The Stevens Technical Services Team

We believe in a strongly technical and diverse team environment that can evolve and adapt as clients find and begin to rely on Stevens Technical as a trusted source for quality engineering consulting services. Committed to innovation and creativity, Stevens Technical is always ready to meet the needs of its clients and the challenges of growth.

Roma G. Stevens, P.E., PTOE, RSP1


President and Founder Roma G. Stevens, P.E., PTOE RSP1 brings nearly 30 years of civil engineering experience in consulting, academic instruction and research. Starting out in structural engineering and serving as a professor for the first ten years of her career, Roma transitioned to transportation receiving a Master’s degree from Texas A&M University in 2005. Roma is a known expert in VISSIM Modeling and ITS Research Planning and Design. Roma is also considered a national expert in Hurricane Evacuation Modeling. Roma has managed and completed projects all over the world including for the FHWA, National Academy of Sciences, FEMA, Army Corp of Engineers, TxDOT, City of Houston, and HGAC.

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Charles R. Stevens Jr. P.E., PTOE

Principal – Traffic

Principal Charles R. Stevens Jr., P.E., PTOE brings nearly 20 years of civil engineering experience in consulting and research. As a consultant, Charles has extensive experience in traffic engineering studies and design working for clients including TxDOT, Harris County, City of Houston, and various municipalities. As a researcher, Charles became known for expertise in the areas of Transportation Systems Management and Operations (TSMO), Unmanned Aerial Systems (UAS), and Asset Management and has served as a principal investigator for the FHWA, USDOT, TxDOT, and HGAC.

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Ron Jenson, P.E., PTOE, PMP

Senior Traffic Engineer

Senior Traffic Engineer Ron Jenson, P.E., PTOE, PMP has over 25 years of experience in traffic engineering with a specialized focus on signal timing. Ron retired from Harris County in 2021 giving him expert local knowledge of Harris County, and has worked with nearly every public agency in the region on signal timing projects including TxDOT, METRO, City of Houston, and surrounding counties/cities.

Jennifer Kim, P.E.

Traffic Engineer

Traffic Engineer Jennifer Kim, P.E. has over 10 years of experience in traffic engineering and has served clients in both the public and private sectors including TxDOT, METRO, City of Houston, and Harris County. Mrs. Kim specializes in traffic signal design, traffic control, signal timing, and intersection/safety traffic studies.

Mahmud Bilaidi

Chief Designer

Chief Designer, Mahmud Bilaidi started his career over 20 years ago with the City of Fort Worth and the Dallas District of TxDOT.  Recently returning to Texas after three years of serving as Chief Engineer for Dubai UAE Roads & Transport Authority,  Mahmud will lead traffic & transportation design services within Stevens Technical.  Mahmud has extensive experience in traffic signalization, illumination, and signing and markings PS&E and Construction Management.  He has worked on projects for TxDOT Dallas, TxDOT Houston, City of Dallas, City of Houston, Harris County, Fort Bend County, City of Galveston, City of Bryan, City of Pearland, City of Pasadena, Baytown, League City and Round Rock to name a few.

Summer King

GIS Specialist

GIS Specialist Summer King, has over 20 years of experience in GIS, mapping, and data collection and analysis serving clients in both the public and private sectors. A proud graduate of Baylor University, Summer brings new perspective and ideas to the firm. Summer has used these skills on recent work including the San Antonio District 4-year Pavement Marking Plan and Houston District Large Signing Replacement Project.

Robert J. Steigleder

San Antonio Traffic Manager

San Antonio Traffic Manager Robert J. Steigleder, has over 15 years of experience in traffic engineering and construction with both public and private organizations. Recently as an employee of the TxDOT San Antonio District, Robert was charged with traffic engineering PS&E, studies, and review.  Robert is tasked with continuing to develop work in the San Antonio region with TxDOT, City of San Antonio, Bexar County, and surrounding agencies.

Meghan Calloway


Meghan is graduate of Sam Houston State University receiving a Bachelor of Arts in English.  Meghan provides expert technical writing support and aides staff members in their everyday activities.