Cullen leverages more than 15 years of technical expertise in energy efficiency and demand-side management, sustainability and resource management, mechanical system optimization, and controls and automation on Brendle Group’s energy and sustainability projects as our Sustainable Building Services Practice Lead. As a licensed Professional Engineer, Cullen collaborates with clients in the commercial, industrial, and healthcare sectors; K-12 and higher education sector; and with local, state, and federal governments. Cullen maintains active roles in professional engineering associations and local government advisory groups, and presents frequently at energy and sustainability conferences.