Senior UX/UI Lead · Fintech · Design Systems

Simplifying high-stakes financial experiences.

I lead product-minded UX/UI for enterprise fintech, turning research and complex systems into accessible products teams can ship and measure.

View selected work About me →
Mao Ratha, UX/UI lead based in Phnom Penh

Featured case study

Canadia Bank

Trusted intelligence for everyday banking

A design case study on modernizing legacy mobile banking, and earning permission for AI with conservative retail customers.

Role
Senior UX/UI Lead
Outcome
Launched a redesigned mobile core with an AI insights module that reached 34% weekly active use in pilot markets without increasing support tickets.
  • Balanced cutting-edge AI insights with a conservative retail audience, earning permission one screen at a time.
  • 34% weekly active use on the insights module in pilot markets, with no increase in support tickets.
Read the case study
Selected work

More case studies

Wing Bank Mobile Banking App

Scaling a high-traffic consumer banking app through rapid releases, using AI in the design workflow to turn feedback floods into shippable UI, faster.

Role
UX/UI Lead
Outcome
Cut concept-to-dev handoff on priority flows from ~3 weeks to ~10 days while improving consistency scores across top journeys by 40%.

NSSF Mobile App

Turning Cambodia’s National Social Security Fund bureaucracy into a member app anyone can use, with plain language, accessibility-first patterns, and AI-assisted copy clarity.

Role
UX/UI Designer
Outcome
Shipped member flows with WCAG-aligned patterns; plain-language screens lifted task completion in testing from 61% to 89% for first-time users over 55.
Career

Experience

  • Canadia Bank Plc.

    Senior UX/UI Lead Sep 2023 – Feb 2026

  • Wing Bank (Cambodia) Plc.

    UX/UI Lead July 2019 – Aug 2023

  • Melon Rouge Agency

    Digital UX/UI Designer Mar 2017 – Jun 2019

View full experience

Writing

Thoughts

  • Cost of growth

    Solving real problems isn't about knowing the answer, it's about the willingness to figure it out under pressure.

    • design
    • product
    • leadership

  • Why I'm chasing "Enough"

    There is a restlessness in tech. We are constantly told to scale, to upgrade, to add, to expand. We measure success by accumulation.

    • design
    • product
    • writing

  • Local-first publishing

    Markdown in git is boring technology. That is why it works.

    • writing
    • workflow

View all thoughts

Contact

Let's connect

Questions about a UX/UI project or consulting? Email me, connect on LinkedIn or Telegram, or download my resume.

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