Everyone and their mother knows it's best if people in a company all have a similar culture. Bizarrely, it’s possible to test roughly for this.

• Ask: what do you do?
• Ask: and why is that important?
• Ask: and why is that important?
• Ask: and why is that important?
• Ask: and why is that important?
• Ask: and why is that important?

The last answer will report culture. Some will say “to deliver shareholder value”, some will report “to make people happier”, some will report “so I can get paid” and so on. It’s a neat way of getting an answer on culture, and once you have that you can check whether everyone is aligned with each other, and whether they are aligned with the mission of the company.