Questions you can ask the interviewer:

How would you describe the responsibilities of the position?

How would you describe a typical week/day in this position?

Is this a new position? If not, what did the previous employee go on to do?

Who does this position report to? If I am offered the position, can I meet him/her?

How many people work in this office/department?

What are the prospects for growth and advancement?

What do you like about working here?

If I am extended a job offer, how soon would you like me to start?

When can I expect to hear from you?

Are there any other questions I can answer for you?

Why did you come to work here? What keeps you here?

How would you describe your ideal candidate?