Acco Engineered Systems has named long-time employee Jeffrey R. Marrs as its new chief executive. Marrs has been with the Glendale mechanical engineering firm for more than 30 years and replaces John Aversano, who remains as the chairman. As chief executive, Marrs will focus on the company’s growth goals to expand its market share, geographic presence, products, services and distribution agreements. “Our customers – who are involved with some of the most complex building and mechanical maintenance projects in today’s marketplace – will continue to see delivery of top-quality services and value,” Marrs said in a prepared statement. Projects the company has worked on include Tom Bradley International Terminal at Los Angeles International Airport, Wilshire Grand Center, Cedars-Sinai Advanced Health Sciences Pavilion and Google Headquarters in Mountain View. Marrs joined Acco in 1983 as a design engineer. Before his promotion, he had been president of the mechanical construction group. He has also served on the board of directors.