Must have experience in REST APIs, JavaScript, MongoDB. Design and implementation of low-latency, high-availability, and performant applications Integration of user-facing elements developed by front-end developers with server-side logic Writing reusable, testable, and efficient code Integration of data storage solutions may include databases, key-value stores, blob stores, etc. Basic understanding of front-end technologies, such as HTML5, CSS3, and SCSS Understanding fundamental design principles behind a scalable application