I don’t think that having worked at Sun gives you much of a leg up on Triton (cloud platform). Running Triton does require specialized knowledge, but there are decent docs, IRC, and commercial support available.

Triton uses SmartOS as the operating system on compute nodes. Familiarity with Solaris/illumos is helpful at that layer. If you are Using it to run Linux VMs, the amount of Solaris wizardry needed should be minimal.