Overall, the process was okay. The first phone interview was rescheduled twice on the part of the interviewer. I passed all the phone and on-site rounds. I got rejected after the final engineering manager round.

I'm convinced I was discriminated against because the interviewer did not express any discontent at any point in the interview with my solution; in fact, he said he thought it was good.

The recruiter divulged a lot of feedback after the rejection because he felt bad for me, probably too much on his part since he told me it was the manager's choice to reject and that he wasn't even entirely sure what the reason was, apart from a general "technical skills."

Delete a node from a linked list.

BFS on nodes in a matrix.

Return the deepest level of a string nested in parentheses.

Design Tic-Tac-Toe.

Manager interview was top K stocks.