Software engineer with strong expertise in frontend and backend development, specializing in JavaScript, TypeScript, and Node.js. Proven track record in developing and maintaining high-performance applications and tools. Experienced in working with cross-functional teams in both Japanese and English environments. Demonstrated leadership in frontend development for LIFF SDK, with a commitment to contributing to open-source software.
Led frontend development for LIFF SDK. Designed and implemented new APIs, improved security practices, and contributed to open-source projects. Worked in bilingual environment with technical documentation in English.
Led frontend development for LIFF SDK
Implemented and open-sourced LIFF CLI tool
Designed LIFF Plugin for auto-filling user information
Migrated LINE Login frontend from Vue.js v2 to v3
Introduced SAST tools and security improvements
Led the renewal/redesign of a QA application
Served as an interviewer for mid-career recruitment, conducting initial screening interviews
Responsible for onboarding and supporting new team members
Backend development for electric vehicle charging service. Developed APIs, created documentation, and built tools for improving developer experience with TypeScript and SendGrid integration.
Developed notification system for EV charging completion
Created and deployed sendgrid-type-gen tool for the team
Backend development for fensi fan economy platform and EXILE/LDH mobile services. Worked on architecture design, performance tuning, and security improvements across multiple projects.
Designed and developed live streaming functionality using AWS Chime
Implemented authentication and EC system features
Performed vulnerability remediation and infrastructure maintenance
Collaborated with cross-functional teams on native applications
