Hey,
my name's Karol. I work as a programmer and I've been for a while on a Trello Community Slack. Although I don't use Trello on daily basis in our company we're building a time management app that we integrate with Trello.
Ability to ask some technical question from time to time and get an anwer from competent Trello staff proved to be pretty helpful and time saving ;-)
My favorite Trello tip? Use keyboard shortcuts. Stuff like 'show my cards only' available by pressing Q in board view make using Trello pleasent experience