Mark Sullivan is a Director of Cyber Security and Enterprise Architecture at Ellsworth Adhesives. Colleagues describe him as "Have used Mark Sullivan as a consultant volunteer and payed consultant in both the profit sector and NFP Character Education networking and web site connectivity . I describe him as having brilliant diagnostic skills , very intelligent , high ethical behavior , committed to profession family and the world community .I now of no one who can pass certification test with such ease and speed -- disarming to others .", "Mark transformed our out of date and poorly configured Windows 2008 server that regularly caused problems for end users. He maximised our use of an under-utilised second server to give us a fully virtualised environment with multiple Windows Server 2012 instances providing all of our network requirements, while adding remote desktop functionality for our students and staff desktops. This has significantly reduced our maintenance overhead and improved the predictability and reliability of our service for the end users all within a very reasonable hardware outlay. He also increased our capacity for classroom based IT usage by deployed a centrally managed, secure WiFi network. Working within the constraints of a developing country have presented many challenges to procuring and implementing a modern network environment but Mark has demonstrated excellent perseverance and problem solving to exceed our expectations. He has provided both on-site and remote support for his own work and also for any other issues we have encountered. Mark is extremely reliable and dependable and I would recommend him unreservedly to any institution needing his network skills.", and "Mark Sullivan is one of the most amazing engineers with which I have had the pleasure of working. He is dedicated to and conscientious of the quality of his work, and has proven himself time and again. I can recommend Mark in nearly any situation without hesitation."