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Meet Our Team

Paul C. O’Brien, PE, LEED AP ID+C

President, Senior Principal

Paul O’Brien oversees GHT’s delivery of high quality services from start to finish.  Through constant communication with clients and staff, he validates project goals and ensures the design of sustainable MEP engineering solutions that balance comfort, efficiency, and purpose. Paul is focused on continuing GHT’s legacy of providing excellent customer service and encouraging a culture of doing “whatever it takes” to meet client needs.

Paul’s 25 years of experience in designing high performance systems is supported by a strong understanding of the regulatory, legal, and financial aspects of the real estate market, making him a trusted partner in achieving project goals and maximizing real estate investments. A Professional Engineer registered in 14 states and the District of Columbia, as well as a LEED Accredited Professional, Paul graduated from Virginia Tech with a Bachelor of Science degree in Mechanical Engineering. He is a member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

  • Paul C. O'Brien
    Paul C. O'Brien
  • Sandra B. Wiygul
    Sandra B. Wiygul
  • William N. Gerke, Jr.
    William N. Gerke, Jr.
  • James A. Hansen
    James A. Hansen
  • Kristine Barr-Ouedraogo
    Kristine Barr-Ouedraogo
  • Sandra L. Conley
    Sandra L. Conley
  • Morty Zemedhun
    Morty Zemedhun
  • Ami M. Kelly
    Ami M. Kelly
  • Craig C. Eichenlaub
    Craig C. Eichenlaub
  • Jeffrey D. Salay
    Jeffrey D. Salay
  • Steven L. Wohlschlegel
    Steven L. Wohlschlegel
  • Frank J. Becker
    Frank J. Becker
  • James E. Cummings
    James E. Cummings
  • John C. McGee
    John C. McGee
  • Robert M. Menuet
    Robert M. Menuet
  • C. Rodney Simpson
    C. Rodney Simpson
  • James B. Cafferty
    James B. Cafferty
  • Richard J. Haun
    Richard J. Haun
  • Robert P. Patsel
    Robert P. Patsel
  • John D. Wozney
    John D. Wozney
  • Matthew P. Jacobs
    Matthew P. Jacobs
  • David B. Walker
    David B. Walker
  • Patrick A. Kunze
    Patrick A. Kunze
  • Donatien W. Norwood
    Donatien W. Norwood
  • Stephen A. Herrlein
    Stephen A. Herrlein
  • Raymond C. Smith
    Raymond C. Smith
Paul C. O'Brien

Recent Experience

  • 1301 Pennsylvania Avenue NW
  • U.S. Green Building Council (USGBC) Headquarters
  • American Society of Hematology (ASH) Headquarters