Many "boring old companies", well, aren't. I work in Cable and could have written the same job post (subbing Ember for AngularJS in our case). In a culture where results count, and fast results count more, you may be surprised where you can look for jobs.

Edit: It's actually remarkable how close my tech stack lines up. CodeIgniter (php), node.js, JRuby, AngularJS, socket.io, d3 & highcharts, memcached (reddis soon, I think). It's a good time to be a polyglot in the enterprise space.