Regina Obe and Leo Hsu
Regina and Leo are co-principals of Paragon Corporation, a web application and database consulting company. They use PostgreSQL and PostGIS extensively in their work.
They are co-authors of the Manning Books: PostGIS In Action (1st and upcoming 2nd Edition) and O'Reilly books (PostgreSQL: Up and Running 1st and upcoming 2nd edition).
Regina is a member of the PostGIS Project Steering committee and core development team.