Robert Haas is a PostgreSQL major contributor and committer. PostgreSQL features which he has authored or coauthored include unlogged tables, fast-path locking, index-only scans, parallel query, and incremental backup. PostgreSQL features written by others which he has reviewed and committed include table partitioning, logical decoding, event triggers, and foreign tables. He works at EnterpriseDB as VP, Chief Database Scientist.
Prior to working at EnterpriseDB, Robert worked as a web application developer for almost 10 years. He first became interested in PostgreSQL development after running up against limitations of the PostgreSQL query optimizer during one of those jobs, specifically the inability of the optimizer to consider join removal.