Job Summary A Node.js developer is responsible for writing server-side web application logic in JavaScript and/or variants of it. Node.js developers usually develop back-end components, connect the application with the other (often third-party) web services, and support the front-end developers by integrating their work with the Node.js application. Responsibilities Integration of user-facing elements developed by front-end developers with server side logic Writing reusable, testable, and efficient code Design and implementation of low-latency, high-availability, and performant applications Implementation of security and data protection Integration of data storage solutions Qualifications Strong proficiency with JavaScript Knowledge of Node.js and frameworks available for it - such as Express, Koa, etc Understanding the nature of asynchronous programming and its quirks and workarounds Good understanding of server-side templating languages - such as Jade, EJS, etc Good understanding of server-side CSS preprocessors - such as Stylus, Less, Sass, etc Basic understanding of front-end technologies, such as HTML5, and CSS3 Proficient understanding of code versioning tools, such as Git Implementing automated testing platforms and unit tests