Roel Hartman is a very experienced Oracle Software Architect. He started about twenty years ago using Oracle RDBMS 5, Oracle Forms 2.3, RPT/RP,F and Oracle*Case 4.5. Since a few years ago, he focuses mainly on Oracle Application Express.
Roel has been a speaker on UKOUG, OOW, Collaborate, Kscope, and a number of local Oracle users groups. He is an active participant of the Oracle APEX Forum and keeps an (APEX-related) blog at http://roelhartman.blogspot.com. In June 2009, Roel received an Oracle ACE award, and in August 2010 he was appointed as Oracle ACE Director. Roel is a co-writer of Expert Oracle Application Expres and the main author of Oracle Application Express for Mobile Web Applications. He is director at APEX Consulting in the Netherlands and member of the APEX Evangelists Network.