Kazuki Hamasaki
ソフトウェアエンジニア at Freelance
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKazuki Hamasaki is a software engineer based in Tokyo with 12 years of experience building cloud platforms and developer tooling. He spent seven years developing IIJ GIO, focusing on front-end interfaces and orchestration, and has strong expertise in CI/CD, Docker-based test environments, GitHub workflows, and chat-integrated developer platforms. As a freelancer since 2022 he continues to deliver full-stack solutions and maintain hands-on contributions to open-source projects like a JSONPath online evaluator where he improved the UI, editor integration, error handling, and social features. Comfortable bridging product-facing UX work and backend orchestration, he brings both polished front-end sensibilities and pragmatic infrastructure automation to cloud-native projects.
12 years of coding experience
8 years of employment as a software developer
Master, Information Science, Master, Information Science at Nara Institute of Science and Technologybachelor, Engneering, bachelor, Engneering at Kagoshima University
Japanese, English
Stackoverflow
524reputation
12kreached
2answers
0questions
Github Skills (17)
json10
javascript10
jsonpath10
ace-editor10
typescript9
typescript-types9
react9
typescripts9
html8
css8
ui-design8
bootstrap7
bootstra7
uiscrollview6
iphone6
Programming languages (9)
Github contributions (5)
ashphy/jsonpath-online-evaluator
Feb 2015 - Aug 2022
JSONPath Online Evaluator
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:3 releases, 2 reviews, 64 commits in 7 years 8 months
Contributions summary:Kazuki significantly contributed to the front-end development of the JSONPath Online Evaluator. Their work included implementing new UI features, such as the integration of an Ace editor for JSON and results, and adding social sharing buttons. They also focused on improving the user interface by fixing the design and addressing error handling within the application. Furthermore, the user was responsible for adding various enhancements such as implementing a "path" output mode, which shows the paths of the JSON elements that were found.
javascriptjsonpathjsonevaluator
ashphy/mastodon-birthday
Apr 2018 - Aug 2022
Happy Birthday!
Contributions:35 commits, 8 PRs, 33 pushes in 4 years 4 months
happyhappy-birthday
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