Extensive knowledge of CSS using SASS, LESS and JS methods for providing performant visual effects and keeping the framerate above 30fps at all times.
Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system.
Validating user actions on the client side and providing responsive feedback
Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed.
Creating custom, general use modules and components which extend the elements and modules of core Angular JS.
Experience with all levels of operation available to the front-end, such as from creating XHRs in vanilla JS to using a custom wrapper around $resource.
Experience with building the infrastructure for serving the front-end app and assets.
Architecting and automating the build process for production, using task runners or scripts.
Documenting the code inline using JS Doc or other conventions.
Writing extensive unit tests using automated TDD tasks.
Creating e2e test suites for all components, and running them with Protractor or a well-reasoned alternative.