I love working at Quiddity because our work positively impacts the communities we live and work in. I’ve never been more excited about the direction of this company and what the future has in store.

Shawn Graham, PE, LEED AP, Manager | Site Civil

Quiddity is a success story in establishing itself as a respected engineering firm for water drew me to the corporation. I look forward to using my experience to help further the North Texas market and serve our clients and communities.

Mohammad Bayan, PE, Vice President | Water & Wastewater

Expertise of Our Team

Team Members

Quiddity is led by an executive management team whose credentials and experience have earned the company an industry-wide reputation for quality, dependability, and service. This is reinforced by the deep expertise of our leaders and the dedication and commitment of every employee.

Dale Vehlewald, Senior Project Manager
Transportation

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Ryan Schilhab, PE, Project Engineer
Water & Water District Services

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Rebecca Watkins, Client Manager
Municipal & District Services

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Lisa Bonham, Client Manager
Municipal & District Services

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Ryan Alcala, PE, Project Engineer
Land Development

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Alex Pfefferkorn, PE, CFM, Manager
Land Development

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Jeff Brindle, PE, CFM, Project Engineer
Hydrology & Hydraulics

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Matt Kainer, PE, Senior Project Manager
Program Management

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Giovanni Puccini, PE, PTOE, Senior Project Manager
Traffic & Transportation

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Hieu Nguyen
Hieu M. Nguyen, PE, PMP, Project Manager
Hydrology & Hydraulics

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Robert Dazey
Robert Dazey, PE, Manager
Water District Services

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Chad Walker
Chad A. Walker, PE, Client Manager

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Nathan Walton, PE, Construction Services Manager
Water

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David Cornyn, PE, CFM, Project Engineer
Hydrology & Hydraulics

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Steve Barry, PE, Senior Engineer
Waster Supply & Treatment

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Grady Turner, PE, Senior Project Manager
Water

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Jennifer Weaver, Senior Engagement Specialist
Recruiting

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Jeromy Chandler, RPLS, Department Manager
Surveying

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David Warner, PE, Senior Project Manager
Water

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Sherri McElwee, PE, Manager
Land Development

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Gao Lee, PE, CFM, Senior Engineer
Hydrology & Hydraulics

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Kristin Landry, PE, Senior Project Manager
Transportation

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Liz Garcia Stone, CPESC, MS4 Engineer
Water & Wastewater

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David Unger, PE, Senior Project Manager
Transportation

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Stephanie Kaspar, PE, Project Manager
Water & Wastewater

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Ryan Quinn, PE, Vice President
Land Development

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Rex Hackett, RPLS, LSLS, Department Manager
Surveying

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Leo Shaw, Manager
Business Development

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Steve Brown, PE, Senior Client Manager
Land Development

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Joseph York, PE, Project Manager
Site Civil

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Odalys Johnson, PE, CFM, Senior Project Manager
Hydrology & Hydraulics

Learn More About Odalys

Alan Chavez, PE, Electrical Engineer
Electrical

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Carlos Cotton, PE, RPLS, Chairman of the Board
Surveying

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Scott Saenger, PE, CFM, Vice President
Business Development

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Janet Baccus, PE, Manager
Land Development

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Gemsong Ryan, PE, LEED AP, Senior Client Manager
Site Civil

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Matthew Brazzel, RPLS, Manager
Surveying

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Nicolas Garcia, PE, Project Manager
Transportation

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Toby McQueary, PE, Manager
Water & Wastewater

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Larry Weppler, PE, Senior Construction Manager
Water & Wastewater

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J. Kent O’Brien, PE, Vice President
Transportation

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Chuck Troutt, PE, Senior Project Engineer
Electrical

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David Leslie, PE, Senior Project Manager
Urban Corridors

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James Johnson, RPLS, Regional Manager
Surveying

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Christopher Curtis, RPLS, Department Manager
Surveying

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Kyle Kaspar, PE, Manager
Water & Wastewater

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Kristen Hennings, PE, CFM, Senior Project Manager
Municipal Engineering

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Jeff Haeber, PE, CFM, Manager
Hydrology & Hydraulics

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Kyle Blank, PE, CFM, Vice President
Hydrology & Hydraulics

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Stephen Reiter, PE, Vice President
Hydrology & Hydraulics

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Michael Gurka, PE, Senior Project Manager
Water & Wastewater

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Brian Dobiyanski, PE, Project Manager
Urban Corridors

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Sean McMillan, PE, Vice President
Electrical

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Mark Holliday, PE, Vice President
Urban Corridors

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Bryan Roberts, Construction Services Manager
Water & Wastewater

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John Dreahn, PE, Manager
Land Development

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Martin Murdock, PE, Vice President
Municipal Engineering

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Drew Crow, PE, Vice President
Water & Wastewater

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Eduardo Martinez, RPLS, Department Manager
Surveying

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Gary Bowes, RPLS, LSLS, TxDOT Division Manager
Surveying

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Steven Jares, RPLS, CFM, Division Manager
Surveying

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Christopher Jousan, PE, Senior Manager
Site Civil

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Rob Erni, PE, Manager
Site Civil

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Adam Ray, PE, CFM, Project Manager
Hydrology & Hydraulics

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Stan Winter, AICP, Vice President
Land Planning

Learn more about Stan

Gary Rabalais, PE, Senior Vice President
Water & Wastewater

Learn more about Gary

Darren Willis, PE, Senior Vice President
Site Civil

Learn more about Darren

Bob Aylward, Chief Executive Officer & President

Learn More About Bob

Looking for Jones|Carter? We’ve rebranded to Quiddity Engineering!
Visit the Industry Insights section of our site to learn about this exciting change.
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