This is good but the punchline needs to be punchier.
I do like the implication that were working in the warehouse and not AWS but maybe it's too subtle.
You might also be able to do something with the surprise switch from Linux to Linus. In heaven code is reviewed on GitHub [...], in hell [...] a nd your code is reviewed by Linus.
I've heard that Amazon is a miserable place to work even if you're a software engineer.
The switcheroo idea sounds good.
My joke got more attention than I expected, given that it was just a quick first draft. I encourage everyone to improve on it, and share your version wherever you want, without attribution. Consider it a part of the public domain, just like the joke Carlin told.