Apart from making games we also provide services in the QA field with bug tracking and localization/proofreading (pt-br) for games. This may or may not include beta testing, depending on you needs.
We work under very restrictive NDAs to assure that your content is safe and will not be leave our offices and yes, we’ve been doing this for a few years now :).
(dating back to 2012 to be more precise).
We currently use Bugzilla and JIRA issue/bug tracking systems, a few in-company solutions and spreadsheets, dealing with communication via e-mail and VoIP softwares. If that work-flow sounds like what you where looking for, well my friend, look no more!