Built on Expertise.

Our experts deliver innovative, sustainable solutions for a wide array of projects. Contact one of our practice leaders for more information.

A professional services firm is only as good as its people, and GPI employs many of the best in our industry.
Many of our executives and discipline managers have a long history with our organization, creating a stable leadership core to guide our long-term strategies and daily operations. Our leadership team works directly with clients to ensure they benefit from the full range of our capabilities within, and across, our practice areas of engineering, design, planning, and construction management.



Patrick Kenneally PE
p: (518) 898-9523

Vanessa Cifuentes SHRM-SCP
Human Resources
p: (631) 761-7317

Gregory Johnson, PE
Bridge Design and Construction Engineering & Inspection
p: (917) 886-6444

Lew Brode, PE, LEED AP
Building Systems Engineering
p: (240) 268-1822

Joe Nemmer, PE
Civil & Site Engineering
p: (716) 989-3330

Jonathan Hinkle PE
Environmental Sciences
p: (910) 250-5290

David Wagner, GISP
GIS & Asset Management
p: (908) 287-2731

Brian Mausert, PE
Highway Design
p: (908) 287-2695

Bill Orsinger, LS
Survey & Mapping
p: (443) 753-5555

Frank Wefering ENV SP
p: (631) 761-7209

Carolyn Radisch, AICP
Transportation Planning
p: (802) 359-7061

Mike Salatti, PE, PTOE
Traffic Engineering
p: (631) 761-7352

Sarah Olthof
Laboratory Services
p: (616) 608-0515

Paul Badr, CP, PLS, PPS, SP
p: (704) 251-8402