The actual interviews were great. The salary negotiations were terrible.
They first requested my salary expectations, after extending a job offer (no salary specified). Based on the fact that my initial expectation was >10k higher than "what they had in mind", they decided to confer with their bosses to "see whether they can raise it a bit". The next day, they withdrew the offer without requesting input from me. They cited "differences in salary expectations" as the reason.
This just felt disingenuous and a waste of everyone's time. The lack of respect and communication during a salary "negotiation" was frustrating. Additonally, the offer that they had in mind was the same salary that undergrad interns were receiving.