Masato Nakamura
代表取締役 at 株式会社シェリングフォード
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolMasato Nakamura is a software engineer and founder with 11 years of experience building reliable backend systems, currently serving as CEO of Sherringford. He has led teams and architecture efforts across startups and enterprises—designing microservices, core models, and job-queue architectures that significantly improved performance and scalability. His background includes SRE and solutions roles at Toreta, Box, and Cloudflare, where he bridged customer-facing solutions with robust engineering practices. An active contributor to the Ruby ecosystem, he has added and refactored spec tests for ruby/spec (notably the Date class), reflecting a focus on correctness and test automation. Trained with a Master of Engineering from the University of Tsukuba, he pairs academic rigor with hands-on releases and developer onboarding programs that accelerate team productivity.
11 years of coding experience
8 years of employment as a software developer
Master of Engineering - MEng, Graduate school of Systems and Information Engineering Department of Computer Science, Master of Engineering - MEng, Graduate school of Systems and Information Engineering Department of Computer Science at 筑波大学
Chinese
Github Skills (6)
testing10
spec10
test-suite10
ruby10
rubyspec9
mspec9
Programming languages (10)
Github contributions (5)
ruby/spec
Sep 2017 - Oct 2017
The Ruby Spec Suite aka ruby/spec
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:17 commits, 8 PRs, 2 comments in 27 days
Contributions summary:Masato primarily focused on adding and refactoring specification tests for the Ruby programming language, specifically for the `Date` class. Their contributions involved creating new test cases for methods like `next_day`, `next_month`, `prev_day`, and various date-related properties (`year`, `month`, `day`, and day of the week). This work ensured the correctness and reliability of the Ruby `Date` class implementation.
rubylanguage-specsmspecrubyspec
m-nakamura145/m-nakamura145.com
May 2018 - Nov 2022
Contributions:9 PRs, 38 pushes, 10 branches in 4 years 7 months
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