I was first contacted by a recruiter and the process took about a week. The interview process began with a half-hour phone screen with a developer. The following week, I had a face-to-face interview with the same developer and a manager. The face-to-face consisted of two sessions - one with each individual. I received positive feedback from the developer. He was friendly and welcoming. The meeting with him lasted about an hour and fifteen minutes. During this time, we spoke about my past experiences, and he asked a few in-depth technical questions and two whiteboard questions. He offered me a mini-bottle of water, which I accepted, and he left. Next up was the manager. Before he entered (it was a glass room), his expression should have cued me in as to what was about to happen. I was grilled with four whiteboard questions for two straight hours. He seemed upset. He never smiled. He spoke if he had to. My attempts at conversation or discussion of any kind (even with regard to the whiteboard problems) were greeted with nothing but negative energy, and answers which were either curt or snide. After answering his first question on binary search trees - one of the more challenging questions I've seen - he seemed to tire of me describing what I was doing given the limited board space, and simply erased my answer and moved on. He pounded away at his keyboard while I worked, pausing intermittently to ignore or partially respond to the comments I made about the code, or to point out holes in my logic. During this marathon session, I was not offered use of the bathroom, or asked if I needed to take a break or to have any more water. I was offered use of the bathroom as I left though. At the end of the whiteboard session, he rushed me through any questions I had for him. I reached out to the recruiter a week or so after the interview. After 3 hours, 15 minutes, and 6 whiteboard questions, the feedback I received from the recruiter was that the manager said he couldn't make a decision because I was the only candidate that interviewed. As a person of color, I have experienced various degrees of disrespect and negative attitudes on interviews. This was one of the worse experiences I have had.