McMillen Engineering is a full service civil engineering and land surveying firm located in the Fayette County Business Park in Uniontown, Pennsylvania.  

Our professional staff of engineers, surveyors, technicians and support personnel has served the needs of public and private sector clientele since 1977.


"Mr. McMillen revolutionizes the way his team works with his customers.  [They] help to create a collaborative environment to ensure that the finished product is impeccable.  We are proud that he has won the Champions of Learning Award in the category of Business Partnerships for his work with the students of Brownsville Area High School on the Snowden Square project,

"Operation Falcon Revitalization."

—  Kelli Dellarose, Brownsville Area High School


Corporate Officers Announced

May 15, 2020

The Board of Directors of McMillen Engineering, Inc. named Terry McMillen, Jr, P.L.S. as President and James Stanton, P.E. as Vice President of the company during their April 2020 meeting.

PSLS Names 2020 Officers

January 24, 2020

Terry McMillen, Jr. was among those named as 2020 Officers of the Pennsylvania Society of Land Surveyors during their annual meeting last week. Terry will serve as the Vice President of the organization.

Terry McMillen, Sr. Speaks at Penn State Fayette

September 23, 2019

Terry E. McMillen Sr., founder and president of McMillen Engineering, delivered the first installment of the Fayette Speaker Series at Penn State Fayette, The Eberly Campus on Sept. 18.

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115 Wayland Smith Drive, Uniontown, PA 15401



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