Client
UK Trading Platform
FinTech platform overhaul: faster orders, cleaner UX, robust testing & CI/CD.
- Client
- Major British FinTech Company
- Industry
- FinTech
- Solution
- Platform Modernization
Challenge
Their trading platform (stocks, Forex, commodities) was losing clients to slow execution, fragmented architecture, and accumulated legacy tech debt.
- Slow UI — orders took up to 2 seconds to execute
- High new-user churn — 15% quit within the first week
- Legacy tech debt — old Ember + Handlebars code slowed down development
- Fragmented architecture — React/Redux + STSS worked poorly together, causing bugs
- Lost clients, overloaded support, and missed profits
Business Goals
- Cut order execution latency to sub-second levels
- Reduce first-week trader churn
- Retire legacy Ember/Handlebars code and unify the frontend stack
- Stabilize the platform under high-load events (NFP, news spikes)
- Accelerate release cadence to compete with modern brokers
Solution
01 Performance boost:
- Migrated critical parts to React + WebSockets — price updates went from 2000ms → 500ms
- Refactored Redux store — cut CPU load by 35%
02 UX overhaul:
- Added 1-click trading — 28% faster trades
- Streamlined navigation — key actions now in the golden triangle of the screen
03 Reliability and testing:
- 100% test coverage (Jest + Cypress) — 70% fewer bugs
- Upgraded CI/CD — feature releases went from 2 weeks → 3 days
How the Solution Works
Real-time market data flows over WebSockets straight into a refactored Redux store, so price ticks and order updates hit the UI in under 500ms. The critical trading paths were rewritten in React with a 1-click execution flow placed in the visual hot zone of the screen. Full Jest + Cypress coverage and an upgraded CI/CD pipeline let the team ship feature releases every few days instead of weeks.
Results
- 78% faster order execution
- 17% more new traders stayed (in 3 months)
- 40% fewer support tickets
- Zero downtime during high load (e.g., NFP news)
Why us
- FinTech expertise — we know trading systems inside out
- Full-cycle approach — from code refactoring to usability testing
- Seamless teamwork — coordinated 12+ devs across time zones
Tech Stack
- React + Redux frontend
- WebSockets for real-time market data
- Jest + Cypress test coverage
- Modern CI/CD pipeline
