Public engineering firm directory

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Ceed Civil Engineering

Vienna, VA

Licensed Civil & Structural Engineers | Nationwide Engineering Services

WebsitePhone5 officesUpdated Jun 2026

Service detail: Site Planning

Service: Site PlanningService: Standard Site PlansService: Grading PlansIndustry: ResidentialIndustry: CommercialType: Civil Engineering+21 more

Dulles Geotechnical and Materials Testing Services, Inc.

Chantilly, VA

Geotechnical engineering, construction inspection, materials testing, and software solutions

WebsitePhone4 offices10 projects7 credentialsFounded 2012Size Estimate: 70+ employees

Project: I-495 Express Lanes Northern Extension (I-495 NEXT)

Service: Geotechnical EngineeringService: Engineering Analysis and DesignService: Foundation DesignIndustry: Highways & RoadsIndustry: TransitType: Geotechnical Engineering+36 more

Green Expert Technology Inc.

Haddonfield, NJ

Helping Clients Reach Their Mission. Helping Employees Reach Their Goals.

WebsitePhone6 offices5 projects6 leaders6 credentialsUpdated Jun 2026

Project: Support for US Navy Machinery Control Systems on DDG 51 Class Ships

Service: Systems EngineeringService: Integrated Bridge & Navigation SystemsService: Steering & Ship Control SystemsIndustry: DefenseIndustry: FederalType: Defense Engineering+26 more

Isys Incorporated

Littleton, CO

Delivering Technology and Engineering Services to Government Customers

WebsitePhone3 offices3 projects1 leaders14 credentialsFounded 2002

Project: COOL-R Program Support

Service: CybersecurityService: Vulnerability Assessments & Risk MitigationService: Compliance & Security IntegrationIndustry: SpaceIndustry: DefenseType: Software Engineering+16 more

Linear Labs Llc

Washington, DC

Linear Labs offers electrical engineering services for its customers; from full development cycles to piecewise engineering support for large concurrent efforts. Specializing in science based ground and space flight applications as well as high reliability avionics. Adaptable development process to meet the needs of your project, risk category, and objectives.

Website1 officeUpdated Jun 2026

Service detail: System Engineering

Service: System EngineeringService: System ArchitectureService: Electronics DesignIndustry: CommercialIndustry: DefenseType: Electrical Engineering+13 more

Prime Partners Engineering LLC

Washington, DC

Providing engineering and project management solutions with big goals

Website3 offices2 leaders2 credentialsFounded 2019Updated Jun 2026

Service detail: Power & Utility Engineering

Service: Power & Utility EngineeringService: Distribution EngineeringService: Transmission EngineeringIndustry: UtilitiesIndustry: Electric UtilitiesType: Owner's Engineer+16 more

Saalex Corporation

Washington, DC

Information Engineering & Technologies

Website5 offices3 projects8 leaders7 credentialsFounded 1999Updated Jun 2026

Project: TARIF IPT Contractor Support Services

Service: Engineering Support ServicesService: Systems EngineeringService: Test and Evaluation SupportIndustry: AerospaceIndustry: DefenseType: Defense Engineering+22 more

Sellers & Associates, LLC

Chesapeake, VA

Adding Value, Reducing Risk

WebsitePhone4 offices8 leaders9 credentialsFounded 2015Updated Jun 2026

Service detail: Program & Project Management

Service: Program & Project ManagementService: Training & Training TechnologyService: Integrated Logistics SupportIndustry: GovernmentIndustry: FederalType: Defense Engineering+23 more

Stone Security Engineering, PC

New York, NY

Applied Knowledge

WebsitePhone3 offices3 leaders4 credentials3 publicationsSize Estimate: 1-50 employees

Service detail: Consulting and Design

Service: Consulting and DesignService: Security Design AnalysisService: Planning and Master PlanningIndustry: CommercialIndustry: GovernmentType: Structural Engineering+25 more

Systems Planning and Analysis, Inc.

Washington, DC

Objective. Responsive. Trusted.

Website3 offices7 projects2 leaders1 credentialsSize Estimate: 500-1,000 employeesUpdated Jun 2026

Project: Columbia-class SSBN Technology Development

Service: Strategic Analysis and Force DesignService: Force Structure DevelopmentService: Requirements DefinitionIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+37 more