Here are some questions to ask to know what you're getting into.

1. Why is this position open?
2. What level of experience/ skill are you looking for in the person who fills this role?
3. What kind of training would be available?
4. What would my initial responsibilities on the job be?
5. What would a typical day look like in terms of projects, responsibilities, deadlines etc?
6. Can you tell me something about the team I would be working with?
7. What objectives would you like the person in this role to accomplish?
8. Is there a specific career progression path that I would have with your company?
9. What are some of the more difficult problems I might face in this role?
10. What resources would the person in this role have - in terms of support, budget etc.
11. What significant changes do you foresee in the company in the near future?
12. In what areas do you consider your company to have the greatest strength?
13. How would my performance be evaluated in this position?