Took 5 months to go from first contact to rejection. During the on-site, I wasn't asked a single coding problem or design-a-system exercise. Instead, they would state problems they had internally at Twitter and ask me how I would approach them. The infrastructure problems they are trying to solve were entirely self made and a major misuse of infrastructure platforms/tooling. The general pattern was that when proposing new methods, they feigned ignorance and said "well unfortunately, that's the way we do things at Twitter and we aren't changing that". Few folks were receptive, but they weren't apart of the SRE team. Seems toxic.