David Thomas is a senior database engineer with 12+ years specializing in open source PostgreSQL, cloud-managed databases, and training development. He has built and operated high-availability, replicated Postgres environments across AWS and on-prem systems, supported enterprise customers at AWS and Crunchy Data, and now leads database engineering at NISC. As a former Training Architect for A Cloud Guru, he translates complex operational topics into hands-on labs and courses—an unusual blend of deep ops experience and instructional design. His background spans migrations (Oracle→Postgres, Heroku/RDS→AWS), backup/restore automation with pgBackRest, and 24/7 monitoring stacks using Grafana and pg_monitor. Based in Mount Washington, KY, he pairs decades of Unix/sysadmin roots with PostgreSQL certification and a knack for making replication and performance tuning accessible to engineers.
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