Wataru Konagai
Frontend Developer
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolWataru Konagai is a frontend developer based in Tokyo with 12 years of experience bridging telecom infrastructure and web engineering. He began his career building and maintaining VoIP and interconnection systems for major carriers, gaining deep expertise in SIP, ISUP signaling, UNIX/Linux administration, and SBC configuration before transitioning to web frontend work. Today he focuses on modern frontend stacks and community engagement as staff for the Angular Japan User Group, bringing protocol-level robustness and operational discipline to UI projects. Known for hands-on problem-solving—from simulated test-call debugging in carrier networks to shipping responsive web features—he blends low-level systems know-how with practical frontend engineering. His background makes him especially effective at integrating complex back-end services into reliable, user-facing interfaces.
12 years of coding experience
Takushoku University
Chinese
Github Skills (54)
javascript10
ngrx10
translation10
reactive10
typescript10
internationalization10
rxjs10
redux10
web-performance10
localization10
unidirectional-data-flow10
web-developer10
angular-cli10
observables10
state-management10
Programming languages (3)
Github contributions (5)
kasaharu/til
Aug 2019 - Nov 2022
Contributions:46 pushes, 1 branch in 3 years 3 months
kasaharu/settings
May 2015 - Feb 2021
Contributions:31 pushes in 5 years 9 months
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