NTM Engineering, Inc.

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Jeffrey MacKay, MS, PE, CPESC

Jeff is the vice president of NTM’s Stormwater & Civil Site Division. He has over 25 years of engineering experience. His background features transportation and land development projects, with an emphasis on stormwater management, hydrologic and hydraulic (H&H) studies, and erosion and sediment (E&S) control. Jeff’s water resources experience includes a combination of research, instruction, and engineering. He has completed H&H studies for Pennsylvania and New York transportation projects and provides PennDOT training on water resources topics within the context of design manual procedures. He is also the author of PennDOT’s first comprehensive Stormwater Management Policy and assisted in developing PennDOT’s Drainage Manual. At NTM, Jeff designs stormwater and drainage systems, conducts and reviews H&H studies, prepares and reviews erosion and sediment control plans, prepares NPDES and waterway permits, and advises PennDOT’s Bureau of Project Delivery on related issues.

Jeff is a member of the Transportation Research Board Hydrology, Hydraulics, and Water Quality Committee and is the lead developer/instructor for the School of Professional Engineering Exam Review Course on water resources/environmental.

Jeff earned his BS and MS degrees in Civil Engineering from Drexel University. He holds professional engineering licenses in Pennsylvania, Maryland, and New York. He is also a Certified PennDOT Instructor and a Certified Professional in Erosion and Sediment Control.

NTM News

McNichol Joins Environmental Division

We are pleased to welcome Anthony (Tony) McNichol, MA, RPA as our new Senior Principal Investigator out of our Wayne office! Tony brings more than … [Read More]

Allison and Hunter Receive Promotions

NTM is excited to announce recent promotions for two of our staff members! Ian Allison recently earned his Professional Engineer (PE) license and … [Read More]

NTM Welcomes New Hires

We are pleased to welcome two new staff members to our Stormwater & Civil/Site Division! Katherine (Kat) Eimer joined NTM on June 22, 2026, as … [Read More]

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Bridge Engineer – Design/Inspection

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Cultural Resources Project Manager – Multiple Locations

NTM Engineering, Inc. is a civil engineering and environmental services firm that specializes in water... Read more →

NTM Engineering, Inc.
130 West Church Street, Suite 200
Dillsburg, PA 17019-1278
Phone: (717) 432-4425
Fax: (717) 432-4426

State College Office
341 Science Park Road, Suite 203
State College, PA 16803
Phone: (814) 862-9191

Wayne Office
1285 Drummers Lane
Suite 105
Wayne, PA 19087
Phone: (610) 605-3104

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