Stearns will oversee CBRE's global finance and accounting organization, including tax, treasury, balance sheet management, financial planning and analytics and investor relations.

Zelin, who will be a managing director at C&W, joins from Eastdil Secured, where he was senior vice president.

With this promotion, DeMartino will oversee all development operations for the Greater Boston region, including land acquisitions, development, design, construction management, leasing and divestment.

Miami-based Flagler Global Logistics, an integrated, third-party logistics provider and real estate developer, already owns 500 acres of land that borders the Turnpike Transfer site, where it is developing Countyline Corporate Park.