
Ethan went through Y Combinator (Winter 2026) β any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Diana Hu, General Partner at Y Combinator β the partner who ran Approxima's batch and knows the company first-hand. YC profile β
β
In turn, Ethan can intro founders to Approxima's investors below.
Approxima's investors Β· 1
Co-founders at Approxima
AS
Ashish SelvarajFounder
Experience
- Approxima (YC W26)Foundercurrent2025 β presentSan Francisco, CA
- Citadel SecuritiesSoftware Engineer Intern2024New York, New York, United States
- Jane StreetSoftware Engineer Intern2024New York, New York, United States
- Squarepoint CapitalSoftware Engineer Intern2022Montreal, Quebec, Canada
- BitGoSoftware Engineer Intern2022Palo Alto, California, United States
Frequently asked questions
- Who is Ethan Pronev?
- Ethan Pronev worked on trading systems at Jane Street and Citadel Securities, and is a computer science graduate from the University of Waterloo. He is co-founder of Approxima.
- Where does Ethan Pronev work?
- Ethan Pronev is Founder of Approxima.
- What companies did Ethan Pronev found?
- Ethan Pronev founded Approxima.
- Where did Ethan Pronev go to school?
- Ethan Pronev studied at University of Waterloo (Bachelor's degree, Computer Science (Co-op)); International Baccalaureate (Erindale Secondary School).
Founder mafias
Y Combinator mafia9,496
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University of Waterloo mafia261
Also came through, then founded or led a company.
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International Baccalaureate mafia32
Also came through, then founded or led a company.
Teddy JungreisInternational Baccalaureate Diploma Recipient at Winter Park High SchoolFounded WinibleRaymundo GonzalezIB DiplomaFounded EdenJJ TangSuzhou Singapore International SchoolFounded RootlySourav SanyalCOMPUTER SCIENCE - HLFounded AvairSenseMax KazakovFounded CoperniqJuan ChomaliMiddle Years Programme (MYP)Founded PoloTab
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BitGo mafia6
Also came through, then founded or led a company.
BitGo mafia6
Also came through, then founded or led a company.
Same school
Also attended University of Waterloo469
Chamath PalihapitiyaFounder & CEO of Social CapitalApoorva MehtaFounder of Instacart; founder of Cloud Health SystemsAchintya ChaudhariInvestor at LightbankKarim GillaniGeneral Partner at Luge CapitalRohan MongaInvestment Associate at Luge CapitalAndrew MiklasGeneral Partner at Y Combinator
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Also attended International Baccalaureate99
Jessica WangFP&A Manager at March Capital PartnersAlptugInvestment Team at Hummingbird VenturesConrad SchooInvestor at EQT VenturesMaximilian SamneInvestor at EQT VenturesDanny EdmanInvestor at Alpha PartnersHari GopalDirector of Corporate Insights at Tech Square Ventures
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Shared employers
Also worked at Approxima (YC W26)1
Also worked at Citadel Securities22
Alfred LinPartner at Sequoia CapitalKonstantine BuhlerInvestor at Sequoia CapitalRama SomayajulaHead of Trading at ParadigmJulia HitchinsInvestor at Positive Sum CapitalQingwen RenCofounder at Mulana CapitalVidur GuptaVice President at Frontenac
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Also worked at Jane Street56
Arvid LunnemarkFounder of Integrous Research; co-founder of CursorOlaoluwa OguneyeInvestor at Dorm RoomLeigh Marie BraswellPartner at KPCBSophia LuoPartner at Greylock PartnersChang XuPartner at Basis Set VenturesChris ClarkInvestor at FalconX Credit / Pareto Vault
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