Works

Our Work

Full System Renewal of a Waste Management Cloud Service for ECOS Co., Ltd.

A complete renewal of a large-scale waste management cloud service used at more than 3,000 sites of 200 companies. Rebuilt on a modern technology stack for greatly improved scalability and maintainability.

2025.09System RenewalCloud ServiceUI/UX DesignInfrastructure

Nationwide Store and Certified Technician Data Management System for the Japan Glasses Association

Built a system to manage certified technicians and stores nationwide following the launch of the national "Eyeglass Making Technician" certification. Implemented API integration with the association's internal system, careful UX design for its user base, and an algorithm to normalize inconsistent notations.

2023.02 - PresentSystem DevelopmentAPIUX Design

Development Support for a Cloud Call Center System for COLLABOS Corporation

A fully remote technical support project for COLLABOS Corporation (TSE: 3908), a developer and provider of cloud-based call center systems.

2022.07 - 2024.03System DevelopmentCloudTechnical Support

Reducing Database Load for the "Tokyo Afterschool Summoners" App by LifeWonders

Technical support to strengthen and harden the backend of "Tokyo Afterschool Summoners," a hugely popular LGBT-oriented mobile game with 60,000 followers on X that is still going strong more than 10 years after release.

2022.02AWSBackendPerformance Tuning

Front-End Coding of a Landing Page for DeNA SOMPO Carlife

A project to code designs created by a design team on a front-end JavaScript framework, faithfully and carefully reproducing designs crafted down to the pixel.

2020.11, 2021.04Front-endLPPixel Perfect

DX App that Automatically Records and Shares Student Attendance for National Institute of Technology, Oyama College

Co-developed an in-house system for Oyama College, known for its robot contest achievements. QR code-based attendance management and automation significantly reduced the workload of faculty and staff.

2021.03 - PresentFlutterDXApp Development

Complete Backend Renewal Supporting Furusato Nozei (Hometown Tax) for Kamishihoro Town, Hokkaido

A complete renewal of the system supporting Kamishihoro Town, Hokkaido, which has successfully revitalized the region using Furusato Nozei (hometown tax donations) as a funding source. The management system handles an enormous volume of donation data.

2021.03 - PresentSystem RenewalBackendPerformance Optimization

Japanese Sword Auction System for Global Users for Aoi Art

A project to build, on WordPress, an auction system for global users operated by Aoi Art, a renowned Japanese sword dealer in Yoyogi, Tokyo.

2020.09 - PresentWordPressWooCommerceAuction System

Administrative Document Generation System for the Japan Association of Travel Agents (JATA)

A DX system for creating administrative documents submitted by travel agencies. It renders the same format as paper forms on the web and generates PDFs.

2020.08 - PresentSystem DevelopmentDXPDF Generation

AWS Infrastructure Implementation and Maintenance Supporting Supermarket Distribution for Unico System

Support for building and maintaining the infrastructure of a cloud service on AWS.

2020.07 - PresentAWSInfrastructureMaintenance

Maintenance and Development Support for a High-Traffic Advertising System

Improving database performance, rethinking caching strategies, speeding up API responses, and responding quickly to incidents.

2019.03 - PresentHigh TrafficAd SystemPerformance Tuning

Development Support for an Influencer Marketing System for Toridori Inc.

Joined the initial (zero) phase of building an influencer-to-business matching marketing system at Collabo Marketing Inc., the predecessor of today's Toridori Inc. (TSE: 9337).

2016.11 - 2018.09System DevelopmentVue.jsStartup