My experience consisted of 10 interviews and 1 presentation.

• Interview 1: Phone screening with HR – fairly standard.
• Interview 2: Phone interview with the I&T manager – fairly standard and enjoyable.

Then came the on-site interviews (1 presentation + 8 interviews in 1 day).

It started with the presentation of a past project of mine. Before I started, they told me that if they didn't think I was a fit after the presentation, I would go home without any further interviews. I thought this was really unprofessional and that they should have mentioned this beforehand.

The next 8 interviews were the same 30-minute interview over and over, just with different members of the team. They all asked the same questions to the point where I was incredibly tired of my own answers.

One note on HR: they don't get diversity. I was concerned about the "white boy culture" and asked about diversity efforts. She got really awkward on the phone and acted like she didn't know what I meant. She said everyone can be who they are, and people even wear shorts to work, as if wearing shorts to work is important. When I visited in person, it was clear why she avoided the topic – the workforce is a mirror image of a college frat.

After interviewing, I didn't hear back for two weeks and two follow-ups.

We had an issue with people installing batteries upside down.

How would you prevent this from happening?