UI System Reboot for Modern FinTech Platform

Revamping a legacy financial interface with modern design patterns, accessibility upgrades, and performance optimizations to enhance user satisfaction by 47%.

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Overview

A legacy FinTech platform approached me with outdated design systems resulting in poor accessibility and inconsistent UI patterns. My role was to audit the existing system, rebuild the foundation using Figma and Storybook, and implement new design tokens for responsive patterns across web and mobile.

The Challenge

The prior design system included:

  • Outdated visual design without WCAG 2.1 accessibility compliance
  • Inconsistent component libraries across platforms
  • High cognitive load and visual noise in financial data displays
  • No responsive grid system for mobile/tablet adaptation

The Solution

Design Process

I led a cross-departmental audit with engineers and product managers to create a modern system using modular tokens and scalable components with 28+ reusable elements.

  • Full accessibility audit and contrast ratio testing
  • Custom grid system for financial dashboards
  • 12 new interactive patterns for transaction tracking

Implementation

Using Figma and React, we created a shared Storybook for component testing with live documentation and A/B performance metrics comparisons.

  • Design tokens for 8 base fonts and 16 color variants
  • Full mobile-first visual hierarchy rearchitecture

User Satisfaction

47% increase in user satisfaction from post-migration surveys

Accessibility

100% WCAG AA compliance

Performance

32% faster page load times

Design Impact

Before

  • 14% bounce rate for financial reports
  • 32% of users reported UI complexity
  • Lowest score in annual accessibility audit

After

  • 47% improvement in user retention
  • Accessibility score: 98% conformance
  • 50+ reusable design patterns

Ready for Your Next Design System Update?

Whether you need a design system rebuild or want a UI optimization strategy, I help build systems that scale with your business.

Let's Build Together