Rasterfield

I turn complex rules and processes into products people can actually use.

Hello, I'm Miyuki.

I'm a product designer who starts with the rules, then designs the screens.

I've worked on a wide range of projects, from entertainment to highly regulated products like superannuation and wealth management platforms. These days, AI is part of my workflow. I use it for research and building working prototypes when a flow is too complex for static screens.

Case Study 01

White-Label Product & Auth0 Integration

Under an active bot attack driving verification-code costs, redesigned and integrated Auth0 for 250,000 members on a 300,000-member white-label superannuation platform.

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White-Label Product & Auth0 Integration
Case Study 02

Recurring Contribution Visibility

Built the first-ever operational tool for finance teams to track and manage 600–800 monthly contributions across complex settlement cycles — designed as a strategic bridge to PayTo instant payments.

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Recurring Contribution Visibility
Case Study 03

Personal Contributions Automation

Replaced a manual Excel-based exception process with a scalable in-system workflow for managing 250+ daily personal contribution transactions — bringing unallocated transaction handling off spreadsheets and into the platform.

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Personal Contributions Automation
Case Study 04

AI in Practice

Two experiments applying AI to real design workflows — competitor benchmarking that killed a low-value feature request, and AI-accelerated research synthesis. Honest about where AI helped and where it didn't.

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AI in Practice
Graphic Design

Graphic Design & Art Direction

Personal design projects exploring print, packaging, and visual identity — from Bauhaus-inspired strategy cards to annual wine label art direction.

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Graphic Design