DJ has been hacking on SAP enterprise software for more than three decades, and has a strong connection to the Open Source community too. He's contributed to the SAP, Perl, XMPP and Google developer communities and most recently has been sharing knowledge and code on SAP Fiori and SAP's UI5 toolkit. He was made an SAP Mentor in recognition of his contributions to the SAP Developer Network and community.
He's written two books for O'Reilly (Programming Jabber and Google Pocket Guide) and has contributed articles to sites as diverse as O'Reilly's OpenP2P, the SAP Community Network, Bluefin Solutions and his own blog where he's been writing since 2002.
He's spoken at conferences such as OSCON, JabberConf, FOSDEM, SAP Inside Track, SAP TechEd, SAP DKOM, SAP UK & Ireland User Group Conference, the Manchester Digital Laboratory and TEDx.
He teaches kids and teachers to code. He runs a CodeClub in his local village school, is a volunteer and organiser at Manchester CoderDojo, a STEMnet Ambassador and in 2013 year ran a centre in Manchester for Young Rewired State.
He is married to his theoretical childhood sweetheart Michelle, and has a son, Joseph, of whom he's very proud.