Maybe it just sounds that way to engineers then; I'm an engineer, and I read it the same way GP did. "on" is the preposition I'd use if I were describing the engineers as working on Github (as I just did right now)
I'm on Github and I'm also on Facebook, but I don't work for either of them, and I don't think either of those statements is in any way confusing. I think the confusion is due to the use of the term scaling. Github has 37 million users, so 'scaling' it by another 25k is kind of meaningless.
Having said that we know Microsoft owns Github. If the same article had come out in relation to Apple we'd immediately know what it was talking about without any confusion.
Sorry for any confusion! I originally intended this as an update to a previous post (years before we acquired GitHub) that had the title "From 20 to 2,000 engineers on GitHub: Azure, GitHub and our Open Source Portal", so was attempting to go for a good side-by-side comparison.
- Github is the platform/medium/support facilitating work - Github is the target/aim/focus of the work
E.g. 'Working on a table' means I could be making a table or I am using a table to work on something.