SERES interview questions

Worst interview experience so far. First round with one of the senior engineers. The second round was a panel interview. The interviewers are not respectful to us interviewees. The offer is average but they mentioned expect working OT.

Got a call from headhunter for the position opening and interviewed on site within a week. totally 4 rounds, 1 round of HR screening, 2 rounds of technical stuff and the final round with the hiring manager