I’m an XML specialist, doing things like consulting, designing and programming, strictly XML technology (like XSLT, XQuery, Schemas, Schematron, etc.). Before that I worked as a programmer and system architect, using languages like assembler, C, Visual Basic, PERL and several others.
Besides the technical side of things I also like communicating about it. I’m the author of two books: one about eXist-db (together with Adam Retter) and one about XProc 3.0. There are several articles I have written on https://www.xml.com.
More about me at http://www.xatapult.com.