I applied through an employee referral. The process took 1 day. I interviewed at Ansys (Pittsburgh, PA) in Aug 2018
Interview
7 interviews in a day. The last one was a few minute chat with the recruiter. There was a lunch interview but it was just lunch. So there were 5 technical interviews and the questions included code reviews, algorithmic problems, brainteasers, C++ features. It's all in C++
Interview questions [1]
Question 1
I remember the one I screwed up answering was parsing a mathematic expression string and returning the answer. For instance (this was not the one I got asked but similar): "-5*2-(2-(1+3))/5+1.3 *2.2"