Javascript frameworks: MERN / MEAN stack and Headless CMS (Gatsby, Contentful) Node.js, Express JS, Mongoose, Redux, Angular, React, GraphQL (I am constantly improving).
If your project aim is to offer blazing fast solution for today's market demand. Instead of sacrificing speed it takes advantage of Gatsby ecosystem, together with easy checkout and management of Shopify. Should you want this to be your new, high-performing website, give me a shout!