I believe we should be able to do most of this kind of workflow with Crowdin or POEditor also. Our .po output will be stored on GitHub and our .mo files will probably be automatically generated from that and placed on our API servers.
We will definitely need to come up with a good strategy for pushing translation updates for multiple versions. We probably don’t want to push them every time a new string is translated, for example! It’d be good to discuss more of what you guys have already solved when we get to that 