Car Mechanic? He was a Lead Architect for DB2, worked in various Lead/Architect roles on Microsoft SQL Server since SQL server 7.0, etc http://www.mvdirona.com/jrh/Work/default.htm
"Why Amazon Hired the Lead Architect for DB2 and SQL Server to Run Its Cloud Empire"
would instill much less confidence than the current one, consider how bad those products are compared to one that has proper architecture (i.e. PostgreSQL).