Evidence of the transformation

A global fintech company was struggling with a monolithic Ruby on Rails frontend that had grown unmaintainable over 8 years. Build times exceeded 45 minutes, developer onboarding took weeks, and Lighthouse scores hovered around 45 on mobile. The legacy system couldn't support the company's expansion into 12 new markets.

Before we could change anything, we had to understand what was actually breaking: user pain points, system bottlenecks, and business constraints that were not aligned.

We decomposed the monolith into a composable architecture using Next.js 16 with React Server Components. Critical financial widgets were migrated first using the Strangler Fig pattern to de-risk the transition. Each micro-frontend owned its data fetching, state, and error boundaries. We implemented Edge caching for public pages and aggressive ISR for authenticated dashboards. The design system was rebuilt from scratch with Radix UI primitives and Tailwind v4, ensuring consistent UX across all markets.

We rebuilt the system with modularity and clarity in mind, using modern tools and patterns that would scale with their needs.