I'm not an HR person at all, but today I interviewed one candidate who applied for the role of senior embedded software engineer. Indeed, I'm an embedded software engineer, and for 50% of my time I work as R&D Manager of one of our products (I got promoted last month). "Manager" is an excessive word (everybody knows it), as it doesn't mean that I'm part of the management team, but it just means that I'm responsible for R&D of that product (translate requirements from sales, estimate the time needed for development [not doing any planning!], etc.). I worked in the company for almost 1.5 years, and I have in total more than 2 years of work experience (yes, I'm a "junior" guy). I mention these details because they might be useful later in this post.
Anyway, the director asked me to interview the candidate and talk to him about technical stuff, what he knows, if he can be a good fit, etc. It wasn't a really technical interview, but just one to get the first impression.
I think that the candidate is very good technically (we still have to verify it), with a lot of experience, but I'm not sure that his "behavior" matches ours. I think that our work environment is pretty funny and relaxed, while he seems to be the opposite (serious, individual worker, etc.). I'm not going into details about this, but one thing that annoyed me is that I asked him a question, he replied, then I wanted to talk about something else (enough time passed between his answer and me speaking again), but he basically talked over me. This happened 2 or 3 times in the same interview. He never apologized for it, while I was expecting something like: "oh sorry, I interrupted you".
I didn't say anything to him, but I reported it to the director and to another colleague. I asked to the director if the same thing happened to him while interviewing the same candidate, and he said it didn't.
So my other colleague brought up that this candidate's behavior might be a result from me not being in a leadership position in the company, which is actually true.
While I understand that it's weird that a junior guy interviews a senior one, I also think that this explains a lot about the behavior of the senior guy. I don't want to go into details about "lack of respect" or similar things, but I think that this might create problems if he is going to work here. Especially because, as I already said, I'm managing a product and that I will have to decide what has to be done, how the work should be done, and stuff like that (I'm not managing people!). I will not supervise anyone.
I must say that a previous employee had a similar behavior. I guess he didn't respect me, so when I told him what to do and HOW to do it, he did it in the opposite way. The director noticed it, and he got fired after not even 3 months. So I'm afraid of a similar situation.
EDIT: I asked the director to have another interview with him (if the other interviews with other colleagues go well, I will have it on technical matters anyway), so I will probably talk to him again. What I want to be sure of is that he is a right fit for the company, both technically and "behaviorally". About the latter, I'm looking for questions that I can ask him to assess his attitude, because all of I stated above might be because of his nervousness, stress, or other things. Also, I'm an inexperienced guy in the HR field.
Do you have any suggestions about questions I can ask, or do you think I gave too much weight to this particular behavior?