I'm on Famfrit, Maelstrom. Played a bunch this weekend. Got from rank 8 to almost 18.

However, queue times were hugely varied. At times, I would maybe wait 7-9 minutes, on up to over 30 plus minutes at it's longest.

I do not believe your job has anything to do with queues. I tried queueing as both DPS and healer during the long wait times, and it made absolutely no difference. Many times I would get in as summoner or bard and there wouldn't be a single healer in the group, and I would have to switch.