AngularJS1 year experience
Have used both angular 1x since it was released. I have also been using Angular 2 - 4 since the beta version. I have released production Angular 2 apps
Dart4 years experience
I have used Dart since Milestone 3 (Feb 2013) and have produced many Frontend and Server side Apps with it.
Google app engine3 years experience
I use Google cloud to host all of my work for the last 4 years and have had lots of experience using Google endpoints, storage, and data services.