FinTech Leader Achieves 50% Faster Time-to-Market by Modernizing Legacy UI with a Dedicated React.js POD
Industry Financial Technology (FinTech)
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Series C Funding
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50% Faster Time-to-Market
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New York, HQ
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40% Performance Boost
Client's Testimonial
The decision to partner with Developers.dev was a turning point for our product roadmap. Their React.js POD was not just a group of coders; they were true engineers who took ownership of the migration. They delivered a high-performance, scalable front-end that has delighted our users and energized our development team. We are now launching features 50% faster than before.
Mark Stanfield, VP of Engineering
Client Introduction
A Series C FinTech company based in New York, providing a wealth management platform for financial advisors. Their existing platform was built on an outdated version of AngularJS, which was slow, difficult to maintain, and made it challenging to attract new engineering talent. They needed to modernize their front-end to improve performance, enhance the user experience, and accelerate feature development to stay ahead of the competition.
Problem
The client's monolithic AngularJS front-end was hindering their growth. It suffered from poor performance, a high bug rate, and a slow, cumbersome development process. They needed to migrate to a modern, scalable framework without disrupting their existing services for thousands of users.
Key Challenges
Zero-Downtime Migration
The migration had to be performed incrementally without impacting the live production environment.
Complex Business Logic
The platform contained years of complex financial calculations and state management logic that needed to be carefully refactored.
Team Integration
The new team needed to integrate seamlessly with the client's in-house back-end and product teams.
Performance Goals
The new application needed to meet stringent performance benchmarks, including a sub-2-second load time.
Our Solution
We deployed a dedicated "Java Microservices Pod" (in this context, a JavaScript-focused pod for a Java backend) composed of a Senior React Architect, two Senior JavaScript Developers, and a QA Automation Engineer.
↔️ Strangler Fig Pattern
We proposed and implemented a phased migration strategy using the Strangler Fig pattern, gradually replacing old AngularJS modules with new React components.
🧱 Component-Based Architecture
We designed a reusable component library in React and Storybook, which standardized the UI and accelerated future development.
🗄️ State Management with Redux
We implemented a robust state management solution using Redux Toolkit to handle the complex application state.
🧪 Automated Testing
Our QA engineer built a comprehensive end-to-end testing suite using Cypress to ensure the new components were bug-free and integrated correctly with the existing back-end APIs.
Implementation and Execution
Discovery & Planning
Conducted a 2-week deep dive into the existing codebase and infrastructure.
Foundation
Set up the new React application, CI/CD pipeline, and component library.
Incremental Migration
Began migrating the most critical user workflows, running the new React code alongside the old AngularJS code.
API Layer Refinement
Worked with the client's back-end team to optimize API responses for the new front-end.
Performance Tuning
Conducted extensive performance profiling and optimization to meet Core Web Vitals targets.
Final Cutover
Decommissioned the final AngularJS module and transitioned fully to the new React platform.
Positive Outcome
⚡ 50% Faster Feature Development
The new component-based architecture allowed the client to build and ship new features in half the time.
🚀 40% Improvement in Performance
The application's Lighthouse performance score increased from 55 to 95.
✅ 60% Reduction in UI Bugs
The combination of TypeScript and automated testing led to a significant decrease in production bugs.
🌟 Improved Talent Acquisition
The modern tech stack made it easier for the client to attract and hire top-tier in-house developers.
Why Choose Us
🧠 Ecosystem of Experts
Ecosystem of Experts
🏆 CMMI Level 5 Maturity
CMMI Level 5 Maturity
🧑💻 100% In-House Talent
100% In-House Talent
🎁 Risk-Free Trial
Risk-Free Trial
👍 Guaranteed Replacement
Guaranteed Replacement
🔒 Full IP & Data Security
Full IP & Data Security
🤖 AI-Augmented Delivery
AI-Augmented Delivery
🌐 Global Delivery, Local Feel
Global Delivery, Local Feel
⭐ Proven Track Record
Proven Track Record
Conclusion
By providing a dedicated, expert POD and a strategic migration plan, Developers.dev enabled the FinTech client to overcome their technical debt, accelerate their product roadmap, and secure a competitive advantage in a fast-moving market.