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日本語 English 鹿児島弁

Selected Work

Examples of systems, infrastructure, and operational improvements

Recent Projects

2025: Windows Server 2022 upgrade

Upgraded existing web and database servers from Windows Server 2016 to Windows Server 2022.

2024: Redmine server consolidation

Consolidated several Redmine environments onto a single Linux server using Ubuntu 24.04, Nginx, systemd-nspawn, Apache/Passenger, and Redmine.

2022-2023: Auto-call platform integration

Integrated three existing outbound and predictive calling systems into one platform over a 24-month project.

  • Ruby on Rails
  • Asterisk
  • PostgreSQL

2021: Voice translation service integration

Built a JavaScript API and intermediary server for connecting to a voice translation service.

  • TypeScript / JavaScript
  • Node.js
  • systemd-nspawn containers

Earlier Work

Work has also included automated calling systems, inventory management for a small winery, voice recognition applications, IoT inspection equipment, medical-information demonstrations, e-commerce security updates, and Windows client applications.

The common thread is practical delivery: improving an existing operation, keeping systems maintainable, and choosing technology that matches the real scale of the work.

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