executive team

Our Leadership

Lucious L. Williams
Chairman of the Board

Lucious has been a dedicated leader within public engineering consulting industry for more than 40 years. As founder of Dikita Enterprises, Inc., Lucious has been involved in all facets of the marketing, development, and administration of engineering projects. He has a wealth of valuable knowledge of local issues gained through his 27 years of business in the Dallas / Fort Worth Metroplex. He is active as an officer and member of numerous civic groups in the Metroplex and has assisted in the establishment and/or the progress of several local councils and chambers that have facilitated industry advancement and fostered minority business development.

Evalynn A. Williams
President & CEO

Evalynn, better known as “Eve”, has more than 37 years of experience in management and accounting with the firm. After serving 26 years as the company’s CFO before becoming the President and CEO in 2010, she has led the company to unprecedented heights. Following and guided by her father, the company has continued to grow and thrive in new markets and obtain larger notable projects. She has gained the trust of the clients, communities and her professional staff. Eve is very sensitive to growing her employees by training them well enough so they can leave but treating them well so they will not want to. Everyone who knows and works with her will declare that she will push you to be the best you can be. Her motto:  “in order to become great you must practice being great”. Give it 130%. She will continue to push the organization into utilizing new technology, venturing into new markets, and offering new services to current and new clients. In October 2020, she will become the first African American female to chair the Business Members Board of Governors at the American Public Transportation Association (APTA), a nonprofit international association of more than 1,500 public and private sector member organizations. 

Walter D. Dansby
Senior Vice President

Walter, senior vice president and distinguished education industry veteran of more than four decades, oversees the firm’s business development initiatives, marketing and program management. Walter is a conscientious leader and has served in many roles including – assistant principal, principal, executive director of instruction, coach, assistant superintendent, deputy superintendent of construction services and superintendent. He has 17 years of experience with K-12 bond program management, maintenance and construction and has directed more than $1.3B in bond-related programs. He works with an established bond team consisting of staff and program consultants who have knowledge and experience in managing, executing and facilitating design and construction projects. Walter has unprecedented ties to the community and serves on dozens of board and is committed to multiple industry organizations. In his pastime, he cherishes the time playing with his grandchildren. Also, perhaps as a potential close second to Jay Leno’s collection, he enjoys collecting antique cars.

David F. Tayyari, P.E., PMP
Vice President

David has over three decades of work experience in national and international project management, civil engineering, and construction administration services for government agencies, education authorities, and private site developers. David is adept in planning, civil engineering design, QA/QC, and construction services. His experience and knowledge encompass engineering and management of transportation, light rail, municipal, and site development projects. David is also environmentally conscious, holding certificates as an Accredited Professional in Leadership in Energy and Environmental Design (LEED AP BD+C), with a holistic approach to planning and design based on a framework for evaluating community, environmental, and economic benefits of infrastructure projects (ENVISION SP). He is a licensed professional engineer in the States of Texas and California and a certified floodplain manager (CFM). He enjoys spending time with his  wife and two sons; otherwise, his favorite pastime is learning new skills and having fun gardening.