About Me

Basic Information

Name: Shunta Komatsu (he/him)
Birthplace: Kanagawa, Japan
Residence: Tokyo, Japan
Languages: Japanese (native), English (fluent)
Interests: Go, Vim, observability, fintech, payment systems, real estate, and stocks

Current Position: Software Engineer at Mercari, Inc. (April 2022 - Present)
- Tech Lead since Jul 2024
- Developing microservices for the payment platform used by the entire Mercari Group
Side Position: Software Enginner at ISOGE! (July 2024 - Present)
- Developing real estate price estimation service “ISOGE!”
Previous Positions:
- See LinkedIn for more details

Graduate School: Tokyo University of Science, M.S. in Computer Science
- Focused on artificial intelligence and machine learning
- Conducted research on image processing under Professor Yukinobu Taniguchi
Undergraduate School: Tokyo University of Science, B.S. in Computer Science
- Coursework in information engineering and statistics
- Conducted research on image processing under Professor Yukinobu Taniguchi

Professional Presentations:
- Go Conference mini 2023 Winter IN KYOTO: “The Future of encoding/json” (slides)
- mercari.go #24 - GopherCon 2023 Recap: “Recap: Automatically Instrument Your Go Source Code with Orchestrion” (slides)
- Go 1.21.1 Release Party & GopherCon 2023 Recap: “Recap: The Future of JSON in Go” (slides)
Academic Presentations:
- IEEE International Conference on Multimedia Information Processing and Retrieval (MIPR) 2021: “Passenger Flow Estimation with Bipartite Matching on Bus Surveillance Cameras”

Tech Blog Posts:
- “決済基盤の Observability を向上するための Datadog Dashboard の進化” - Mercari Engineering Blog (post)
- “メルペイ決済基盤における Source Payment による決済手段の抽象化” - Mercari Engineering Blog (post)

Projects:
- Contributor to github.com/cloudspannerecosystem/yo
- Contributor to github.com/Lightning-AI/pytorch-lightning