I did. Just beginning of 2023. I saw the post on Who is hiring thread, then I contacted the head of engineer (my current boss). After some rounds of interview, I accepted their offer. Good decision so far. The company is great.
I think research world has a lot of this kind of code. These projects are written by 1 or 2 and it is extremely hard to understand what really is under the hood.
https://github.com/tndoan/ISLR.jl