Implement all the back end code for the project from scratch (node.js, Typescript), including our own node in the blockchain.

Introduced inhouse websockets through graphQL subscriptions that managed to scale the live auction users to millions, supporting thousands on the single auction

Magpie is an e-commerce app the allows you to sell collectible cards (Sports, TCG, other) in multiple sales channels like eBay, Shopify and Square.