Home / Work / Publicis Sapient
Publicis Sapient · 2023–2024
// context
Publicis Sapient is a global digital business transformation firm. I co-architected a digital banking platform there in React, TypeScript and Redux Toolkit, sustaining 99.9% uptime for 600K+ corporate and 7.5M+ retail users (8.1M+ total) processing 1M+ daily transactions - a data-dense enterprise fintech interface.
// challenge
The platform needed to handle massive transaction volume at enterprise scale, support multiple user types with complex permission structures, and deliver a modernized UI without disrupting existing banking workflows. Performance, accessibility and security were non-negotiable.
// approach
Co-architected the digital banking platform in React.js, TypeScript and Redux Toolkit with security best practices and WCAG accessibility compliance throughout
Built robust data layers using TanStack React Query across REST and GraphQL APIs handling 1M+ daily transactions
Modernized UI delivery using module federation and Atomic Design - translating Figma mocks into reusable accessible components with full i18n support
Applied performance optimization reducing average load times by 33% across all platform routes
Tightened CI/CD workflows reducing deployment cycle time and improving release reliability
// outcomes
99.9% uptime across 8.1M+ users
33% load time reduction
25% improvement in user satisfaction scores
1M+ daily transactions handled reliably
// more work