Andreas Scherbaum is working with PostgreSQL since 1997. He is involved in several PostgreSQL related community projects, member of the Board of Directors of the European PostgreSQL User Group and also wrote a PostgreSQL book (in German). Since 2011 he is working for EMC/Greenplum/Pivotal and tackles very big databases.
Your company logo would look great here!
For great exposure to the PostgreSQL community in the SF Bay Area, see our sponsorship opportunities.