So off the top of my head…
Gearpunk Dynamics is almost entirely goblin. Run by a goblin. Mostly goblin leadership and membership too! Not criminal though.
Frostbite Contingent is led by a goblin and has lots of goblins in the upper management, but a fairly diverse collection of folks. They’re a mercenary company.
The Oyster Business is a criminal enterprise operating behind a front. I haven’t seen them as active lately, but that could totally be on me! However, I think they might be exactly what you’re looking for!
And of course I saved the best for last (obviously no bias here 
), but might I suggest Firebrand Enterprises? We don’t really market ourselves as goblin-centric, but we have quite a few- including the boss. We’re always hiring!
There’s also a couple of Goblin discords. Click the links to join.
And then there’s the Gadgezan Gazette, but you have to be invited there by a moderator I think. I believe Keelhaul runs that one, so you’d have to contact them!
Welcome to the server!