Londinium Espresso — Ecommerce Platform
Executive Summary
Londinium Espresso is a premium eCommerce platform built to deliver a seamless, high-end shopping experience. As Frontend Developer, I developed the responsive storefront interface, optimized application performance, and implemented secure payment infrastructure ensuring the platform met the quality and reliability standards expected of a premium consumer brand.
Technical Stack
- React.js
- Shopify Polaris
- Tailwind CSS
- Headless UI
- Zustand
- Bugsnag
- Swell.is
- Swell Payment API
The Challenge
The platform demanded a consistent, accessible design system capable of handling complex UI interactions at scale. Performance bottlenecks in global state management were slowing down the checkout experience directly impacting conversions. Runtime errors were going undetected, threatening platform stability, while payment processing required a secure, reliable headless integration.
The Solution
Built the storefront using React, Tailwind CSS, and Shopify Polaris for a consistent design system, and implemented keyboard-navigable components via Headless UI. Migrated global state from Context API to Zustand to eliminate unnecessary re-renders. Integrated Bugsnag for real-time error monitoring and connected Swell's headless payment API to enable secure Stripe transactions.
Results
Measurable Outcomes // Key Performance Indicators
40% improvement in checkout speed post-Zustand migration
Real-time error monitoring via Bugsnag
Fully accessible, keyboard-navigable UI components across the storefront
Secure Stripe transactions enabled through Swell's headless payment API