Rintaro Masuda
ソフトウェアエンジニア at 株式会社HQ（HQ Inc.）
Yokohama, Japan
Summary
👤
Senior🎓
Top SchoolRintaro Masuda is a seasoned software engineer based in Yokohama with over 20 years of experience spanning product development, test engineering, data science, and management across both large enterprises and smaller teams. He has driven data-driven transformations at Microsoft—designing KPIs, rebuilding pipelines, and applying machine learning to improve Windows touch keyboard stability and tablet usage—while also shipping core input features and modernizing IME dictionary pipelines. Comfortable across the full stack, Rintaro has implemented backend protocols, ERP salary-calculation systems, and automated large-scale test frameworks, often stepping into hands-on roles as a playing manager. He excels at collaborating with geographically and culturally distributed teams and is known for turning limited data or resources into actionable insights that reduce user friction. A pragmatic problem-solver, he blends deep technical craftsmanship with a track record of operational improvements and team enablement.
10 years of coding experience
21 years of employment as a software developer
Bachelor's Degree, Computer Science, Bachelor's Degree, Computer Science at Chuo University
Japanese, English, Spanish
Github Skills (14)
windows-sdk8
cognitive-services8
type-system6
speech-to-text6
typescript6
nbitcoin6
bitcoin6
csharp6
dotnet5
dotnet-core4
r-package4
data-analysis3
r3
dockerfile2
Programming languages (2)
Github contributions (5)
rintaromasuda/bleaguebydata
Oct 2018 - Jun 2022
Data analysis on the Japanese pro basketball league
Contributions:110 commits, 2 PRs, 153 pushes in 3 years 8 months
data-analysis
rintaromasuda/bleaguer
Dec 2018 - Jun 2022
Data and utility functions for Japan professional basketball (B.LEAGUE) data.
Contributions:104 commits, 73 PRs, 108 pushes in 3 years 6 months
utility-functionsprofessionaldataleaguebasketball
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