After contacting the CEO of the company, I had an initial in-person interview with him. He asked me if I am available the next day. I said yes; however, it was very difficult for me. I was traveling and had lots of stuff to complete, including my current job's tasks. On the evening of that day, they asked me to be at their company the day after at 8:30 am. For the main interview, they arranged a working session. There were other candidates too in a room. It was awkward. We were trying not to show our stress, but once one of their employees came in and told us: I know you are very stressed so I will leave you alone. That was the only thing we needed to hear to overcome our stress! The chair of the session was a good person, trying to make it as a teamwork, but since the other candidates were stressed and were competing, it was not easy to collaborate and expect a teamwork. It took 5 hours to work on a given task. It was professional of them that they paid us for the working session. I followed up with the company two times and the second time, they just told me we are evaluating other candidates as well. Never heard back after that. We can get a good insight from the working condition in a company through the way that they interview the candidates.