O'Fallon, Illinois

Just as O'Fallon itself is an integral part of metropolitan St. Louis, the Burns & McDonnell office in O'Fallon is an integral part of our engineering presence in the St. Louis area and throughout downstate Illinois. From healthcare and laboratory facilities to aviation, infrastructure, environmental, construction and construction management, Burns & McDonnell-O'Fallon employee-owners are proud to serve their communities' needs.

Burns & McDonnell is honored to be named to the list again in 2019 — #8 among large companies: Best Places to Work in Illinois

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Want to know what makes Burns & McDonnell a great place to work? Great Rated!, the organization behind the rankings used by Fortune magazine, shares details about what our people say and do that puts us on the list. Read more

Client success is one of our driving principles, and so we’re proud to be a repeating recipient of PSMJ’s Premier Award for Client Satisfaction. Learn more about what that means