My first experience with Shopify was over 6 years ago when I started working for a large Payment Service Provider in The Netherlands. I had to build/maintain the plugins/apps for different e-commerce systems (Shopify, Magento, WooCommerce, PrestaShop, etc...) that handled all of the payments in those systems. After that I worked for a sanitary store building/maintaining their Magento store and all of the systems that were connected to that store (Channable, Picqer, Akaneo) After that I build some stores from scratch in both Shopify and Magento and after finding out how much more I enjoy working in Shopify than any other system I started specializing in Shopify.