Events & Symposium - Symposium - 2010 - Speakers

The 2010 International Rexx Symposium
11th - 4th December 2010
Amsterdam and Almere, The Netherlands

Sponsored by the Rexx Language Association


Speaker David Ashley - <wdashley (at)>
Credentials David is the project leader for the ooRexx Project. David has over 15 years experience with the Rexx language and writing external function packages for Rexx. He is the author of the OS/2 GammaTech Rexx Superset/2 product and many shareware and freeware packages.
In addition, David has extensive experience in the open source community and is the project leader for three SourceForge projects: Mod_Rexx, GTKRxDlg, and OS2Linux. David is also a developer on the OpenHPI project.

He has worked on projects using everything from embedded processors up to large IBM mainframes. He has over 20 years of software development experience using multiple architectures, development environments, tools, and operating systems. He works for IBM Lab Services as a System P consultant.

Speaker Jaap Brugman -
Credentials Jaap worked at the Dutch Central Bank as developer and department head for high volume banknote sorting machines. The operating system on these machines was home made for Honeywell minicomputers. Further as member of commitees in the National Payment System Project. Since the mid 1980 implemented RACF on the Central Banks mainframes as section head of Security Administration and Internal Audit on IT systems. Currently independant ICT Security Specialist. Familiar with various operating systems. Rexx is his popular interpreter in an IBM environment.

Speaker Rony Flatscher - <rony.flatscher (at)>
Credentials Rony works as a professor for Business informatics ("Wirtschaftsinformatik") at the Vienna University of Economics and Business Administration (Wirtschaftsuniversität Wien) and uses Open Object Rexx for teaching Business Administration and MIS students the object-oriented paradigm, as well as remote-controlling (automating) Windows and Windows end-user applications (e.g. MS Office, Open Office) as well as Java and Java applications.

Speaker Michiel van Hoorn - <michielvanhoorn (at)>
Credentials Michiel has a PhD in matehematics and worked for 25 years mostly as IT architect. He learned VM/CMS/Rexx in 1988 and used it as productivity tool on OS/2, NT, 2000, XP and Linux Ubuntu. Since 1996 he developed his personal toolkit "Orde!". At this moment he enjoys a sabattical, with plenty of time to develop Orde! further, to play string quartet and to work with his bees.

Speaker René Vincent Jansen - <rvjansen (at)>
Credentials René has used Rexx since it appeared in TSO Extensions in the second half of the eighties when he was a systems programmer at the Central Bank of The Netherlands. He is an independent consultant since the turn of the century, specializing in models and meta models in order to rationalize data governance and model driven development. He likes to program in any language as long as it's Rexx, preferably on an Apple system (because like Rexx, it just works). He plays rhythm guitar in the Scones, and in particular likes Fender Stratocasters.

Speaker Harris M. Morgenstern -
Credentials Harris Morgenstern works at IBM in the Systems &Technology Group, as a Software Developer for System z - Application Enablement. One of his tasks is presenting the System Rexx feature of z/OS to customer groups.

Speaker Thomas Schneider - <ths (at)>
Credentials Thomas is an IT-Consultant with practical experience in various programming languages like FORTRAN, COBOL, PL/I, REXX and NetRexx. He is the author of Rexx2Nrx, the classic REXX to NetRexx Converter (see, and DB-123, a tool for Database Transformation (for instance IBM DL/I to DB2, see
Speaker Robert John Wilson - <robert.john.wilson (at)>
Credentials Rob is an independent IT consultant who met Rexx at IBM working on the INFOMAN product. He is an ardent NetRexx and Java user for a number of years already, after a long career in Databases, Visual Basic and PHP.
Speaker Jon (Sahananda) Wolfers - <jon.wolfers (at) >
Credentials Jon met Rexx on CMS back in the 1980's whilst working for British Airways. He trained TPF programmers in the '"new" language. For the last nine years he has been developing & maintaining Retail Applications using Rexx on Windows for the trading arm of a small Charity using Personal Rexx & later Object Rexx.
If he had any spare time he would spend it meditating, playing the Guitar or the Piano.