Daniel T.

Shopify Sr. Dev. | Certified Shopify Expert | Shopify Design, CRO, AI

Shopify Plus developer specializing in custom themes and high-performance store builds for DTC brands. Successfully delivered over 144 projects, including e-commerce solutions for brands generating up to $550M in annual revenue, showcasing expertise in speed optimization, migrations, and advanced Shopify customizations. Proficient in Liquid coding, HTML, CSS, and JavaScript, ensuring optimized, conversion-driven online shopping experiences across diverse platforms. Committed to delivering tailored solutions for complex business needs. Founder of SellOnline Studio, Shopify Certified Partner in development and CRO If you’re a DTC brand serious about growth, your Shopify store needs to be fast, conversion-optimized, and built right the first time. That’s exactly what I deliver. I’m a certified Shopify & Shopify Plus Partner with 5+ years of experience building and optimizing stores for brands doing $500K–$150M in annual revenue. From launching new stores to rebuilding underperforming ones — I’ve done it 100+ times. ✅ 144+ projects delivered ✅ Trusted by brands doing up to $550M ARR ✅ Certified Shopify & Shopify Plus Developer ✅ 5+ years | 764+ hours tracked on Upwork My core strengths: ▪ Custom Shopify theme development & Liquid coding ▪ High-performance store builds from scratch ▪ Store speed optimization (Core Web Vitals, PageSpeed) ▪ WooCommerce → Shopify migrations ▪ Metafields, sections & advanced customizations ▪ Long-term store support & maintenance Who I work best with: Growing DTC brands and startups who want a reliable, senior-level Shopify developer — not a cheap fix that breaks in a week. I take on a limited number of projects at a time to ensure every client gets my full attention and best work. 📩 Message me with your project details - I’ll respond within a few hours and tell you exactly how I’d approach it. Shopify Expertise Keywords: Shopify customization, Shopify 2.0, Migration to Shopify, Shopify custom theme development, Migration, Shopify Plus, Shopify Checkout, Checkout Customization, Checkout Extensibility, Speed Optimization, Performance Optimization, Headless Development, Hydrogen, Oxygen, API Integration, App development, JavaScript, React.js, Next.js, Vue.js, Typescript, Remix, UI/UX, eCommerce, HTML, CSS, Liquid. CRO (Conversion Rate Optimization), Shopify Speed Optimization, Shopify Performance, Shopify Score, Shopify Checkout Extensions, Checkout UI Branding