Is there a site/place where I can find plugin developers? I know there is a section here on the forums but the last 3 people I awarded projects to have all flaked out, which is a pain for anyone that runs a business on this platform.
I just need people that do plugins professionally, all paid jobs of course.
Not really, pretty much every skilled coder dumped vBulletin. But chances of getting those plugins coded depends on the complexity of the plugins you need. Just research a little more, and maybe there's some easier way (alternative) to get the function(s) on your site.
Most of them left it because vB3 development ended, and vB4 is still young. So who knows how will everything end. vB3 is good for those who want to have just a regular forum. But nowadays people are trying to compete with Facebook (lol!) so they switch to scripts like XenForo, hoping it'll boost their forum activity.