Jason Shepherd is a technical support engineer working for Red Hat in Australia. He's helped countless users with Jboss problems, and has experience with more types of problems with Jboss than you can imagine. Before working for Red Hat he worked as a Java developer writing web applications, and web service implementations for a major travel company. He has first hand experience with enterprise application development in real-life situations.
He works at Red Hat, which is a company that packages and tests an Enterprise version of JBoss called Enterprise Application Platform (EAP). They provide support for production systems, as well as development projects utilizing EAP, and they actively research and fix security issues related to JBoss. If your income depends on your JBoss environment, you should purchase a subscription for EAP from Red Hat, so that you know you're running the best, most secure enterprise bits available. On top of that you'll have someone to turn to when problems seem insurmountable.
Jason maintains a blog at http://jasonshepherd.net; take a look to stay in touch with what he's doing. Alternatively you can follow Jason on Twitter at @jazinner.