Key Personnel

Stephen J. Campbell, PE,SE
Principal, President
Dallas & San Antonio, Texas

A. J. Baysek, SE, PE
Principal, Executive Vice-President
Chicago & Naperville, Illinois

Byron B. Yeatts, PE
Associate Principal
Dallas, Texas

Matt J. Aquino, PE, SE
Associate Principal
Chicago, Illinois


Principal, Executive Vice President

Mr. Baysek is experienced in the design of low-rise, mid-rise, and high-rise office buildings, hotels, residential, mixed-use developments, parking structures, warehouses, and has extensive experience in the design-build project delivery method. He believes in "structural integrity at the lowest possible cost while at the same time fulfilling the desired architectural and aesthetic concepts" – the hallmark of Campbell & Associates.


With more than 25 years of experience, Mr. Baysek has expertise in the design and management of complex, large-scale projects. A former Executive Vice President and Director of Structural and Facility Engineering for A. Epstein and Sons International, Inc., one of Chicago’s largest architectural, engineering, and construction firms, he has participated in the design of a number of Chicago’s landmark projects. He served as the Director of Engineering for the McCormick Place Expansion project in Chicago.


1975, Master of Science, Architectural Engineering, University of Texas at Austin

1974, Bachelor of Science, Architectural Engineering, University of Texas at Austin


American Concrete Institute, American Institute of Steel Construction, American Society of Civil Engineers, Consulting Engineers Council, Structural Engineer Association of Texas, Structural Engineers Association of Illinois


Editor, “Matrix” - North East Texas Chapter, American Concrete Institute;

Board of Directors - North East Texas Chapter, American Concrete Institute;

President - Chicago Professional Members Committee, American Institute of Steel


AZ, AR, CO, CT, FL, GA, ID, IL, IN, ME, MD, MI, MN, MO, MS, NY, NV, NC, OH, OK, SC, TX, UT, VA, WA, District of Columbia, National Council of Engineering Examiners