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 AngularJS
Experience with building the infrastructure for serving the front-end app and assets
Proficient understanding of code versioning tools, such as Git
Architecting and automating the build process for production, using task runners or scripts
Creating configuration, build, and test scripts for Continuous Integration environments
Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system