Fuyuki Matsubara
ML Engineer/ Entrepreneur
I love building products that reduce the entropy of the universe.
I was born in Japan, Kagawa Prefecture.
I've been building AI software for enterprises, startups, and my own company. I'm also Passionate about implementing the concept of "Maxwell's Demon" in real-world.
Outside of building & hacking, I enjoy breakdancing, practicing Street Fighter 6, and spending time with my family.
Jul. 2022 - Present
Founder & CEO/ML Engineer・Arrowheads, Inc.
Led development of BlitzMe from ideation to launch, leveraging user data to conduct joining-research with academic institution, validate core features. Scaled technical operations by recruiting and managing a cross-functional team of engineers, UX designers, and researchers, resulting in launch of BlitzMe with 10,000+ early adopters
Mar. 2021 - Jul. 2022
Equity Derivatives Trader・J.P. Morgan Securities Asia Pacific Limited
Focused on Japan single stock options market making for institutional clients. Automated 90% of the options market making operations by gathering unique dataset for non-listed options to train ML models.
Jun. 2019 - Mar. 2021
Hedge Fund Quant Analyst(Intern)・GCI Asset Management
Architected and deployed production-grade ML models for systematic trading, leveraging research in market microstructure and behavioral finance to generate consistent alpha across multiple asset classes
2019 - 2021
Master of Engineering / Machine Learning・The University of Tokyo
Majored in Machine Learning, focusing on research in applying deep learning to financial data. My master’s thesis was titled: "Stock Price Prediction Using Limit Order Book Data with Data Stratification and Multi-Phase Pre-training"
2014 - 2019
Bachelor of Interdisciplinary Science / Data Science・The University of Tokyo
Bboying
Flare
Personal Project
An AI Agent that builds a Flutter app from natural language, winning Best Flutter + Firebase Award @ Google AI Agent Hackathon 💙🔥
AI BUILDERS' COMMUNITY
KERNEL
Established with the aim of accelerating social implementation through chemical reactions produced by the fusion of developers' craftsmanship and researchers' scientific mindsets.
BlitzMe
Arrowheads, Inc.
BlitzMe is a social media platform that allows to like the content from the users' smile.
Smile to Like: Effects of Facial Expression-Based Evaluation on Media Engagement and Emotional Self-Awareness
(TOP10%)
ACM Symposium on Applied Perception (SAP2025)
Authors: Ryo Ohara, Fuyuki Matsubara and Takuji Narumi
BlitzMe: A Social Media Platform Combining Smile Recognition and Human Computation for Positive Mood Enhancement
(Best Demonstration Paper Award 👑)
The Twelfth AAAI Conference on Human Computation and Crowdsourcing (HCOMP2024)
Authors: Fuyuki Matsubara
Stock Price Prediction Using Limit Order Book Data with Data Stratification and Multi-Phase Pre-training
JSAI SIG-FIN 2021
Authors: Fuyuki Matsubara, Kiyoshi Izumi and Hiroki Sakaji
Analysis of Value and Momentum Factors in Japanese Government Bond and Stock Index Using Machine Learning
JSAI 2020
Authors: Fuyuki Matsubara, Kiyoshi Izumi, Hiroki Sakaji and Hiroyasu Matsushima
Human-Computer Interaction
Guest Lecturer at Kanto Gakuin University
Loosely coded in Cursor by yours trully with. Built with Next.js and TailWind CSS, deployed with and Vercel.