Freelance Engineer / WorldSkills Expert / Co‑FounderBased in Tokyo, Japan
Full-stack Engineer
Freelance Full-stack Engineer specializing in a wide range of Web development fields, including Web application development across frontend and backend and cloud infrastructure using AWS and Google Cloud. Served as Tech Lead for over 14 new Web service developments.
Education and Talent Development
Competed in WorldSkills 2015 as a representative of Japan. Served as a Technical Expert in competition management at the 2022 South Korea, 2024 France, and 2026 Shanghai competitions, and nurtures the next generation of engineers through judging and task creation at competitions in Japan, as well as talks at schools and events.
Book Author
'React Textbook for Never Giving Up: Learning Web Development by Building' (SB Creative) to be published in 2026.
Developed an AI agent platform that provides predefined AI agents with distinct personas and skills. When an agent is added through the admin interface, a Hermes Agent based on its configuration launches as a container on Amazon Elastic Container Service (Amazon ECS). Customers can interact with each agent through Slack and LINE.
Technologies: Hermes Agent, Amazon ECS, Stripe, OpenRouter, Terraform, PostgreSQL, and Next.js for both frontend and backend.
Lead Engineer / 2026
Sales Dashboard
Developed a dashboard service that retrieves and processes 8 GB or more of sales-log data daily over SFTP, making sales activity visible.
Technologies: AWS Lambda, Amazon Simple Storage Service (Amazon S3), Amazon Elastic Compute Cloud (Amazon EC2), PostgreSQL, AWS Cloud Development Kit (AWS CDK), Next.js for the frontend, and Go for the backend.
Book Author / 2026
Authored Book: 'React Textbook for Never Giving Up: Learning Web Development by Building'
Co-authored an introductory book on React explaining from basics to practical application development. Published by SB Creative.
WorldSkills Expert / 2025
WorldSkillsAsia 2025 Taiwan
Served as an expert (judge) for the 'Web Technologies' trade at the competition in Taiwan.
Judge / 2025
National Skills Competition
Served as Judge and Task Creator (6th).
Judge / 2025
National Skills Competition for Young Workers
Served as Judge and Task Creator (8th).
Lead Engineer / 2024
Sightseeing Tour Service
Participated as a technical advisor and tech lead. Responsible for backend, frontend, and infrastructure.
Lead Engineer / 2024
Interview Proxy Service
Responsible for backend and infrastructure construction as a tech lead.
Lead Engineer / 2024
Welfare Misuse Prevention Service
Tech lead for new development using Nuxt3/Google Cloud.
WorldSkills Expert / 2024
WorldSkills 2024 Lyon
Served as an expert (judge) for the 'Web Technologies' trade at the world competition in France.
Lead Engineer / 2023
Fitness Gym Reservation App
Backend tech lead for a reservation management system using ReactNative/NestJS.
Speaker / 2023
Educational Lectures
Lectures on technology and career at high schools in Iwate and Miyagi prefectures. Conducted for over 200 students.
Other / 2023
Crowdfunding for Artist Support
Executed and achieved a crowdfunding campaign goal for artist support.
App Development / 2022
Online Hobby Learning Service
Frontend development using Flutter and technical support for the team. Responsible for performance improvements as the user base grew and new feature implementation.
WorldSkills Expert / 2022
WorldSkills 2022 Korea
Served as a judge and technical trainer for the Japanese representative at the decentralized world competition.
Organizational Development / 2022
Creative Team Organizational Improvement
Led organizational improvement and technical support for a creative team within a 4,000-person group.
App Development / 2021
Cosmetic Brand CMS Development
Developed a CMS site using Next.js as a Frontend Engineer.
Lead Engineer / 2020
Scoring Service (LINE Mini App)
Served as Lead Engineer for backend development using NestJS/Google Cloud and team management.
Lead Engineer / 2019
Proprietary CMS V2 (Automotive)
Served as Lead Engineer for the admin panel using Vue.js for design, implementation, and management.
Lead Engineer / 2018
Proprietary CMS V1 (Automotive)
Served as Lead Engineer for the admin panel using AngularJS for design, implementation, and management.
Media / 2017
Featured in 'Web Designing' Magazine
Featured in 'Web Designing', a specialized magazine for web production.
Speaker / 2017
Lecture at a Commercial High School in Okinawa
Delivered a lecture on career and technology to approximately 90 students at a high school in Okinawa.
Media / 2015
Featured in Kahoku Shimpo
Featured in Kahoku Shimpo, a major newspaper in the Tohoku region, regarding achievements in the WorldSkills competition.
Awards / 2015
WorldSkills 2015 (São Paulo)
Competed as the Japanese representative in the 'Web Design' trade and was awarded the Medallion for Excellence.
