My method: 1. Take a section of their C.V. 2. Ask about their strongest points in that section. 3. Then go deep on their strongest point. 4. Note their abil

My method: 1. Take a section of their C.V. 2. Ask about their strongest points in that section. 3. Then go deep on their strongest point. 4. Note their ability to follow your deep dive 5. Repeat this multiple times 6. Review notes: - The more sections they have where they can dive deep to a reasonable level the more senior they are. - The deeper they can go, the more difficult an actual problem in the prospective job can be that you can throw at them. So far, this gave me a very accurate picture of their skill set.