2 Online assessments on Hackerrank. The first was purely data structures and algorithms, the second was a more OOP-focused one. If you've ever done the Headlands or Wolverine trading OA, it's similar to that. After that an HR screen which could have been an email. Then an interview with an engineer, mostly behavioral, about past projects. Finally was invited to the onsite. Thought it would be more involved but I was flown out to Chicago only to be in a room solving ANOTHER online assessment for 3 hours. It wasn't proctored or anything. Then we discussed the approach of the solution with the engineers, followed by a short behavioral. A week later I get the rejection email. Waste of a lot of my time.

two online assessments. First is two c++/c# questions in 120min. One of the questions was a BST implementation, other was find largest subsquare with black pixel borders. Second was 90min.