Senior Software Engineer - JavaScriptJob DescriptionAs a JavaScript Engineer, you will be required to work on various JavaScript libraries that are served on our customers websites thereby impacting millions of users. These libraries are the core of all the features of VWO. We love vanilla JavaScript and work with cutting-edge technologies like TypeScript, Rollup.js, Cypress, ESLint.We are obsessed with Web Performance.Job Responsibilities:Development of Core JavaScript libraries.Writing reusable code or modules that can be used across all the JavaScript libraries.Talking about your work - we love open source software, we heavily use them, and talking about how we use them is the least we can do to help the community.Skills & Experience:-4-5 Years of ExperiencePassion for writing Vanilla JavaScriptStrong knowledge and experience in JavaScript, HTML, CSS.Work Experience with TypeScriptDeep understanding of the DOM, Browser Events, JavaScript APIs, Canvas rendering, etc.Deep understanding of how the browsers work.Regard for optimizations that focus to deliver content to the user as quickly as possible.Awesome Debugging Skills.Passion to write automated tests to verify the working of libraries (You cant possibly verify things on all devices and on all browsers manually). We use Cypress for this.Understanding the similarities and differences across browsers (young and old).Experience in writing modular JavaScript codeKnowledge of high-level programming concepts like promises, data-binding.Passion to stay up to date with the constantly evolving world of front-end development.Levels We have the following levels within different grades in our engineering teamSenior Software Engineer 1 Senior Software Engineer 2Lead Engineer 1Engineering Manager Senior Engineering ManagerAssociate Director Director VP Chief Technology Officer Expectations from you to succeed in this role