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 Conveyance and Treatment

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.

Abdel Hamed, PE, Vice President

view DETAILS
Robert Thornton, Senior Project Manager
Environmental Division

view DETAILS
Ryan Ingram, Division Manager
Environmental Division

view DETAILS
David Kochalka, General Manager

view DETAILS
Ian M. Stewart, PE, Project Manager
Land Development

view DETAILS
Devin P. Espinosa, PE, Project Manager
Land Development

view DETAILS
Bryan F. Aguirre, PE, Project Manager
Land Development

view DETAILS
Mark D. Shelfer, PE, Senior Project Manager
Land Development

view DETAILS
Daniel Sheehan, PE, Project Engineer
Land Development

view DETAILS
Shannon C. Watson PE, Senior Client Manager
Land Development

view DETAILS
Shawn C. Sturhan, PE, Senior Project Manager
Land Development

view DETAILS
Kaci H. Schlachter, PE, Client Manager
Water District Services

view DETAILS
Maria Ramirez, PE, Client Manager

view DETAILS
Michelle A. Troy, PE, Senior Project Manager
Permitting

view DETAILS
Greg Oetker, Senior Specialist Construction Inspector
Water Conveyance and Treatment

view DETAILS
William R. Sagastizado, PE, Senior Project Manager
Wastewater Collection and Treatment

view DETAILS
Jordan Dunn, PE, Design Manager
Wastewater Collection and Treatment

view DETAILS
Ken V. Grafton, PE, CMM, Construction Services Manager
Construction Management & Inspection

view DETAILS
Cong V. Nguyen PE, Senior Electrical Engineer
Electrical, Instrumentation, and SCADA Development

view DETAILS
Nan Escalante, Senior Electrical Engineer
Electrical, Instrumentation, and SCADA Development

view DETAILS
Colby Pali, Specialist Construction Inspector
Construction Management & Inspection

view DETAILS
Jonathan Nguyen, Permitting Specialist
Permitting

view DETAILS
Bradley Jenkins, PE, Senior Client Manager
Water District Services

view DETAILS
Huy-Van Nguyen, PE, Senior Automation Specialist
Electrical, Instrumentation, and SCADA Development

view DETAILS
Anil Kumar, Senior Specialist Construction Inspector
Construction Management & Inspection

view DETAILS
Albert Lazcano, PE, Senior Construction Manager
Construction Management & Inspection

view DETAILS
Amy Stonaker, PE, Senior Engineer
Wastewater Collection and Treatment

view DETAILS
Alek Strimple, PE, Project Manager
Site Civil

view DETAILS
Jennifer Franklin, PE, Project Manager
Wastewater Collection and Treatment

view DETAILS
Justin Cadieux, PE, Project Manager
Site Civil

view DETAILS
Joseph York, PE, Land Development Manager
Land Development

view DETAILS
Alan Moon, PE, Senior Project Manager
Water Conveyance and Treatment

view DETAILS
Justin Abshire, PE, Client Manager
Water District Services

view DETAILS
Wesley Lay, PE, Project Engineer
Water District Services

view DETAILS
Jeffrey Bishop, PE, Client Manager
Water District Services

view DETAILS
Camila Biaggi, ENV SP, CFM, Permit Specialist
Permitting

view DETAILS
Pam Madrigal, PE, ENV SP, Senior Client Manager
Water District Services
“Quiddity’s culture and core values align with my own personal values and goals. Quiddity cares about the clients and communities we serve and is interesting in building long-term relationship and delivering quality engineering services. When you work for a firm in which the whole team is working together with the same goals in mind, you can really make a difference and it is truly rewarding. ”

view DETAILS
Jeff Moeller, PE, Vice President
Public Sector for Central Texas

view DETAILS
Dale Vehlewald, PE, Senior Project Manager
Transportation

Learn More About Dale
Ryan Schilhab, PE, Project Engineer
Water District Services

Learn More About Ryan
Lisa Bonham, Client Manager
Water District Services

Learn More About Lisa
Ryan Alcala, PE, Project Engineer
Land Development

Learn More About Ryan
Alex Pfefferkorn, PE, CFM, Manager
Land Development

Learn More About Alex
Jeff Brindle, PE, CFM, Project Engineer
Hydrology & Hydraulics

Learn More About Jeff
Matt Kainer, PE, Senior Project Manager
Program Management

Learn More About Matt
Giovanni Puccini, PE, PTOE, Senior Project Manager
Traffic & Transportation

Learn more about Giovanni

Robert Dazey
Robert Dazey, PE, Manager
Water District Services

Learn More About Robert
Chad Walker
Chad A. Walker, PE, Client Manager
Water District Services

Learn More About Chad

Steve Berckenhoff, PE, CFM, Senior Vice President
Public Sector Operations
“It’s exciting to see a Servant Leadership model embraced at all levels and in all corners of an organization.”

Learn more about Steve
Josh Lee, PE, Vice President
Water District Services
“Quiddity has allowed me to work on a wide variety of projects, challenged me to become a better engineer, allowed me to work alongside some of the smartest engineering minds in our industry, and has given me ample opportunities to advance in my career. I can truly say the amazing employees and the unique culture here at Quiddity is what has kept me committed to this great company for so many years!”

Learn More about Josh
Nathan Walton, PE, Construction Services Manager
Water

Learn more about Nathan
David Cornyn, PE, CFM, Project Engineer
Hydrology & Hydraulics

Learn More About David
Tanya Hobson, PE, Project Manager
Transportation
“The culture here is not only collaborative and flexible, but also provides a great balance between all my life’s demands. I am called to do, and be, so many things. Here at Quiddity, I don’t have choose to be one over another. I can be both – a disciple, wife, mom, engineer, helper, trainer, and the list goes on. Quiddity welcomes every part of who I am and it feels like home.”

Learn More About Tanya
Flossie Stiles, Business Development Manager
Business Development
“I feel very fortunate to be a part of a team that values customer satisfaction and long term relationships. Our employee and client communication protocol provides the best company culture and superior service to our clients.”

Learn More About Flossie
Steve Barry, PE, Senior Engineer
Permitting

Learn More About Steve

Grady Turner, PE, Senior Project Manager
Water Conveyance and Treatment

Learn More About Grady
Jennifer Weaver, Senior Engagement Specialist
Recruiting
“"Being part of Quiddity opens up opportunities for me to explore unconventional and fresh concepts every day. Collaborating with top-notch professionals and an exceptional team of recruiters inspires me. Management trusts my judgment, and they provide unwavering support. The flexibility they offer enables me to excel in my career without compromising on family and personal commitments!"”

Learn More About Jennifer
Jeromy Chandler, RPLS, Department Manager
Surveying

Learn More About Jeromy
David Warner, PE, Senior Project Manager
Water Conveyance and Treatment

Learn more about David
Sherri McElwee, PE, Manager
Land Development

Learn More About Sherri

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

Learn more about Gao
Kristin Landry, PE, Senior Project Manager
Transportation

Learn more about Kristin
Liz Garcia Stone, CPESC, MS4 Engineer
Permitting

Learn More About Liz
Joseph Reza, PE, Construction Manager
Hydrology & Hydraulics
“The culture here provides a work family that wants you to succeed, both personally and professionally. Your success is the company's success.”

Learn More About Joseph
David Unger, PE, Senior Project Manager
Transportation

Learn more about David
Stephanie Kaspar, PE, Project Manager
Water Conveyance and Treatment

Learn More About Stephanie

Ryan Quinn, PE, Vice President
Land Development

Learn More About Ryan

Mary Barton, Manager
Business Development
“When we say we’re focused on quality and service, it isn’t just lip service. I’m incredibly proud to be part of a company that truly fosters that service-minded culture and to work alongside so many individuals who strive to provide the highest levels of quality and service to our clients.”

Learn More About Mary
Rex Hackett, RPLS, LSLS, Department Manager
Surveying

Learn More About Rex
Leo Shaw, Manager
Business Development

Learn More About Leo
Odalys Johnson, PE, CFM, Client Manager
Water District Services

Learn More About Odalys

Nieves Alfaro, PE, PACP, LACP, MACP, Vice President
Wastewater Collection and Treatment
“Our commitment to helping everyone is ingrained with everyone at Quiddity. I see this everyday when working on a project or planning for our growth in new areas. Our people are our greatest asset.”

Learn More About Nieves

David Peek, PE, LEED, Land Development Manager
Land Development
“Quiddity provides the structure and benefits of a large company, but the flexibility and familiarity of a smaller, privately owned company, which is a big win for both clients and employees.”

Learn More About David
Adam Brumbaugh, PE, Land Development Manager
Land Development
“Quiddity’s culture inspires professional growth and cultivates an opportunity rich environment for high performers who embody our core values. This makes Quiddity an exciting place to build a career!”

Learn more about Adam
Jessica Dennis, PE, Manager
Site Civil
“Quiddity makes sure everyone in the company has the opportunity to grow and can see their meaningful impact to the company and society we serve.”

Learn More About Jessica
Don Durgin, PE, Manager of Transportation
Transportation
“We promise to deliver a quality product, on time, by someone who cares. Every day we work hard, do good, and have fun with it.”

Learn more about Don
Alan Chavez, PE, Electrical Engineer
Electrical, Instrumentation, and SCADA Development

Learn More About Alan
Carlos Cotton, PE, RPLS, Chairman of the Board
Surveying

Learn More About Carlos
Scott Saenger, PE, CFM, Vice President
Business Development

Learn More About Scott
Janet Baccus, PE, Manager
Land Development

Lean More About Janet

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

Learn More About Gemsong
Matthew Brazzel, RPLS, Manager
Surveying

Learn More About Matthew
Nicolas Garcia, PE, Project Manager
Transportation

Learn More About Nick

Toby McQueary, PE, Manager
Water Conveyance and Treatment

Learn More About Toby
Larry Weppler, PE, Senior Construction Manager
Water & Wastewater

Learn More About Larry
J. Kent O’Brien, PE, Vice President
Transportation

Learn More About Kent
Chuck Troutt, PE, Senior Project Engineer
Electrical, Instrumentation, and SCADA Development

Learn More About Chuck

David Leslie, PE, Senior Project Manager
Urban Corridors

Learn More About David
James Johnson, RPLS, Regional Manager
Surveying

Learn More About James

Christopher Curtis, RPLS, Department Manager
Surveying

Learn More About Christopher

Looking to apply for our Internship Program or a full-time EIT Position?
Visit the Build Your Career section of our site to learn more about joining our team!
This is default text for notification bar
Learn more