Oleksandr Melnyk

At Convertlab, I led the design and development of Shopify solution architecture, including reviewing code and mentoring junior developers. I built public and custom Shopify apps, headless stores, and automated store processes through Shopify Functions & Flow, significantly reducing manual intervention. Additionally, I integrated third-party services such as ERP, CRM, payment gateways, and loyalty programs, while improving site speed and lighthouse scores.

Built the Shopify solution architecture and conducted code reviews including mentoring junior developers. Developed Shopify public or custom apps, headless stores, and automated store processes using Shopify Functions & Flow to reduce manual intervention. Integrated third-party services including ERP, CRM, payment gateways, and loyalty programs. Improved site speed and Lighthouse scores.

I implemented conversion rate optimization strategies by designing and executing A/B tests, optimising product detail pages, and reducing cart abandonment rates. I successfully deployed personalized recommendations and upsell strategies to increase average order value, implemented heatmap and analytics tracking (Hotjar, GA) to identify drop-off points, improved mobile-first experience, and worked closely with marketing teams. I also created dashboards and reporting tools.