About
Joon Won Song worked as a quantitative developer at Squarepoint Capital and studied electrical engineering and computer science at Imperial College London.
Co-Founder, CEO at InstinctYC W26
Intro paths
YC
Joon 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 Instinct's batch and knows the company first-hand. YC profile β
β
In turn, Joon can intro founders to Instinct's investors below.
Instinct's investors Β· 2
Co-founders at Instinct
EM
Eunju MoonCo-Founder, CTO
Experience
- Instinct (YC W26)Co-Foundercurrent2026 β presentSan Francisco
- SquarepointQuant Developer2025Greater London
- λΌμ΄μ¨ννΈ μ€νλμ€C++ SWE Internship2024South Korea
Skills & more
TCP/IPUDPNetworkPythonStatisticsSignal ProcessingControl SystemCUDAC++μμ§λμ΄λ§λ¨Έμ λ¬λκ΅μ‘
+3 more
리μμΉμ λ΅λ¦¬λμ- Fundamentals of Accelerated Computing with CUDA C/C++ β NVIDIA
From Joon's professional profile.
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 Co-Founder, CEO of Instinct.
- What companies did Joon Won Song found?
- Joon Won Song founded Instinct.
- Where did Joon Won Song go to school?
- Joon Won Song studied at Y Combinator (W26); Imperial College London (BEng, EECS); Chadwick International School (International Baccalaureate Diploma).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3
+ 4,709 more
Imperial College London mafia196
Also came through, then founded or led a company.
Brent HobermanAdvisor, Innovation FundFounded Founders Pledge +3Nessan BerminghamDoctor of Philosophy - PhDFounded Korro Bio +2Alice BentinckComputer Science Department Industrial Liaison BoardFounded Entrepreneurs First +1Ahmed DeyabMSc Advanced Computational Methods for AeronauticsFounded Instagram +1Sebastian TrousilPhDFounded City Therapeutics +1Slava SolonitsynMBAFounded No Cap +1
+ 189 more
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital
+ 1,994 more
