Historically companies I've been at have had someone on staff, but we're a small startup and looking to get some UX/UI support. All of my googling has lead me to "gig" websites like Upwork or Fiver and talking to friends in industry (granted salaried UX/UI folks) have lead me to Linkedin or Indeed. Neither feels like the right place for what we're looking for. Does anyone have an suggestions for finding freelance designers we could work with iteratively? Thanks!

Context: Our company is rolling our a new platform out to beta users and are looking to refine some of our platform's interface. Mainly we're hoping to polish up some of the more amateur design elements across the platform and get help designing layout for tools/data presentation. We have done a good amount customer research on what folks are looking for, will be getting active feedback after pushing the changes, and are hoping to iterate with said feedback.

I'm a software developer working with a small team, and our Google Drive folder tree of UI assets/illustrations/app icons/etc. is becoming increasingly difficult to deal with. Aside from proper versioning, symlinks would be a major plus. Both are kinda-sorta possible with GDrive, but not in a reliable way.

I'm happy to take on a reasonable amount of management myself, although the easier it is for the designers themselves to work with the software, the better. Paid solutions are fine, although open source would be preferable (even as a hosted service) to avoid vendor lock-in down the line.

My instinct is to go with git/GitHub on the basis that we're already deeply familiar with it from the dev side, the GitHub desktop app isn't too onerous for non-techies, and we're already paying for it. That said, I'd be very interested in anyone's real-world experience of git for multiple gigs of 10-200MB binary files. I've heard that it's not especially well suited, although that might be out of date knowledge?

Beyond that, I'm open to almost anything. I'm kind of surprised that I haven't been able to find a single "gold standard" piece of software here, in the way that git is for developers, but maybe I haven't been searching well enough? Any pointers in the right direction or stories of what has/hasn't worked for your teams would be a huge help!