From CDM website:

CDM is a full-service consulting, engineering, construction, and operations firm delivering exceptional service to public and private clients worldwide. Our complete suite of services spans from management consulting and architectural and geotechnical engineering, to design-build, construction management, and operations. Beyond the traditional services, CDM is also employing innovative technologies and approaches—such as 3-D/4-D design, sustainable development concepts, and complex alternative delivery mechanisms—to help our clients meet their challenging goals. More than one-stop shopping, client service at CDM means exceeding expectations by listening carefully to each unique concern, understanding project demands, and delivering a tailored solution.