Portfolio · 2020–2026

Marsel
Bait.

Product designer in Tokyo. Working across bilingual recruitment, multi-domain Japanese client work, and AI-native tooling. Building for the era when the user isn't always human.

Based in Tokyo, Japan
Visa Engineer visa (Japan)
Availability Product and Design roles

Selected work

Bilingual product design and brand systems. End-to-end ownership from research through to shipped UI.

Enjin.world platform hero image
2020–2024

Enjin.world

Bilingual recruitment platform. Three sub-brands, one system. Sole designer on the 2023 revamp after four years on the product.

UI/UX · Branding · Graphic Read case study
Miraidukuri tour site: cinematic landing hero with 'Timeless wisdom, Future vision' lockup over Japanese cuisine imagery
2024–present

Miraidukuri

Tokyo social enterprise spanning tourism, regional revitalization, health, and circular economy. Design across tour booking, brand identity, and print.

Web · Brand · Print Read case study

Personal projects

Zero-to-one work. Designing for what I think the future is: AI agents as the user. The Seer is the exception, a bilingual astrology PWA I've wanted to build for years.

Rippr: rip YouTube transcripts into clean files for AI
2026

Rippr

YouTube transcript extractor for AI agents. MCP server and Chrome extension. No API keys, three output formats.

npm Chrome Web Store GitHub
MCP server rakuten-mcp $ npx rakuten-mcp
2026

Rakuten MCP

Rakuten's Web Service as callable tools. Ichiba, Travel, Books, and Recipe across one Japanese commerce surface.

npm GitHub
Nankai Trough hazard map showing earthquake intensity across Japan
2026

Nankai Trough Hazard Map

Bilingual earthquake hazard map for Japan's highest-risk seismic zone. Cabinet Office 250m mesh data on one interactive surface.

Live npm
MCP server japan-ux-mcp $ npx japan-ux-mcp
2026

Japan UX MCP

Japanese web UX conventions as callable tools. Forms, typography, keigo, seasonal context. Ten tools, ten prompts, nine resources.

npm GitHub
The Seer: bilingual astrology PWA with cosmic oracle visuals
2026

The Seer

A bilingual astrology PWA. Swiss Ephemeris precision, oracle tone, four profile types. In development.

Preview
MCP server paypay-mcp $ npx paypay-mcp
2026

PayPay MCP

MCP server for PayPay, Japan's largest QR wallet. Built on the Open Payment API. Sandbox-first, refund and cancel gated.

npm GitHub

Featured here. More on GitHub and npm.

About

Product design, brand systems, and AI-native tooling.

Seven years of product design. Bilingual product work, brand and visual systems, motion and print. Solo end-to-end ownership is the throughline, from research through to shipped UI.

Since 2026 the personal work has been focused on open-source AI tooling: MCP servers, Chrome extensions, design-eng experiments.

Currently Visual Designer, Miraidukuri Company Tokyo · since 2024
Previously Product Designer, Enjin Inc. Tokyo · 2020–2024
Education M.A. Media Design, Keio University B.A. Visual Communication, UP Diliman
Certifications Google UX Design · Claude Code in Action · AI Fluency Agent Skills · Generative AI
Languages English · Native Bahasa Indonesia · Native Filipino · Conversational Japanese · Conversational
Tools Figma · Photoshop · Illustrator · After Effects
AI Stack Claude Code · OpenAI Codex · Gemini
Get in touch
CV LinkedIn GitHub