Ecommerce Platform Specialist & Multi-Brand Systems Architect.
I like to build things, with code.
Senior Frontend Engineer with deep expertise in high-traffic ecommerce systems, shared component platforms, and scalable multi-brand architectures.
I drove WSS revenue from $15K → $3M+, modernized enterprise storefronts, and delivered production-grade frontend systems used across 12+ global Estée Lauder brands including La Mer, MAC, Clinique, Aveda, Jo Malone, and Dr. Jart+.
With a strong background in React, Shopify, TypeScript, and performance optimization, I specialize in building systems that reduce code duplication, accelerate feature delivery, and drive measurable conversion uplift.
Consultant Engineer
Engineered shared frontend components across 12+ global brands, reducing code duplication and accelerating feature delivery across markets. Resolved complex UI, cross-brand, and performance issues for platforms serving millions of monthly visitors. Delivered revenue-driving modules and UX improvements contributing to measurable conversion uplift.
Senior Frontend Engineer
Grew ecommerce revenue from $15K → $3M+ annually through four major platform migrations (KIBO → ShopVisible → Aptos → Shopify). Achieved 30% YoY increase in daily customer acquisition. Improved site performance by 40% via Lighthouse optimization. Built custom CMS in Shopify Liquid and engineered complete GTM dataLayer architecture.
Co-Founder / Lead Frontend Engineer
Built and launched a cross-platform retail mobile app using React Native/Expo in 5 months with full iOS/Android feature parity. Developed proprietary "Scan and Find" camera-based SKU locator with real-time availability. Integrated Shopify GraphQL APIs and built loyalty points system using Aptos CRM.
Frontend Engineer
Delivered Shopify storefronts and custom ecommerce solutions using React, Liquid, and Node.js for beauty, fashion, and retail clients. Achieved ~30% improvement in mobile engagement rates. Built advanced Shopify features including custom product swatches, filterable galleries, and bot-protected checkout workflows.
Got a project in mind? Looking for a senior engineer to join your team? Let's talk about how we can work together.
jkimdev01@gmail.com