Andrew M.
Shopify Developer | Custom Stores & CRO Optimization | 10+ Years
PhD in Technical Sciences / Data-Driven Engineering. My academic background allows me to approach complex e-commerce problems with a high-level analytical mindset, ensuring robust system architecture and data-driven optimization of store performance. Been building and optimizing high-performance Shopify stores for 10+ years, helping brands increase conversion rates, site speed, and user experience with custom themes, API integrations, AI-powered features, and advanced checkout flows. Whether you need a Shopify 2.0 migration, headless storefront, or CRO-focused optimizations, I build stores that don’t just look great - they sell better. A slow, underperforming Shopify store kills conversions. If your site loads too slowly, doesn’t look right on mobile, or struggles with checkout drop-offs, I fix that. 🔹Functional & Technical Expertise ✅ Custom Shopify Store Development – Fully tailored themes built with Liquid, React.js, and Next.js. ✅ Conversion Rate Optimization (CRO) – Optimized UI/UX, A/B testing, and high-performing checkout flows. ✅ Headless Shopify Development – Using Shopify API, Next.js, and GraphQL for ultra-fast storefronts. ✅ Advanced Integrations & Features – Loyalty programs, AI-powered product recommendations, and third-party apps. ✅ Shopify Speed & SEO Optimization – Enhancing Core Web Vitals, page load times, and organic search rankings. ✅ Secure Payment Gateway Setup – Stripe, PayPal, Square, Apple Pay, Klarna, and custom checkout flows. ✅ Scalable & Reliable Deployments – AWS, Docker, Kubernetes for high-traffic Shopify stores. 💡 Shopify Projects & Results 🔹 Srsly - Shopify 2.0 Store with Subscription Model✔ Developed a custom Shopify 2.0 theme for a fast, responsive experience. ✔ Integrated a subscription-based checkout for recurring orders. ✔ Improved conversion rates by 30% through checkout optimization. 🔹Luxury Fashion eCommerce - Shopify Plus Customization ✔ Implemented AI-powered product recommendations to increase AOV. ✔ Optimized site speed, reducing page load times by 45%. ✔ Added multi-currency and international checkout options. 🔹 DTC Brand - Shopify API & Headless Development ✔ Built a headless Shopify storefront using Next.js + GraphQL API. ✔ Achieved sub-second load times, significantly improving user experience. ✔ Integrated a custom rewards program and automated email flows. Why Work With Me? ✔ 10+ years in Shopify & eCommerce Development – Built and optimized stores across multiple industries. ✔ Full-Stack Expertise – Shopify, Liquid, React.js, Next.js, Node.js, PHP, and Laravel. ✔ CRO & SEO Focused – I make sure your store loads fast, ranks well, and converts better. ✔ Long-Term Support – From Store setup to maintenance, I help brands scale their Shopify success. If your Shopify store needs an upgrade, migration, or better performance, let’s fix it. 📩 Send me a message, and let’s get started! 🔹 Shopify & eCommerce Expertise Shopify 2.0. Shopify Plus. Custom Shopify Themes. Liquid Development. Headless Shopify. Shopify API. React.js. Next.js. Node.js. PHP. Laravel. Conversion Rate Optimization (CRO). A/B Testing. AI Product Recommendations. Checkout Customization. Stripe. PayPal. Square. Klarna. Apple Pay. Shopify SEO. Core Web Vitals Optimization. Loyalty Programs. API Integrations. Subscription Payments. Multi-Currency Support. AWS. Docker. Kubernetes. Scalable eCommerce Deployments. Shopify Store Optimization. Custom Shopify Development. Shopify Theme Customization. Shopify Metafields. Shopify Metaobjects. Shopify Store Customization. Shopify Performance Optimization. Lighthouse Optimization. Shopify SEO. eCommerce SEO. Custom eCommerce Solutions. Scalable eCommerce Architecture. High-Traffic eCommerce Stores. DTC eCommerce Development. B2C eCommerce. B2B eCommerce. Headless Shopify Development. Hydrogen. Oxygen. Shopify Storefront API. Shopify Admin API. Shopify Webhooks. Checkout Optimization. Shopify Checkout Extensibility. One-Page Checkout Optimization. Shopify Scripts. Shopify Functions. Shopify Flow Automation. Shopify CLI. Shopify Public App Development. Shopify Private App Development. Shopify App Extensions. Custom Shopify Apps. Shopify Payments. Subscription-Based Checkout. Product Bundles. Advanced Product Filtering. Upsells & Cross-Sells. Cart Abandonment Recovery. eCommerce CRO. WooCommerce to Shopify Migration. Shopify Migration Expert. Magento to Shopify Migration. BigCommerce to Shopify Migration. Full Store Migration. Shopify Store Redesign. Shopify UX/UI Optimization. Shopify Ongoing Support. Shopify Bug Fixes. Emergency Shopify Fixes, Performance Audits. Klaviyo Integration. Full-Stack Shopify Developer. Full-Stack eCommerce Developer. 📆 Last Updated: 11/04/2026
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $9.1k
Billed in all: $25,919$26k
$1.1k in the last 6 months
Across 9 contracts
Across 21 contracts
Earnings, last 30 days
Skill rankings: Top 8% in Web Design
Ranked by MRR among everyone on Upwork with the skill.
- #33Custom Ecommerce Platform Development226 freelancers · 🇸🇪 #1Top 15%🇸🇪#1 of 1
- #34Ecommerce Platform265 freelancers · 🇸🇪 #1Top 13%🇸🇪#1 of 1
- #40Custom Ecommerce Store276 freelancers · 🇸🇪 #1Top 14%🇸🇪#1 of 2
- #256Shopify Website Redesign2,433 freelancers · 🇸🇪 #1Top 11%🇸🇪#1 of 2
- #337Shopify Templates3,688 freelancers · 🇸🇪 #1Top 9%🇸🇪#1 of 4
- #347Shopify Website Design3,714 freelancers · 🇸🇪 #1Top 9%🇸🇪#1 of 4
- #355Shopify Apps3,368 freelancers · 🇸🇪 #1Top 11%🇸🇪#1 of 7
- #447Shopify Theme4,613 freelancers · 🇸🇪 #1Top 10%🇸🇪#1 of 8