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Andrew Sy

InvestorFounder

CEO at Polymorph

San Francisco, California, United States

FoundedPolymorph · YC

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About

Andrew Sy previously worked at Meta and on machine learning infrastructure at Scale AI, which handled over 10 million calls daily. He is now building Polymorph.

CEO at PolymorphYC W26

Intro paths

YC

Andrew went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran Polymorph's batch and knows the company first-hand. YC profile ↗

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In turn, Andrew can intro founders to Polymorph's investors below.

Polymorph's investors · 8

Amino CapitalPalo Alto · $100K – $10M checksAndreessen HorowitzMenlo Park · $500K – $50M checksDorm RoomBrooklyn · $90K – $500K checksFounders FactoryLondon · $150K – $200K checksGeneral AdvanceTechstarsBoulder · $220K checksWefunderSan FranciscoY CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Polymorph

BG
brendon goFounder

Investments

Investor

Kita

Per curated public sources.

Frequently asked questions

Who is Andrew Sy?
Andrew Sy previously worked at Meta and on machine learning infrastructure at Scale AI, which handled over 10 million calls daily. He is now building Polymorph.
Where does Andrew Sy work?
Andrew Sy is CEO of Polymorph.
What companies did Andrew Sy found?
Andrew Sy founded Polymorph.
What companies has Andrew Sy invested in?
Investments tracked here include Kita.

Founder mafias

About this profile. Compiled from public sources — Polymorph'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