Paul has extensive knowledge OPC, especially related to the Unified Architecture (UA) standard. He has been running DS Interoperability for 7 years; his client list includes Yokogawa, ABB, Unified Automation, Rovisys, Realtime Automation, and the OPC Foundation. He is an active participant of the OPC Foundation UA working group. He is an editor of multiple parts of the OPC UA standard. He is the technical lead on the MDIS OPC UA companion specification. Paul is a member of OPC Technical Advisory Council (TAC). He is Director of Compliance and Certification for the OPC Foundation and chair of the OPC Foundation Compliance Working Group. Paul previously worked for ABB in the Process Automation Division for more than 25 years in a variety of engineering roles including designing, constructing, and managing development of advanced control applications, operator interface systems, and historical systems.