Denys Mishunov is the Plone expert, specializing in Plone themes development since early 2004. During his Plone career, Denys worked as a freelancer with a lot of Plone consulting companies, distributed all over the world, and participated in more than 200 Plone projects by providing services in design and Plone themes development. Originally working as a freelancer in Ukraine, Denys has established one of the first Plone 3 projects in the world, Web Couturier, some days before the official release of Plone 3. The project doesn't exist in its original form any more, but has provided some, previously commercial, packages as open source products for the Plone Collective. In 2008, Denys moved to Norway to work with one of the leading Plone consulting companies Jarn (ex- Plone Solutions).
Steve McMahon is a Plone developer based in Davis, California. He's the creator of PloneFormGen, and is currently the maintainer for PloneHelpCenter and Plone's Unified Installer and the OS X Installer. He's serving his second term on the Plone Foundation Board of Directors.
Steve is a partner in Reid-McMahon, LLC, a Plone consultancy specializing in non-profits. He is one of the many authors of Practical Plone 3 (http://www.packtpub.com/practical-plone-3-beginners-guide-to-building-powerful-websites/book).