Leadership with expertise, experience and integrity

SWSG is a professional corporation with architects, engineers, and managers having a diverse portfolio of project experience within the public and private sectors. Our people are our best asset. We have an exceptional staff of intelligent hard-working individuals with remarkable talent. Our principals promote a positive harmonious working environment that creates an atmosphere of teamwork and integrity. As specialists in providing high quality design and construction services, SWSG maintains long-term relationships with our clients.

  • Principals
  • Associates
  • Managers
  • Ramez Butros, P.E., MSCE, MBA


    Ramez Butros is President of SWSG. He oversees the overall administration and operations of SWSG and reports directly to the firm’s Board of Directors.

    Ramez is a distinguished leader with over 39 years of experience in A/E and PMCM work. Prior to SWSG, Ramez served as CEO, President, General Manager, Senior Vice President, Vice President and Global Director for large and midsize AEC companies since June 1984 where he diversified target markets & consolidated operations increasing revenues & profits multifold, developed client relationships & secured repeat business, grew operations for companies multifold, steered mergers, acquisitions & integrations, served on several prominent boards & committees in the U.S. & worldwide, led efforts to securing mega size dollar contracts for cumulative $100+ billion construction programs, managed global businesses with over $500 million in annual revenues, directed & led teams of more than 4000 executive & multi-disciplined professionals (all levels), started & developed new engineering offices & business lines into profit centers within short periods, planned, designed, managed & delivered multi-billion dollar award winning programs on time & within budget, and managed Public-Private Partnership (PPP) & Engineering Procurement Construction (EPC) programs.

    Ramez holds Bachelor and Master of Science degrees in Civil Engineering from Michigan State University and a two-year advanced Practical MBA Program certificate from Somerset CPAs Institute. Ramez is also a licensed Professional Engineer (P.E.) in several U.S. States.

  • Ray Shaffer, P.E., LEED AP

    Board Member

    Ray Shaffer is a Board Member of the firm. He is a structural engineer with over 55 years of progressive experience in engineering design, project management and construction administration and is a member of the Structural Engineers Association and Coalition of American Structural Engineers’ Metropolitan Washington Chapter.

    Prior to SWSG, Ray served as Structural Engineer, Project Manager, and Engineering Department Manager for major companies such as Armco, Inc. in Baltimore, Maryland, Bethlehem Steel Corporation in Sparrows, Maryland, Copperweld Corporation in Mansfield, Ohio, and Sprint in Reston, Virginia. He holds a Bachelor of Science degree in Civil & Structural Engineering from Johns Hopkins University and graduate studies in Engineering Administration at George Washington University.

  • Don Gray, P.E., LEED AP

    Board Member

    Don Gray is a Board Member of the firm. Don’s 50 years of engineering and project management experience covers a broad spectrum of civil/structural engineering practices. Don is a member of the Structural Engineers Association and Coalition of American Structural Engineers’ Metropolitan Washington Chapter and is a member of the American Concrete Institute. Prior to SWSG, Don served as Design and Project Engineer for Texaco in Houston, Texas, Ashland Oil in Ashland, Kentucky, Davy McKee Corporation in Lakeland, Florida, and Sprint in Reston, Virginia. He holds a Bachelor of Science degree in Civil Engineering from Virginia Tech.

  • Dave Sarver, P.E., LEED AP

    Board Member

    David Sarver is a Board Member of the firm with 40+ years of experience in the design and construction industries. Throughout the firm’s history, Dave has led the mechanical and electrical engineering departments and construction management division. Dave also served as program manager of various large programs for the firm and helped build relationships with several of the firm’s repeat clients. He holds a Bachelor of Science degree in Mechanical Engineering from Virginia Tech.

  • Gary Luzadder, RA, AIA

    Director of Architecture

    Education: Bachelor of Architecture from Virginia Polytechnic Institute and State University 

    Registrations: Architect registered in AL, CO, DE, DC, FL, GA, MD, MA, MI, MN, MO, NJ, OH, OK, OR, PA, SC, TX, UT, VA, WA & WV

    Professional Affiliations: American Institute of Architects; Northern Virginia Chapter of the American Institute of Architects; Virginia Society of the American Institute of Architects

    Gary Luzadder, R.A., A.I.A. has over 30 years of progressive experience in architectural design, project management and construction administration. His experience includes: client relations, site planning, feasibility studies, code analysis, design, specification writing, budgeting, cost control, office administration, and on and off site monitoring of construction. Gary has an excellent reputation for skillfully integrating designs for high-performance and mission critical buildings. His years of completed projects demonstrates his understanding and coordination of the interrelationships and interdependencies with all building systems.

  • Mike Robertson, P.E.

    Director of Design | Manager - Mechanical Engineering

    Education: Bachelor of Science in Mechanical Engineering from the University of West Virginia

    Registrations: Professional Engineer registered in AR, CA, CO, DC, FL, HI, MD, MA, MO, NV, OK, VA & WA; National Council of Engineering Examiners

    Mike Robertson is an Associate of SWSG. As Director of Design he oversees the administration of engineering and architectural services. Mike has been the Manager of the Mechanical Department for over twenty years. His twenty-nine years of progressive experience includes project management, construction administration and quality assurance in the public and private building industry. Mike’s project experience includes the design of HVAC, fire protection, plumbing, and fuel systems for government, recreational, and commercial buildings, historical sites, churches, schools, mission critical and telecommunications facilities.

  • Debbie Robison, LEED AP

    Program Manager

    Education: Bachelor of Science in Statistics from Virginia Polytechnic Institute and State University; Historic Preservation Certificate from Northern Virginia Community College, summa cum laude

    Registrations: LEED Accredited Professional

    Associations: Historic Centreville Society – Board Member; Historical Society of Fairfax County; Fairfax County History Commissioner for proposals other than Fairfax County

    Debbie Robison, LEED AP is an experienced and highly skilled project manager typically providing services for multi-discipline projects as it relates to local governments. She has managed open-end architectural/engineering task order contracts for Fairfax County, Prince William County, and the Town of Purcellville. Debbie Robison has been with SWSG for over thirteen years. Besides facility related projects, she is also the program manager for all SWSG historical preservation and restoration projects. She is responsible for historical preservation standards compliance research, and project production coordination. Debbie has been involved for many years in historical research for professional as well as for public benefit.

  • Charles Gornowich

    Director of Construction Management

    Education:  Study of Architecture / Northern Virginia Community College

    Associations:  United States Corp of Engineers, Quality Assurance/Quality Control

    Charlie Gornowich has over 25 years of progressive experience in the construction industry. He has been involved in many aspects of the construction industry including but not limited to Owner’s Representative, evaluating and hiring subs, scheduling and progress monitoring, permit expediting, contractor payment and change orders, site supervision and final inspection. Mr. Gornowich is a certified electrician, and has served as foreman, materials purchasing agent, construction and project manager for residential, commercial, telecommunications and government projects.

  • Paul Luoma, P.E.

    Manager – Electrical Engineering

    Education: Bachelor of Electrical Engineering from the University of Delaware

    Registrations: Professional Engineer registered in DC, FL, IL, MD, OK, VA & WA; National Council of Engineering Examiners

    Paul Luoma is an Associate of the Firm and the Manager of the Electrical Department. Paul has over 30 years of progressive experience including management, design, and construction responsibilities for numerous electrical installations on standard commercial buildings and high reliability mission critical facilities.

  • Zeena Al-Nasser, R.A., LEED A.P. (BD+C)

    Supervisor of Architecture

    Education: Bachelor of Architecture from the University of Jordan

    Registrations: Architect registered in VA; LEED Accredited Professional

    With over 25 years of experience, Zeena Al-Nasser, RA, LEED AP (BD+C) leads the design through all phases of a project: Proposal preparations, conceptual design, construction documents, building permits, and construction administration. Zeena’s expertise in the building codes, accessibility guidelines, and construction administration results in comprehensive documents that reduce issues or conflicts during construction.

    Zeena maintains her LEED AP certification and keeps abreast of the latest LEED technologies for application to SWSG projects. She also manages the company’s BIM/CADD Software, and provides Revit training to the staff to ensure staff proficiency with the latest design software.