Your question is PostgreSQL for Reliability. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What experience do you have with PostgreSQL?
Answer with specific hands-on examples, covering schema and query operations, backups and recovery, upgrades, access control, performance troubleshooting, and production incident response. Explain the threats each security control mitigates and how you verified the controls worked.