FinStack Ireland
An in-depth look at how we scaled a modern fintech infrastructure using Next.js and Tailwind CSS, preparing FinStack for international expansion.
The Challenge
FinStack approached us with a monolithic legacy system that was holding back their growth. Their infrastructure struggled with scale during peak trading hours, their user interface felt outdated compared to neo-bank competitors, and key conversion metrics for onboarding new B2B clients were dropping. They needed a strategic partner to entirely rethink their digital infrastructure.
Our Approach
We started with a deep-dive discovery phase focusing on high-frequency trading user journeys. We selected a modern React Server Components stack (Next.js) that would guarantee fast load times while securing sensitive data. We implemented a headless architecture to separate the frontend trading experience from their secure banking backend API.
Key Deliverables
- High-Performance React UI
- Secure API Middleware
- Real-time WebSocket Integration
- Automated KYC Flow
The Results
The impact was immediate. Core Web Vitals scores skyrocketed to near-perfect 100s across the board. The improved user experience directly correlated with a 140% increase in onboarding conversions and active users scaled past 50,000 within three months.