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 Open to senior product roles

Selected work

Bilingual product design, brand and visual systems, AI-native developer tools. End-to-end ownership across product, brand, and code.

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. Leading customer-facing design solo.

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

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

    npm Chrome Web Store GitHub
    2026

  • Japan UX MCP

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

    npm GitHub
    2026

  • PayPay MCP

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

    npm GitHub
    2026

  • The Seer

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

    Preview
    2026

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 open-source AI tooling: MCP servers, Chrome extensions, design-eng experiments. That's where most of my reps go now.

Currently Customer-facing design (solo), 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 · Claude Code
Get in touch
Portfolio PDF CV LinkedIn GitHub