IMG_4505 2

Structural Engineering Group, Inc. (SEG) is a design-led and design-build contractor team providing the best value solutions in design and construction for the public federal / state / local government and private facilities. Our services include design management, construction management, cost estimating, structural engineering and building envelope analysis. SEG's specialty services in concrete and masonry repair for historic buildings combined with multifaceted design and construction expertise allows our clients a single point of responsibility and cost-effective project delivery. 
Founded in 2005, SEG began as a structural engineering firm and in 2011 expanded our services combining engineering with construction to provide a turn-key solution for our clients. Throughout the years, SEG has been dedicated to the highest level of ethical conduct, professionalism and service to our clients. We strive to consistently fulfill a steadfast commitment to efficiency, singularity of responsibility, economy, timeliness and quality. 
SEG is a minority-owned, woman-owned, small business certified with the Small Business Administration, a Disadvantaged Business Enterprise (DBE) in the Commonwealth of Virginia and a Minority Business Enterprise (MBE) in the State of Maryland.


Danmei Gui, PE

President and Founder

As the founder and president, Danmei is responsible for setting the vision, strategy, operation structure of the entire organization, and oversees all aspects of SEG’s construction, engineering and financial operations.

Danmei is a licensed Structural Engineer with over 30 years of experience. She has led designs of numerous complex structures throughout her engineering career. Her innovative designs have been recognized among her customers and peers.

Danmei started SEG with a single employee in her home basement in 2005, and she has led SEG’s business growth from being just a structural engineering service to also offer design-build, general construction and structural repair services.  In the past 15 years, Danmei has been focusing on corporate operation, business development and client relationships.

Danmei is a member of American Concrete Institute, Society of American Military Engineers, Design-Build Institute of America, as well as BB & T Dulles Board Advisory.


Vice President of Engineering, Kaichen Zhang is responsible for leading, managing and mentoring a team of engineers in the planning and overall construction of all structural engineer work to ensure standards are maintained and exceeded.

Kaichen Zhang PE, SE is a Professional Engineer and Structural Engineer with over three decades of structural engineering experience. His expertise ranges from post−tension and pre−stressed concrete construction to all types of complex framing systems. Mr. Zhang has been an integral leader with SEG for over 14 years and a Structural Engineer for over 30 years. He is meticulous and efficient, ensuring each project gets completed above and beyond the project owners’ standards, on-time and on-budget.


His portfolio includes leading the structural designs of new buildings, existing building renovations and alterations in Federal, Regional, and Municipal facilities.

Kaichen Zhang, PE, SE

Vice-President of Engineering