ResponsibilitiesWrite, and bug-fix, performant and accessible Javascript/HTML/CSS with a special emphasis on stability and long-term supportability.Ensure appropriate semantic tagging within the HTML and CSS.Provide clear, developer-focused documentation within the Javascript/HTML/CSS files and for the app as a whole.Work with QA to develop good, comprehensive functional tests.Research, trial, and recommend new web and mobile technologies that can improve development quality /efficiency or improve user interface.Has the ability to rapidly prototype new ideas, concepts, and designsWork with business analysts, user experience developers, and project management to estimate and provide updates on tasks.Qualifications4+ years experience building cross-browser, performance-conscious websites; most recent year in JavaScript Fluent in vanilla JavaScript (ES2015+), HTML, and CSSExperience building responsive web and mobile applications using modern frameworks such React, Vue, Angular. Experience with single-page apps preferred.Experience with front-end build, debug, and profiling tools (eg, webpack, Gulp, Chrome Developer Tools) Understanding some design methods/patterns such as DRY, SOLID, functional JavaScriptExcellent team player with good communication skills with both non-technical & technical co-workers Highly motivated and driven by a desire to solve difficult problems, and learn new technology