Springfield-based Massachusetts Mutual Life Insurance Co. (MassMutual) has promoted three employees to senior vice president.

Michael R. McKenzie, has been promoted to senior vice president, retirement services operations, responsible for all recordkeeping processes and delivery of services for MassMutual’s Retirement Services division. McKenzie has oversight of the division’s new business implementation, ongoing account management, plan change processing, ERISA consulting services and its award-winning "Participant Information Center." He joined MassMutual in 2007.

Scott Reed will take on the title of senior vice president, U.S. insurance group business and technology solutions. Over the past three years under Reed’s leadership, the team has delivered a "robust and aggressive" strategic portfolio of initiatives to enhance the company’s business infrastructure and positioned it for future growth, according to a statement. Reed has been in his current role since 2008, and joined MassMutual in 2000.

Heather Smiley has been promoted to senior vice president, retirement services marketing. Her responsibilities include plan sponsor communication consulting services, advertising and public relations, web portals and tools, market research, competitive intelligence and employee communications. Under her leadership, MassMutual said it has received a record number of industry awards for its advertising and marketing programs to advisors, plan sponsors and participants. Smiley joined MassMutual in 2009.