Corgi illustration

Shunta Komatsu

小松 俊太

Engineering ManagerSoftware Engineer

Tokyo, Japan

I build the payment platform behind Mercari's marketplace as an Engineering Manager at Merpay, leading two payment-core teams while still shipping code. On the side I run engineering at Yomoyama (real-estate price estimation) and advise RINGBELL (a marriage agency service). Trained in image processing (MSc, Tokyo University of Science); off the clock I photograph Tokyo and follow a corgi around it.

Now
Merpay / EM + IC 2 teams · 10 engineers
Side
Yomoyama / CTO Real estate pricing
Side
RINGBELL / Advisor Marriage agency platform
Based
Tokyo, JP UTC+09:00 · ja/en

Experience

Full work history on LinkedIn

Mercari, Inc.

Engineering Manager

Mar 2025 — Present Current

Engineering Manager for two teams in Merpay — Payment Core (since Mar 2025) and Payment Solution (since Jan 2026) — leading 10 engineers in total. Also contributing as an individual contributor on the PCP Foundation team since Mar 2026.

Technical Lead

Jul 2024 — Mar 2025

Led technical development of Payment Platform in the Payment Core team.

Software Engineer

Apr 2022 — Jun 2024

Joined as a new graduate and worked on developing Payment Platform used company-wide.

RINGBELL, Inc.

Technical Advisor

Aug 2026 — Present Side

Advising on the architecture and development of a marriage agency service in Japan.

Senior Software Engineer

Jan 2026 — Jul 2026 Side

Main developer and architect of a marriage agency service in Japan.

Yomoyama, Inc.

Chief Technology Officer

May 2025 — Present Side

Leading full-stack development of a real estate price estimation service.

Senior Software Engineer

Jul 2024 — May 2025

Developed a real estate price estimation service.

Writing

Talks

Research

Passenger Flow Estimation with Bipartite Matching on Bus Surveillance Cameras

IEEE MIPR 2021 Apr 2021

Education

Master of Science in Computer Science

Tokyo University of Science Apr 2020 — Mar 2022

Focused on artificial intelligence and machine learning. Conducted research on image processing under Professor Yukinobu Taniguchi.

Bachelor of Science in Computer Science

Tokyo University of Science Apr 2016 — Mar 2020

Coursework in information engineering and statistics. Conducted research on image processing under Professor Yukinobu Taniguchi.

Awards

  • First Place, Yogen Kaigi #4

    2025

    Mercari, Inc. — Internal business contest

  • FT Tech PR Award 2025

    2025

    Awarded by Shunya Kimura, CTO of Mercari, Inc.

  • Best Presentation Award

    2022

    Art Science Forum

  • Full Exemption Scholarship

    2020 — 2022

    Japan Student Services Organization (JASSO)

More about me

Focus
Payment platform · AI-native teams · Small businesses
Interests
Go, Observability, FinTech, Payment Systems, Real Estate, Stocks
Outside work
Photographer · Corgi Lover
Born
Kanagawa, Japan
Based
Tokyo, Japan · 35.68°N 139.65°E
Languages
Japanese (native) · English (fluent)

Contact