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Andrew Sy

Founder

Founder at Polymorph

San Francisco, California, United States

FoundedPolymorph · YC

Find your path to Andrew

927 people in our graph share verified history with Andrew — schools, employers, funds. One of them is your warm intro.

Mike VolpiunlockedAndrew: together at Scale AI (2021–2023)
Andrew: together at Uber
×5Andrew: together at Scale AI
×5Andrew: together at Y Combinator

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.

Founder 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 · 1

Y CombinatorSan Francisco · $500K checks · since 2026

Experience

  1. Polymorph (YC W26)Co-founder, CEOcurrent2026 — presentSan Francisco Bay Area
  2. Opal SecurityTech Lead / NY Site Lead2023 — 2026New York, New York, United States
  3. Scale AIMachine Learning Infrastructure Engineer2021 — 2023San Francisco, California, United States
  4. MetaSoftware Engineer2019 — 2021Menlo Park, CA
  5. Palantir TechnologiesSoftware Engineering Intern2018Palo Alto, California, United States
  6. MetaSoftware Engineering Intern2018Menlo Park, California, United States
  7. IntuitSoftware Engineer Co-op2017
  8. UberData Science Intern2017

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 Founder of Polymorph.
What companies did Andrew Sy found?
Andrew Sy founded Polymorph.
Where did Andrew Sy go to school?
Andrew Sy studied at Y Combinator; Northeastern University (Bachelor’s Degree, Computer Science and Mathematics); Xavier School.

Founder mafias

Same school

Shared employers