Kenji Koshikawa
Engineering Manager at Treasure Data
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKenji Koshikawa is an Engineering Manager based in Tokyo with 10+ years in software and 15+ years across the industry, known for taking products from 0-to-1 and scaling them into reliable, enterprise-grade services. He blends hands-on engineering (cloud-native microservices, serverless, and blockchain experiments) with disciplined delivery practices—using velocity and capacity metrics, runbooks, and incident response to improve reliability and predictability. At Treasure Data he built and led distributed teams delivering marketing automation and Data Clean Room capabilities, negotiating technical architecture with external partners and hiring the backend founding team. Prior roles include leading a scheduling product to market‑leading adoption on the Zoom Marketplace and building an officially recognized Ruby SDK, reflecting a knack for integration-heavy, partner-driven products. He’s passionate about mentoring engineers to Staff-level impact and formalizing career ladders, and he brings an uncommon mix of startup founding-engineer grit and enterprise operational maturity.
10 years of coding experience
13 years of employment as a software developer
Graduate School of Information Systems, Department of Social Intelligence and Informatics, Graduate School of Information Systems, Department of Social Intelligence and Informatics at The University of Electro-CommunicationsFaculty of Science and Technology, Department of Industrial Administration, Faculty of Science and Technology, Department of Industrial Administration at Tokyo University of Science
Github Skills (56)
client-library10
omniauth10
calendly10
ruby-client10
mailgun10
api-client9
continuous-testing9
continuous-integration9
ruby9
instagram-graph-api9
api9
health8
blockchain8
bitcoin8
cryptocurrency8
Programming languages (5)
Github contributions (5)
koshilife/calendly-api-ruby-client
Aug 2020 - Nov 2022
A Ruby client library for accessing Calendly v2 APIs
Contributions:23 releases, 152 commits, 54 PRs in 2 years 3 months
api-clientapiclient-libraryruby-clientruby
koshilife/timetree-api-ruby-client
Jun 2020 - Nov 2020
A Ruby client library for accessing TimeTree APIs
Contributions:15 releases, 76 commits, 43 PRs in 5 months
api-clientapitimetreeclient-libraryruby-client
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.