Mayor Carlo DeMaria Jr. recently named Robert Dionne as the city’s new director of human resources. Dionne, who is originally from Salem and now lives in Groveland, has 17 years of job experience in human resources, business management, and labor relations. Most recently, he worked for Cataldo Ambulance as director of business development and vice president of administration. He previously owned Northshore Ambulance before selling the business to Cataldo in 2008. Dionne has a bachelor’s degree in business and a master’s degree in business administration, both from Endicott College.