Custom Software Developer Home / Software Development / Maryland, USA / Rockville / 20850 / Serco Inc. Serco Inc. - Software Development services, Maryland, USA Serco Inc.Serco in North America - Software Development services, Maryland. Serco Inc., 2099 Gaither Rd, Rockville, MD 20850, 20850, USA(240) 778-1200http://www.serco-na.com Custom Software Developer Services offered in Maryland: Bespoke Software Development, Custom Software Development, Software Design, Application Development, Embedded Software Development, Business Software Solutions