Lilker Associates, a New York City-based MEP and technology engineering firm, announced thatMartin Bowen, P.E., has been promoted to principal and associate department head of the Electrical Department;Steven Hammer, P.E., has been promoted to principal;Morais Miranda, RCDD, was promoted from director to principal of the Technology Solutions Group (TSG); andDavid Tannenbaumhas been promoted to senior associate and associate department head of the Mechanical Department.