1. Look for someone who can give you their thoughts on the biggest opportunities and risks in PPC over the next year, two years.

2. Look for someone who can answer questions about recent (last month) developments on the major PPC platforms/software.

3. Look for someone who can give you very specific examples of what they have achieved in PPC both strategically and tactically in the last 2 years. Further this by asking them to break down how they came to their strategic and tactical decisions.

4. Follow up with any references they give. I know this sounds obvious but so many people don't do this.

5. Ask them about the project they are most proud of.

6. Ask them to tell you about their biggest PPC mistake.

7. Ask them to tell you about who's PPC ads they admire. Who do they study and think do PPC well.

8. Ask them what they want to achieve that they haven't achieved already.

9. Give them a practical test/brief. E.g. give them a scenario and then 20 minutes to come up with a top level strategy and 3 example PPC ads relevant to that scenario.

10. Be open with them about your goals for PPC, how it fits in with your own strategy and ask them to break down what they would be doing in the first month of working with you if they were hired.

These are just some example questions that should help you gauge their experience, interest and self-awareness and should give you a vision for what it would be like to work with them if they are to be appointed.

Good luck!