GROTON — Charter Oak Federal Credit Union has promoted three employees to assistant vice president within the credit union’s electronic banking, information technology and risk management/ compliance departments.“I’m proud to announce these promotions of three very talented individuals who each have more than two decades of experience across many aspects of our business,” said Brian A. Orenstein, Charter Oak’s chief executive officer. “These promotions truly reflect their hard work and dedication to Charter Oak.”The following are the three newly promoted employees:• Waltnita Brown, assistant vice president-electronic banking. Brown, a Bradford resident, joined Charter Oak in September 1985. During her career, she has served as a teller, member service representative, branch supervisor, call center manager, research and development manager, data base analyst and, most recently, electronic banking manager.• Victoria Damaschi, assistant vice president-programming. Damaschi, a resident of Manchester, Conn., joined Charter Oak in April 1986. Her credit union experience includes serving as a teller, loan clerk, member service representative, training specialist and, most recently, data base analyst.• Ann Stavrou, assistant vice president- risk management. Stavrou, a Bozrah, Conn., resident, joined Charter Oak in July 1986. Her career at Charter Oak includes serving as a teller, loan processor, collections clerk, member service representative, work leader, training coordinator, call center manager and, most recently, risk management coordinator.Brown, Damaschi and Stavrou are located at Charter Oak’s headquarters, 32 Chicago Ave.