Meet our Principals
 

Greer J. (Pete) Pruitt, P.E., S.E
GREER J. “Pete” PRUITT, P.E., S.E.
President / CEO
Pete has over 35 years experience in the practice of structural engineering. He is one of the founding members of Pruitt Eberly Stone, Inc. formed in 1988. Pete has been an industry leader throughout his career by serving on numerous professional organizations such as AIA, SMPS, SEAOG, SERMC, GSPE, and ACGC. He currently serves as Principal-In-Charge on a number of high profile projects and leads the marketing and business development direction of the firm.
Robert M. Stone, P.E.
ROBERT M. STONE, P.E.
Principal / CFO
Bob has over 25 years of experience in project management, structural engineering design and consulting. He is the third founding partner of Pruitt Eberly Stone. Bob currently serves as Chief Financial Officer and is primarily responsible for the firm’s financial health and stability. He also oversees our Human Resources efforts and Administrative staff.
Michael B. Planer, P.E.
MICHAEL B. PLANER, P.E.
Principal / COO
Michael has over 20 years of experience in the structural design of all types of facilities. His expertise includes the design of structural systems requiring steel, masonry, timber, prestress concrete and reinforced concrete members with an emphasis on industrial developments and tilt up structures. Michael is responsible for the overall operations of the firm, ensuring that each project is staffed with the best professionals for the job.
Mark D. Hartle, P.E.
MARK D. HARTLE, P.E.
Principal / Studio Director
Mark has over 20 years experience in project management, structural design and consulting on commercial, residential institutional, municipal and government projects. His design experience encompasses mid-rise condominiums, hotels, apartments, schools, churches, medical facilities, financial institutions, retail, office and parking decks. Mark also leads the firm’s Quality Assurance / Quality Control program, helping the firm achieve a high level of quality and technical competency. 
Mark K. Willey
MARK K. WILLEY, P.E.
Principal / Director of Information Technology
Mark‘s experience as a Senior Project Manager includes over 15 years in the design of K-12 facilities, golf clubhouses, and religious facilities. His responsibilities also include keeping the firm on the leading edge of technology. Under Mark’s guidance and leadership, PES has adopted the use of Building Information Modeling (BIM) that is revolutionizing our industry. Mark has also helped numerous architectural practices begin to utilize BIM.
Travis R. Paul, P.E.
TRAVIS R. PAUL, P.E.
Principal / Studio Director
Travis currently serves as a Studio Director for various types of construction involving steel concrete, masonry and timber. His 15 years project experience includes structural design of award winning club houses, higher education and religious facilities. Travis is leading the standardization of the firm’s technical documents. He has developed many long lasting relationships with clients due to his commitment to quality work and personal service.
Stefan Keuller, P.E.
STEFAN KEULLER, P.E., LEED AP
Principal / Studio Director
Stefan is a Studio Director with 15 years project experience with a strong emphasis on industrial and manufacturing facilities.  As a Studio Director, he has developed relationships with many of the industry leaders such as Architects, Contractors and Developers in the Design-Build world. Stefan is also the sustainable voice of the firm and is a LEED Accredited Professional by the U.S. Green Building Council.