Number of employees
50-69
Engineering Consulting Services. (ECS) is a group of six diverse consulting firms specializing in the related fields of geotechnical, environmental, and construction materials engineering.Founded in 1987, the six subsidiaries in the ECS group now employ a staff of more than 1000 people, including registered professional engineers and geologists, certified laboratory technicians and construction inspectors, field engineers and support personnel.Based in Chantilly, Virginia, ECS operates full-service branch offices in the Eastern, Midwest and Southern United States, ranging from Pennsylvania to Illinois and from Texas to Florida.