Ishay RosengartenAll work

Strongful

Led the Shopify platform for an active-lifestyle clothing brand. Cart abandonment down 15 percent, LCP down 40 percent.

Role
Software developer and CTO
Year
2024 to 2025
Built with
Shopify Functions, Checkout Extensibility, Liquid
Link
Visit site

I joined Strongful to own the storefront end to end. The site was a standard Shopify theme with a slow checkout and a support inbox full of order-status questions.

I re-architected the storefront as a single-page application without losing SEO rankings, cutting time-to-interactive by 60 percent. Responsive images, preloading, and deferred JavaScript brought Largest Contentful Paint down 40 percent. Checkout enhancements built on Shopify Functions and Checkout Extensibility lifted conversion 15 percent.

Automated notification flows cut support inquiries by 35 percent. Cart abandonment fell 15 percent and checkout completion got 10 percent faster.

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