Full-stack engineer & CTO who ships products end-to-end — from ad operations and SEO to system architecture and cinema-grade 3D rendering on the web.

Languages

Frontend

Mobile

3D / WebGL / AR

Backend

CMS / E-Commerce

Infrastructure & Data

AI

Auth / Payments

Testing / Quality

• 🏭 Manufacturing SaaS (0→1) — Next.js 16 + Rails 7 + Strapi 5 + Three.js. Hierarchical pricing engine, 8-stage order workflow, and a 3D product viewer that recreates Apple-style cinema-grade lighting on the web (Three-Point Lighting + ACESFilmic tone mapping + Lightformer environment lighting)
• 💅 WebGL Nail Art Preview + AR — Photorealistic 3D hand rendering entirely in the browser using PBR materials, a custom Canvas 2D texture compositing pipeline, and ink-drip fluid animation (605-line HandModel). AR hand tracking via MediaPipe + ONNX Runtime Web
• 📰 Headless CMS Platform — Next.js + Strapi 5 with Container/Presenter architecture, draft mode, cache-tag revalidation, and full SEO suite
• 🧠 LLM Resume Parsing — AI-powered resume analysis integrated into a recruitment SaaS Rails API
• 🧑‍🤝‍🧑 Internal HR System (0→1) — Rails-based candidate scoring, interview pipeline, and automated fee calculation
• 🚀 20+ Landing Pages in One Month — Rapid page production for a customer success platform
• 📊 10,000+ commits across 45 repos in the 2025–2026 period

3D

• Mesh Editor on Browser — Edit 3D mesh vertices and faces directly in the browser
• Lighting Editor on Browser — A no-code tool that lets non-engineers set up Apple-style cinema lighting with a simple GUI, making cinematic 3D product shots accessible to anyone

Web Services

• Online Oripa Platform — Full-stack online trading card lottery platform (Nuxt 3 + Prisma + PostgreSQL + Pay.jp + GCP Cloud Run) with product/SKU management, pack system, point economy, payment, and admin panel
• Diagnostic Builder — No-code quiz / diagnostic tool builder with branching logic and score-based results
• Eye-Catch Generator — Browser-based thumbnail image editor for media and blog content, with Stripe subscription billing

10+ years building web products in Tokyo — from WordPress sites to full-stack SaaS, mobile apps, 3D/AR experiences, and AI-powered platforms. As CTO at two companies and Head of Marketing at another, I've led teams, launched new business lines, and driven measurable growth (400% ad ROI, 2.5x GMV, JPY 9M/mo media revenue). Currently working as a freelance full-stack engineer while co-running an AI-focused company as CTO.

_{Last updated: April 2026}