Please keep these points in mind while going for an interview.
What is their interview scheduling process like?
A good clue as to the organization and professionalism of a company is how they schedule an interview with you. Do they give you enough notice so you can clear your schedule, or do they expect you to be available on a moment’s notice?
How are you received when you arrive?
When you arrive for the interview, what is your first impression? Is it warm and welcoming or cold and foreboding? Is there is a receptionist? If so, do they know to expect you or are they surprised by your presence? Are you offered a glass of water?
Do they respect your time?
It is never acceptable for a candidate to be late for an interview, but candidates should also take note of how well their time is respected. Of course, emergencies can happen, but if you are not greeted by the appointed start time of the interview, this could be a red flag
What types of questions do they ask?
Pay close attention to the questions that are asked in the interview, because these are almost always indicative of the problems the organization is having that they will want you to solve. Having problems is not in and of itself an issue, but depending on your skill set and tolerance, some may be right up your alley and some may leave you saying ‘thanks, but no thanks.’ For example, if they spend a lot of time asking how you respond to angry customers and critical supervisors, you can be sure this will be a part of your job, should you choose to accept it.
How are things left once the interview is over?
Are you given clear timelines and expectations or is it left vague and open-ended? Did you get the feeling they enjoyed meeting you or was the process cold and sterile?
While there is no way to know exactly what a company is like until you work there, these cues will give you a reasonably good idea of what to expect.