Things I've built to solve real problems.

These are some of the projects I've worked on professionally and in my spare time. I focus on backend systems, APIs, and tools that make a measurable impact.

My recent works

  • Honnetenshoku

    Honnetenshoku

    Japanese workplace review platform enabling job seekers to research companies through employee feedback, salary data, and work-life balance ratings. Built the backend APIs powering the review and analytics systems.

    honnetenshoku.com

  • Universell

    Universell

    All-in-one business management platform consolidating CRM, POS, inventory, e-commerce, and marketing tools into a single system for small businesses. Developed the backend services, API layer, and the frontend Lead interface.

    universell.us

  • PTO CLI

    A PHP command-line tool for calculating remaining paid time off days, with support for accrual policies, part-time scaling, German public holidays, and year-end carry-over caps.

    github.com