Max Nussenbaum
InvestorFounderVenture Partner at Pioneer · Founder/CEO at Castle
Brooklyn, New York
Writes $200K – $300K checks · typically $250K
FoundedCastle · YCCastle · YC
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Ask Garry Tan to introduce you to Max
You →Garry · together at YC W16 (2016) →Max
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You →Jamie · 11 people · together at YC W16 →Max
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Founder/CEO at CastleYC W16
Intro paths
Max went through Y Combinator (Winter 2016) — any YC alum in your network can reach them through the YC community.
In turn, Max can intro founders to Castle's investors below.
Castle's investors · 7
Co-founders at Castle

Colleagues at Pioneer
Frequently asked questions
- Who is Max Nussenbaum?
- Venture Partner at Pioneer
- Where does Max Nussenbaum work?
- Max Nussenbaum is Founder/CEO of Castle and Venture Partner at Pioneer.
- What check size does Max Nussenbaum write?
- Max Nussenbaum typically writes checks of $200K – $300K.
- What companies did Max Nussenbaum found?
- Max Nussenbaum founded Castle, Castle.
Founder mafias
Y Combinator mafia10,619
Also came through, then founded or led a company.
Pioneer mafia78
Also came through, then founded or led a company.
Castle mafia4
Also came through, then founded or led a company.
Castle mafia3
Also came through, then founded or led a company.











