The St. Louis Business Journal’s annual list St. Louis’ largest engineering firms has CEC ranked at No. 30.

Rankings are based on 2025 local engineering billings. Local is defined as St. Louis, St. Charles, Lincoln, Warren, Franklin and Jefferson counties and the city of St. Louis in Missouri; and St. Clair, Madison, Jersey, Clinton, Calhoun, Macoupin, Bond and Monroe counties in Illinois. 

Subscribers can read the full list here.