Aaron Chai

Built a Shopify app using React Router, TypeScript, Node.js, and PostgreSQL to render clustered store maps and stay fast across 40,000+ locations in 25 languages. Shipped guided set-up and CSV imports with geocoding, and protected map rendering behind HMACK-verified app-proxy endpoints and Shopify webhooks. Engineered privacy-safe search analytics dashboards that flag demand gaps where shoppers don’t find nearby stores, with CSV export.

Owned end-to-end engineering for la-girlusa.com and lacolors.com across 2,600+ SKUs. Led store-front relaunch from theme architecture to live cutover, implementing reusable Liquid sections and building component-driven templates with JavaScript, Tailwind CSS, and Web Components—cutting duplicate code and improving deployment speed. Improved store front performance by removing render-blocking third-party scripts, clearing orphaned assets, and improving site health; raised site health and reduced LCP for faster shopping. Built a B2B wholesale portal for 120+ accounts with a gated Liquid front end and back-end services using Cloudflare Workers, HMACK-verified App Proxy, Admin GraphQL, and rate limiting to reduce quote turnaround from 3+ days to under 4 hours. Developed Python pipelines to normalize 10,000+ product attributes, automate daily catalog refreshes, sync via GitHub Actions, and migrate 237 product descriptions with LLM-assisted workflows. Restored site-wide SEO metadata and fi

Supported Shopify and five marketplace operations (Amazon, Walmart, Home Depot, Wayfair, Lowe’s): listings, pricing, and order/customer issue workflows. Built a Python + Shopify Flow cross-channel inventory system achieving 99.5% inventory accuracy and 35% cross-platform sales growth. Automated reconciliation and reporting with pandas (reducing manual entry by 60%) and optimized store front pages, cutting load time by 28%.