Logan Gelzer
Senior Shopify Expert in Miami.
I'm Logan — a Senior Shopify Expert based in Miami. For 12+ years I've been building, shipping, and scaling ecommerce experiences for direct-to-consumer brands.
I specialize in Shopify Plus and headless commerce with Hydrogen and Next.js. Day-to-day that means custom Liquid themes, Shopify Functions, Checkout Extensibility, Checkout Blocks, and subscription/bundle flows with Recharge and Shopify Scripts.
A defining project was a Miami food brand where I took their ecommerce channel from $200/month to $250,000/month across three channels in two years — a 1,250× multiplier driven by CRO, A/B testing, and a performance-first rebuild.
Timeline
Started hands-on in ecommerce: customer service and sales at an online training company. Ended up running the whole site — WooCommerce builds, automations, and a Learning Management System.
Joined an ecommerce agency, leading projects across Shopify, Shopify Plus, WooCommerce, and BigCommerce. Built expertise in performance optimization and conversion-focused development.
Full-time Shopify Plus studio. Working with brands like Chubbies, Nolah, Alo Yoga, Overtime, Wild Wonder, BaronFig, and Kudos on headless builds, Checkout Extensibility, and CRO programs.
Specialties
- Shopify Plus theme development (Liquid, Online Store 2.0, sections & blocks)
- Headless commerce on Shopify Hydrogen, Next.js, Remix, and Builder.io
- Checkout Extensibility — Checkout UI Extensions, Checkout Blocks, Shopify Functions
- Subscription and bundle experiences — Recharge, Shopify Scripts, custom flows
- A/B testing programs, CRO audits, analytics implementation (GA4, GTM)
- Core Web Vitals and Lighthouse performance optimization
- Design-to-code from Figma with zero hand-off loss
Ready to work together?
Engagements start at $100/hr with a $1,000 minimum project size. Most projects are scoped up front after a short technical discovery.
Get in touch →