Long time core team member of eXist (http://www.exist-db.org), and otherwise Scala and Java Consultant and XML specialist (XQuery, XSLT, XPath, XForms).

Open Source contributor to RocksDB Java (http://github.com/facebook/rocksdb).

Co-Author of the 'eXist' book for O'Reilly - http://shop.oreilly.com/product/0636920026525.do

I also sit on the W3C Working Groups for XQuery, and CSV on the Web as an invited expert.