Giving credits and visibility to technical contributors has also been brought up in https://lists.wikimedia.org/pipermail/wikitech-l/2016-May/085795.html - I've asked if there's a Phab task to not forget this topic.
Topic on User talk:CKoerner (WMF)/Notes from the first EMWCon
The Language team does that splendidly. See any of their monthly reports. Love how they even put the volunteers' names in bold.