About | The Staff

Principals

Davis L. Dickerson PE
President

Mr. D. Dickerson is a registered Professional Engineer. He received his BS and MS degrees from the University of Mississippi in 1981 and 1983 respectively.

Prior to joining the DEI team, he was affiliated with Texas Instruments as a Research and Development Engineer. Mr. D. Dickerson joined DEI in 1985, was named to the Board of Directors in 1987, and appointed President in 2012.

His design background includes telecommunication systems, computer, municipal, educational and healthcare projects with particular expertise in data centers and uninterruptible power systems

As a principal of DEI, Mr. D. Dickerson shares in the supervision of all projects and is in responsible charge of project design, coordination, and preparation of construction documents.

Davis is registered in the following states:

Illinois New Hampshire
Alabama New Mexico
Arizona New York
Arkansas North Dakota
Connecticut Ohio
Delaware Oregon
Florida Pennsylvania
Hawaii Rhode Island
Idaho Tennessee
Kansas Texas
Kentucky Utah
Louisiana Vermont
Maryland Virginia
Minnesota Washington
Missouri Wisconsin
Nevada Wyoming

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Greg Doffin PE
Senior Associate

Mr. Doffin is a registered Professional Engineer in Illinois. He received his BS degree in Electrical Engineering from Purdue University in 1992. He joined the Dickerson Engineering team in 1994, was appointed a Senior Associate in 2005, and became a Principal in 2011.

He is in responsible charge of project design, preparation/ supervision of construction documents, project quotation, client consultation, and construction administration services.

Rick Sabatello PE
Vice President

Mr. Sabatello is a registered Professional Electrical Engineer. He received his BS degree in Electrical Engineering from the University of Mississippi in 1982. He joined DEI upon graduation, became a Principal in 2001, and appointed Vice President in 2012.

His background includes healthcare, retail, hotel, educational, and industrial/laboratory projects with particular expertise in fire alarm, infrastructure upgrades and hospital design.

As a Principal, he is in responsible charge of project design, coordination and preparation of construction documents.

Rick is registered in the following states:

Illinois Montana
California Nebraska
Colorado New Jersey
Georgia North Carolina
Indiana Oklahoma
Iowa South Carolina
Maine South Dakota
Massachusetts Washington DC
Michigan West Virginia
Mississippi

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Anthony “Jay” Tolbert PE
Director of Operations

Mr. Tolbert is a registered Professional Engineer in Illinois. He received his BS degrees in both Electrical Engineering and Computer Science from the University of Illinois (Urbana-Champaign) in 1987. He joined the DEI team upon graduation, was appointed Director of Operations in 1996, and became a Principal in 2001.

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Stephen Barnard LEED AP
Senior Associate

Mr. Barnard is a certified LEED professional. He joined the Dickerson Engineering team in 1988, was appointed a Senior Associate in 2003, and became a Principal in 2011.

Mr. Barnard supervises and manages project design, preparation/ supervision of construction documents, project quotation, client consultation, and construction administration services.

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Key Personnel

August Hernandez, PE
Electrical Engineer

Mr. Hernandez is a registered Professional Electrical Engineer in Illinois. He received his BS degree in Electrical Engineering from Old Dominion University in 2001. He joined the Dickerson Engineering team in 2001.

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Phillip Riewerts, PE
Electrical Engineer

Mr. Riewerts is a registered Professional Electrical Engineer in Wisconsin. He received his BS degree in Electrical Engineering Technology from Northern Illinois University in 2004. He joined the Dickerson Engineering team in 2004.
Eric Underwood, PE
Electrical Engineer

Mr. Underwood is a registered Professional Electrical Engineer in Illinois. He received his BS degree in Electrical Engineering from Purdue University in 2004 . He joined the Dickerson Engineering team in 2004.

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Alexander Tamayo, PE
Electrical Engineer

Mr. Tamayo is a registered Professional Electrical Engineer in Illinois. He received his BS degree in Electrical Engineering from University of Illinois at Chicago in 2006. He joined the Dickerson Engineering team in 2006.