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About
Joon Won Song worked as a quantitative developer at Squarepoint Capital and studied electrical engineering and computer science at Imperial College London.
CEO at InstinctYC W26
Intro paths
Joon went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran Instinct's batch and knows the company first-hand. YC profile ↗
In turn, Joon can intro founders to Instinct's investors below.
Instinct's investors · 6
Co-founders at Instinct
Frequently asked questions
- Who is Joon Won Song?
- Joon Won Song worked as a quantitative developer at Squarepoint Capital and studied electrical engineering and computer science at Imperial College London.
- Where does Joon Won Song work?
- Joon Won Song is CEO of Instinct.
- What companies did Joon Won Song found?
- Joon Won Song founded Instinct.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Imperial College London mafia463
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Instinct'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