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.

Ian M. Stewart PE, Project Manager
Land Development

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Devin P. Espinosa PE, Project Manager
Land Development

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Bryan F. Aguirre PE, Project Manager
Land Development

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Mark D. Shelfer PE, Senior Project Manager
Land Development

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Daniel Sheehan, PE, Project Engineer
Land Development

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Shannon C. Watson PE, Senior Client Manager
Land Development

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

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

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Maria Ramirez, PE, Client Manager

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Michelle A. Troy, PE, Senior Project Manager
Permitting

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Greg Oetker, Senior Specialist Construction Inspector
Water Conveyance and Treatment

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

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Jordan Dunn, PE, Design Manager
Wastewater Collection and Treatment

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

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

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

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Colby Pali, Specialist Construction Inspector
Construction Management & Inspection

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Jonathan Nguyen, Permitting Specialist
Permitting

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Bradley Jenkins, PE, Senior Client Manager
Water District Services

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

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Anil Kumar, Senior Specialist Construction Inspector
Construction Management & Inspection

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

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Amy Stonaker, PE, Senior Engineer
Wastewater Collection and Treatment

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Alek Strimple, PE, Project Manager
Site Civil

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Jennifer Franklin, PE, Project Manager
Wastewater Collection and Treatment

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Justin Cadieux, PE, Project Manager
Site Civil

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Joseph York, PE, Land Development Manager
Land Development

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

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Justin Abshire, PE, Client Manager
Water District Services

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Wesley Lay, PE, Project Engineer
Water District Services

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Jeffrey Bishop, PE, Client Manager
Water District Services

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Camila Biaggi, ENV SP, CFM, Permit Specialist
Permitting

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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. ”

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

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Dale Vehlewald, PE, Senior Project Manager
Transportation

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Ryan Schilhab, PE, Project Engineer
Water District Services

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Rebecca Watkins, Client Manager
Water District Services

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Lisa Bonham, Client Manager
Water 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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Robert Dazey
Robert Dazey, PE, Manager
Water District Services

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Chad Walker
Chad A. Walker, PE, Client Manager
Water District Services

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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.”

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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!”

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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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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.”

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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.”

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Steve Barry, PE, Senior Engineer
Permitting

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

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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!"”

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Jeromy Chandler, RPLS, Department Manager
Surveying

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David Warner, PE, Senior Project Manager
Water Conveyance and Treatment

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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
Permitting

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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.”

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David Unger, PE, Senior Project Manager
Transportation

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Stephanie Kaspar, PE, Project Manager
Water Conveyance and Treatment

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Ryan Quinn, PE, Vice President
Land Development

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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.”

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Rex Hackett, RPLS, LSLS, Department Manager
Surveying

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Leo Shaw, Manager
Business Development

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Odalys Johnson, PE, CFM, Client Manager
Water District Services

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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.”

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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.”

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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!”

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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.”

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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.”

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Alan Chavez, PE, Electrical Engineer
Electrical, Instrumentation, and SCADA Development

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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 Conveyance and Treatment

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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, Instrumentation, and SCADA Development

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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, ENV SP
Water and Wastewater

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Colby Wright, PE, Manager
Traffic
“Culture is one of the main reasons I chose to work at Quiddity. It is a pleasure to work with such fun and interesting people!”

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Marty Hicks, RPLS, CFM, Deputy Practice Leader
Surveying
“Quiddity people are great to work with because they exemplify the core values of the company.”

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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!
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