Missouri Office: (Click here for Map)
5030 Griffin Road
St. Louis, Missouri 63128
Phone: 314-487-6913
Fax: 314-843-1718

Illinois Office: (Click here for Map)
328 Bargraves Blvd., Suite B
Troy, Illinois 62294
Phone: 618-667-6610
Fax: 618-667-6653





Key Personnel

Mark A. Doering, P.E.; President

Mr. Doering has over 22 years’ experience as a civil engineer. He has been responsible for design calculations, planning and site design of public works, commercial and residential projects, specification writing, cost estimates, and document production for various civil engineering projects. As President of Doering Engineering, Inc. and Project Manager, he has been responsible for personnel supervision, project budgets, quality control, proposal preparation and client interface.
(Click here for Full Resume) or (PDF File)


Brian Rader

Mr. Rader has over 14 years’ experience in the Civil Engineering Field. His experience includes residential, commercial and transportation design and technical support. Mr. Rader is also advanced in various CAD programs and software including AutoCAD Land Development, Microstation and GeoPak.
(Click here for Full Resume) or (PDF File)


Neal J Niewald, P.L.S.

Extensive and diversified knowledge of the surveying profession; over 32 years’ experience in civil engineering, land planning and land surveying as a Survey Manager, Crew Chief and Civil Engineering Technician. Extensive background in providing supervision and guidance relating to management, policy matters and critical issues. Experience in supervising, coordinating and reviewing field and office work with field supervisors, survey crews and technicians/draftsmen. Responsible for day-to-day operations of survey-related projects, including coordination with field supervisors and survey designers regarding quality control and schedule completion.

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