KAYAK interview questions

Good team, horrible interview process! I went through 4 hours of interviews with the team and received all positive feedback. At the last step, they asked to spend a WHOLE day in the office, uncompensated, so that they could observe me working!? Despite the odd request, I provided them with plenty of dates and even offered to come in for a few hours on multiple dates. They ghosted me for a week and rejected me by email without even giving me a chance. Needless to say, I was disappointed with this complete waste and disrespect of my time.