Resume

Founded a software development company; works as both PM and engineer across multiple concurrent projects.

• Feature development and operation of a major newspaper's digital English media (Next.js / Laravel / Terraform)
• Long-term development of systems for municipalities and enterprises, including a regional voucher platform
• Introduced AI-driven development such as automated PR review with Claude Code and E2E automation with Playwright
• End-to-end ownership from requirements and client negotiation to release and operations

Worked as a freelance software engineer on multiple web development projects.

• Built G Suite single sign-on (SAML) for an HR automation SaaS
• Migrated an online print ordering system from Symfony / Agavi to Laravel
• Developed a hospital–care facility matching system

Developed and maintained enterprise web applications.

• MVNO business system: from requirements definition through system testing
• Development of a marketing automation platform and a mobile SDK

Started career working on Java-based business systems.

• Design and testing of a legal record-matching system
• Development and testing of carrier pre-installed mobile apps

Full-stack feature development, bug fixes, and operation of a digital English-language news media platform.

• Upgraded Next.js / Laravel; built CMS preview and continuous audio playback UI
• Launched AI-generated audio; introduced automated PR review with Claude Code (GitHub Actions)
• Automated E2E testing with Playwright; maintained unit tests with Jest / PHPUnit
• Infrastructure work with Terraform / CloudFront / S3 and production releases via GitHub Actions

Developed two client projects in parallel, fully remote.

• Drag & drop component UI with dnd-kit and react-table pagination
• SMS sending requests and delivery-status retrieval
• S3 upload for PDF / Word / Excel files with a GPT-powered chat answering from file contents

Long-term development of an API, admin console, and mobile app covering voucher issuance, purchase, merchant settlement, and bank approval.

• API design based on clean architecture and the Repository pattern
• Mobile app work in React Native; frontend development with Next.js / React
• Provisioned EC2 / RDS / VPC with Terraform; testing with Dusk / PHPUnit
• CSV / Excel import & export with Laravel-Excel

Migration to a renewed site plus ongoing feature development.

• Server setup, Docker dev environment, and automated deployment with GitHub Actions
• User-to-user chat feature built with clean architecture

Backend (API) development for a SaaS covering employee records, org charts, HR operations, and workflow approvals.

• Built G Suite single sign-on (SAML) from scratch
• Improved CSV import / export and email notification features

Improved two Laravel projects (frontend and API), mainly around the order cart and My Page.

• Migrated legacy Symfony / Agavi code to Laravel
• Implemented per-ASP logic and view separation

A system matching discharged patients with care facilities, plus improvements to a care facility landing page.

• Laravel batch commands and migrations for a database migration
• Slack notifications for landing page inquiries
• Competitor crawler using Treasure Data and Elasticsearch

Worked on the online form backend, the scenario feature frontend, and a mobile SDK.

• Built and tested a mobile SDK with Firebase push notifications
• Shipped an app implementing the SDK

A business system for manufacturers, agencies, and end users to apply for and review contracts.

• Authored requirements, basic design, and detailed design documents
• Handled test design through unit, integration, and system testing

Testing for a business system handling contract applications and inquiries.

• Test design and unit / integration / system testing
• Reviews for an offshore development team

Smartphone apps for e-books, data top-up, and more.

• Authored screen flow diagrams and message list documents
• Test design / execution and Redmine ticket fixes

Development of a legal record name-matching (entity resolution) system.

• Authored basic and detailed design documents
• Test design and unit / integration / system testing

Built file uploaders, BBS, CMS, and more from scratch with the MVC pattern, mainly in Java.

• End-to-end experience from requirements to detailed design and implementation
• Earned OCJP Silver during the training period