Sarasota's Karins Engineering Group, Inc. recently promoted executive engineer John Bonacci and hired Thomas Hagood and Jerome DiMercurio. A director at Karins since 2004, Bonacci has been promoted to vice president of engineering; as a LEED-accredited professional, Bonacci will promote higher eco-friendly and sustainable standards for projects. Hagood joins the firm as vice president of design and business development; DiMercurio joins the company as its Sarasota engineering manager.