I had an interview today for a job at a different company.
It's the first round of interviewing, I have yet to actually meet the hiring manager, but I will have 5 interviews with individuals that are part of his team.
I had 3 of those interviews today. Two of which went well, but the third, not so much as it was very different: the questions were very theoretical and the interview generally felt much more aggressive.
I have now realized that the third interviewer was someone who had applied for a role in our company before and didn't get the job. I was the hiring manager for that role and directly intereviewed him. While I can't confirm 100% if he was biased because of that, I think there's a decent chance i.e. maybe he doesn't want me joining and people finding out he was looking elsewhere, or maybe he just wasn't happy with how he didn't get the job.
Do you guys have any advice on how I could proceed in a situation like this? Could it be a conflict of interest type situation?
If so do you think I should mention in the next interview that I had previously interviewed one of the candidates or mention it to the hiring manager over email or mention it to the person who referred me to the job and knows the hiring manager or should I just leave it and do nothing for now?