Founded in 1980, SDSE, also known as Stedman & Dyson Structural Engineers, is one of the leading engineering firms in California. It maintains a staff of engineers, drafters, design professionals and technical interns. The firm specializes in structural site assessment and design services. SDSE offers value engineering, quality assurance and design-build services. It offers code compliance, historic preservation and seismic analysis services. The firm additionally provides anti-terrorism, progressive collapse prevention and retrofit services. It also conducts structural feasibility and constructability studies. The firm serves various corporations, nonprofit organizations, educational institutions, municipalities, and military and government agencies. Its projects include the UCSD Medical Center Hillcrest, Marriott Hotel and St. Vincent de Paul Church. SDSE is located in San Diego.