Yasui Tsutomu
代表社員 at 合同会社やっとむ屋
Japan
Summary
👤
Senior🎓
Top SchoolYasui Tsutomu is an independent Agile coach and former longtime consultant with 13+ years of hands-on experience introducing Agile and XP practices across engineering teams and organizations in Japan. He combines technical fluency—coding in Python, Java, Ruby and advocating practical TDD—with a strong emphasis on gemba coaching alongside engineers, product owners and management. Known for designing and delivering game-based workshops (e.g., Kanban Game, Agile Treasure Hunt, Psychological Safety Game), he uses playful simulations to teach complex topics and drive culture change. A published author and translator on agile and testing topics, he tailors seminars, trainings and coaching programs to embed new ideas into real-world teams. Fluent in Japanese and proficient in English (TOEIC 985), he operates as a self-employed coach and external Agile advisor while maintaining client engagements and coaching roles.
14 years of coding experience
Master's degree, Computer Engineering, AI, Master's degree, Computer Engineering, AI at The University of Electro-Communications
Japanese, English
Stackoverflow
13reputation
10kreached
0answers
1question
Github Skills (24)
nodejs9
react9
pythonista8
benchmarking8
typescript8
tdd7
python7
galaxy6
android6
testing4
pytest3
phaser3
rendering3
video-chat3
java2
Programming languages (6)
Github contributions (5)
asobann/asobann_app
Apr 2020 - Nov 2022
online card / board game platform
Contributions:3 reviews, 646 commits, 11 PRs in 2 years 6 months
reactnodejsplatform-gametypescriptboard-game
yattom/timtam
Dec 2025 - Jun 2026
Contributions:18 reviews, 63 PRs, 204 pushes in 6 months
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