TK®
Sunbeams over a mountain valley
Mount Fuji glowing at sunrise
Aerial view of Tokyo at dusk with Tokyo Tower
Waves crashing on a rugged coastline
N 35° 40′ — E 139° 45′Rec — 4K 24fps

Portfolio © 2026 — Tokyo, Japan

Truth &KnowledgeSEEKER

Tomoaki Kotsuka

Software Engineer — Web & AI

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Selected Work

(02) — 01 / 04

Macro shot of a circuit board

/01RAG SYSTEM

2026

AI Development — Retrieval-Augmented Generation

Corporate website on a studio monitor

/02CORPORATE SITES

2025

Web Design & Build — Two companies, end to end

Application code on a laptop screen

/03CLIENT WEB APPS

2024 —

Commissioned Development — From brief to launch

A team building together around one table

/04CO-DEV / ALAMOA

Ongoing

Mentoring — Building real products with students

(03) — About

I build for the web — apps, sites, and
AI systems that put knowledge to work.
Every project is a search: for the truth
of a problem, and the craft to solve it.

Portrait placeholder — light through forest canopy

Fig. A — portrait placeholder

Software engineer based in Tokyo, working across web and AI — from corporate sites and commissioned web apps to RAG-powered systems. At Alamoa, I coach co-development: building real products side by side with students. In a past life I was the employee representative who automated the back office with VBA — and a footballer from the age of five, which is where the discipline comes from.

Based in
Tokyo, Japan
Role
Web & AI Engineer
Teaching
Co-Dev at Alamoa
Status
Open for projects