Hassan is currently a senior frontend engineer at Doordash. Prior to Doordash, Hassan worked at Instacart and Shopify, where he helped build large production applications at-scale. Hassan is also a published author and course instructor and has helped thousands of students learn in-depth fronted engineering tools like React, Vue, TypeScript and GraphQL. Hassan’s non-work interests range widely and, when not in front of a computer screen, you can find him at the gym, going for walks or running through the six.