I'm a self-employed Grails core contributor (more ideas than code these days) and a very active author of many Grails plugins including Resources, Email Confirmation, Feeds, Taxonomy, Platform Core and Platform UI. You'll struggle to find someone more enthusiast about the Grails framework! I'm also a founder of NoticeLocal.com and I've been doing professional programming and product development since 1990.
I have been using Grails for commercial sites since almost the beginning (Grails 0.4) and have spoken at several conferences about Grails and plugin topics over the last 5 years.
I love helping people to get the most out of Grails, whether its a quick fix or longer term consulting.