Qualifications   5+ years professional software engineering experience, at least 2 years working with modern JavaScript frameworks such as Angular, React, Vue, Backbone, or Ember developing scalable, performant applications Be well-versed in best practices in writing efficient, understandable CSS and accessible, standards-compliant HTML Understand front end performance Familiarity with current front end build systems (Webpack, Rollup) Well-versed in writing and running unit- and integration tests