Portfolio · 2020–2026

Marsel
Bait.

Product design is not about aesthetics. It is about judgment. What to build, what to cut, what to leave alone.

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 conversations

Selected work

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

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.

    2026
  • Japan UX MCP

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

    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.

    2026
  • The Seer

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

    2026

Featured here. More on GitHub and npm.

About

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

Four years owning product design at Enjin as the sole designer on the 2023 revamp across three verticals: Career, Forum, and Community. Ran 20+ user interviews, mentored design interns, and built a component library that cut design-to-engineering handoff friction. Owned end-to-end from information architecture through shipped UI.

The current role spans bilingual web, brand identity, print collateral, and campaign content. Closer to a creative director's scope than a typical product role, executed solo, sketch to ship under one name.

On the side, shipping AI-native tooling. MCP servers on npm, a Chrome extension on the Web Store, and a bilingual PWA in development. All designed and built with AI-assisted development.

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 Filipino · Bahasa · Japanese conversational
Tools Figma · Photoshop · Illustrator · Adobe XD · After Effects · Claude Code
Get in touch