Given your skillset, I'd pick React over Scala or Docker. If you're into PHP/Wordpress, you could also look at Drupal 8, which was just released. Given your CSS

Given your skillset, I'd pick React over Scala or Docker. If you're into PHP/Wordpress, you could also look at Drupal 8, which was just released. Given your CSS/JSS/Angular skills, you could also look at Meteor for apps. All that said, from a blank slate perspective, I'd suggest learning Phoenix (http://www.phoenixframework.org http://www.phoenixframework.org), and in turn Elixir. Phoenix is great framework for building moderns apps, in that it's open source, database & frontend agnostic, leveraging the battle-tested Erlang VM, highly scaleable (WhatApp built w/Erlang), and real-time (via Channels). Good overview video here: https://vimeo.com/131633172 https://vimeo.com/131633172