FareHarbor Software Developer interview questions

The process started with a referral from my former colleague. Then there was a screening call with HR, after that 3 technical interviews (2 coding, 1 system design), then an interview with a hiring manager.

I got live coding exercise that was easy at the beginning, but got more complicated with time. It probably need some algorithms memorized. I rarely write tree based algos in my daily work, so that was no go. Interviewer looked like he didn't want to be there. No questions, no intro, straight to the code. Very distanced from the start.