John Ziemann is the Executive Vice President of Mollenberg-Betz, a mechanical contractor in Buffalo, NY, founded in 1910. With a focus on the mechanical piping side of operations, John works closely with industrial refrigeration and piping, plumbing, service, and more. He also plays a key role in strategic planning, manpower planning, estimating, and safety. Throughout his career, John has been involved in several high-profile projects, including the Buffalo Bills Stadium, the Lake Placid Olympic Ice Rink Refrigeration, and the Mt Van Hoevenberg Olympic Bobsled Ammonia Refrigeration Project. In addition to his role at Mollenberg-Betz, John is an active member of MCAA, serving on the MCAA Board of Directors and the Career Development Committee, acting as a first-round judge for the MCAA Student Competition.