tl;dr Very unprofessional, spoke to 5 different recruiters throughout the process, online skill assessment is annoying
Went to a university career fair and wasn't too interested in the company at the time. A few months later a recruiter contacted me via e-mail and asked if I was interested in applying. After the application there was a non-technical interview where I reviewed my resume with a another recruiter. The following day they sent me the 'online assessment', which was incredibly difficult to set up (I had an online proctor, had to take everything off my desk, pan around my room 4 times, let them take over my pc to shut down background processes, install the proctor chat client, and the set up took about 90 minutes). On top of that, the assessment was very insulting as it included very, very, basic math and ridiculous brain teasers (I was very upset to see those on the assessment). It took about 3 (+90 mins of set up) hours to complete and I was aggravated by the entire thing. After the assessment, I had to take a personality test that was very contrived and poor. The following week yet another recruiter contacted me to say that they received my results and would get back to me in a one or two weeks. Two weeks went by and I hadn't heard anything so I asked the recruiter for an update.... no response, three weeks... no response, FOUR WEEKS... no response. During this period I was contacted by yet ANOTHER RECRUITER asking if I was interested in applying even though I was already a few weeks into the process (I told her that I was already in contact with another recruiter) and it made the impression that they were unorganized. The following week (almost 5 weeks from when she said "a week or two") I am contacted by yet another recruiter telling me I would not receive an offer. I asked for feedback but typically tech companies don't do that (unfortunately) and I asked for the score on my assessment but I doubt that I will ever hear from them again.
It was difficult for me not to use vulgar language above but the entire process was THE WORST INTERVIEW EXPERIENCE I've had. To give this statement some weight, I've had about a dozen interviews in the last year or so (not many but this one really stood out),