Chicago — DSI Holdings Corporation, the largest owner and operator of ServiceMaster franchises in the United States, has hired Michael Ganda as its new director of strategic marketing. His primary responsibility will be overseeing DSI’s web site and digital presence. “I am thrilled to welcome Michael Ganda into the DSI family,” says Jim Boccher, DSI’s president and CEO. “Michael has over 18 years of experience developing and executing digital marketing and business strategies. He has led billion-dollar companies in this capacity and his vision and skill set is exactly what …