Here's a non-exhaustive list of the technologies I have bitten my teeth into over the past 3 - 4 years.
- NodeJS (and IoJS. I prefer IoJS for it's ease of ES6 access)
- Cloud-based computing.
I've been playing a lot with Vagrant and Bash recently. Dipping my toes in the whole virtual machine whatsit which is pretty interesting and useful when working from multiple machines.