John Denniston Email & Phone Number
Senior Water Resource Engineer @ GPI / Greenman-Pedersen, Inc.
5 free lookup(s). No credit card required.
If you need more lookups,
subscriptions start at $34 USD/month.
John Denniston Location
- Odenton, MD, US
John Denniston Work
- Senior Water Resource Engineer @ (July 2025 - Present)
- Office of Environment - Program Manager, Water Quality @ (January 2018 - July 2025)
- Senior Project Engineer @ (May 2016 - January 2018)
- Project Manager @ (February 2005 - April 2016)
- Staff Engineer @ (January 2004 - January 2005)
- Project Manager @ Maryland State Highway Administration (January 1997 - January 2004)
- Engineer @ Maryland State Highway Administration (January 1993 - January 1997)
John Denniston Education
- Penn State University
Bachelor’s Degree (Civil Engineering)
1988-1993
John Denniston Skills
- Water Resource Management
- Drainage
- Road
- Project Management
- Environmental Permitting
- Construction
- Stormwater Management
- Civil Engineering
- Construction Management
- Environmental Awareness
- Environmental Monitoring
- Environmental Management Systems
- Water
- Environmental Compliance
- Transportation Engineering
- Highways
John Denniston Summary
- John Denniston, based in Odenton, MD, US, is currently a Senior Water Resource Engineer at GPI / Greenman-Pedersen, Inc.. John Denniston brings experience from previous roles at Maryland Department of Transportation, GPI / Greenman-Pedersen, Inc., McCormick Taylor, Inc. and URS Corporation, An AECOM Company. John Denniston holds a 1988 - 1993 Bachelor’s Degree in Civil Engineering @ Penn State University. With a robust skill set that includes Water Resource Management, Drainage, Road, Project Management, Environmental Permitting and more. John Denniston has 1 emails and 1 mobile phone numbers on RocketReach.
Looking for a different John Denniston?
Find contact details for 700 million professionals.
Top GPI / Greenman-Pedersen, Inc. Employees
Robert Kaplan
VP and Director - Business Development
Massapequa, NY, US
Lee Sheridan
General Counsel
New York, United States
Bob Hough
Chief Financial Officer
Lindenhurst, NY, US
John Rizzo
Vice President | Director of Building Engineering
Albany, NY, US
Dustin Evans
Vice President
Tallahassee, FL, US
Stephen Daiute
Executive Vice President and Branch Manager
Scranton, PA, US
Barry Benton
Executive Vice President
Houston, DE, US
David Smith
Senior Vice President
Olney, MD, US
Tom Lamb
Executive Vice President and Branch Manager
Suffern, NY, US
G2 Crowd Trusted
300K+ Plugin Users
© 2026 RocketReach.co