Public engineering firm directory

Find engineering consulting firms by capability and location.

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AE Works

Sewickley, PA

We Make Building Projects a Better Value

WebsitePhone2 offices15 projects1 leaders23 credentials3 publications

Project: Bay Pines VA Medical Center, Electronic Health Records Modernization

Service: Architecture & Interior DesignService: Programming and Test FitsService: Master Planning and Space ConsolidationIndustry: CommercialIndustry: Multifamily ResidentialType: Architecture & Engineering+46 more

Appendix R Solutions Inc

Hanover, VA

Providing unique multi-disciplinary engineering solutions

WebsitePhone1 office1 projectsFounded 2000Updated Jun 2026

Project: Post-Fukushima Safe Shutdown and Restart Support

Service: Fire Protection EngineeringService: Fire ModelingService: Classical Fire ProtectionIndustry: NuclearIndustry: Power GenerationType: Fire Protection Engineering+25 more

Awen Solutions Group LLC

Alexandria, VA

Planning, Architecture, and Engineering for America's Veteran Healthcare System

Website1 office13 projects11 leadersFounded 2018Size Estimate: 60+ employeesUpdated Jun 2026

Project: Boise Dental Clinic

Service: Strategic & Capital Asset PlanningService: Facility Master PlanningService: Capital Investment PlanningIndustry: HealthcareIndustry: FederalType: Architecture & Engineering+13 more

Compass Rose Consultants LLC

Arlington, VA

Charting True North in Engineering

WebsitePhone1 office1 leaders1 credentialsSize Estimate: 1-4 employeesUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC DesignService: Plumbing System DesignIndustry: FederalIndustry: GovernmentType: Mechanical Engineering+28 more

Dadson Consulting Inc

Woodbridge, VA

Dedication and Experience

WebsitePhone1 office18 projects2 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: AWI South Capitol Street Corridor Bridges

Service: Bridge and Transportation StructuresService: Steel and Concrete Bridge DesignService: Foundation Analysis and DesignIndustry: BridgesIndustry: TransportationType: Structural Engineering+27 more

Dominion Due Diligence Group

Midlothian, VA

Navigating pathways to affordable, available, and resilient housing through expert environmental, engineering, and energy due diligence.

WebsitePhone3 offices2 projects11 leaders1 credentialsFounded 1994

Project: Transforming Affordable Housing in Virginia: A RAD/LIHTC Renovation

Service: Environmental Due Diligence & ComplianceService: Phase I & II Environmental Site AssessmentsService: HEROS Environmental ReviewsIndustry: Affordable HousingIndustry: Multifamily ResidentialType: Environmental Engineering+31 more

Fuchs Consulting, Inc.

Leesburg, VA

Advanced nondestructive evaluation and laser metrology for critical infrastructure

WebsitePhone1 officeUpdated Jun 2026

Service detail: Structural Nondestructive Evaluation

Service: Structural Nondestructive EvaluationService: Infrared Bridge Deck and Soffit InspectionService: Steel Bridge Weld Stress MeasurementIndustry: TransportationIndustry: BridgesType: Civil Engineering+15 more

Guzman & Griffin Technologies, Inc.

Alexandria, VA

Maintaining the safety and efficiency of the National Airspace System

WebsitePhone1 office3 projects4 leadersFounded 1997Size Estimate: 50-199 employees

Project: Surface and Airborne Safety Metrics Automation

Service: Systems & Software EngineeringService: Software Development & Systems IntegrationService: Independent Verification & Validation (IV&V)Industry: AviationIndustry: FederalType: Aviation Engineering+17 more

Jerico Technologies LLC

Fredericksburg, VA

Alternative Energy, Sensors, and Communication Systems

Website1 officeFounded 2021Updated Jun 2026

Service detail: Systems Engineering and Technical Advisory

Service: Systems Engineering and Technical AdvisoryService: Requirements Traceability and ManagementService: System Architecture DesignIndustry: DefenseIndustry: Environmental & RemediationType: Electrical Engineering+23 more

McGill Associates, PA

Asheville, NC

Shaping Communities Together

WebsitePhone8 offices9 projects1 leaders3 credentialsFounded 1984

Project: Mission Tower North

Service: Water & WastewaterService: Water Source and TreatmentService: Water DistributionIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+74 more

Planet Defense LLC

Fairfax, VA

Digital transformation, cybersecurity, and smart city solutions for government and commercial clients worldwide.

WebsitePhone1 office4 projects1 leadersUpdated Jun 2026

Project: Virginia Smart Community Testbed

Service: CybersecurityService: Risk and Vulnerability AssessmentsService: Industrial Control Systems SecurityIndustry: FederalIndustry: GovernmentType: Software Engineering+67 more

Ready 3 LLC

Oklahoma City, OK

Your Success | Our Mission

WebsitePhone12 offices7 projectsUpdated Jun 2026

Project: F-35 Readiness Directorate Support

Service: Sustainment SupportService: Functional & Direct Programmatic SupportService: Product & Life Cycle PlanningIndustry: DefenseIndustry: FederalType: Defense Engineering+33 more

Soil Consultants Engineering, LLC

Manassas, VA

Geotechnical Engineering | Inspections | Material Testing | Environmental Compliance

WebsitePhone1 office1 projects1 credentialsFounded 1960Size Estimate: 10-60 employees

Project: Vint Hill Data Center - OVH Cloud

Service: Geotechnical EngineeringService: Subsurface InvestigationService: Soil AnalysisIndustry: Data CentersIndustry: GovernmentType: Geotechnical Engineering+20 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

T3 Design Corporation

Fairfax, VA

T3 Design Corporation is a Fairfax, Virginia-based transportation engineering practice founded in 2006. It specializes in transportation planning, traffic engineering, roadway design, intelligent transportation systems, and operations program management, serving state departments of transportation, regional transit authorities, and local jurisdictions throughout the Mid-Atlantic region.

WebsitePhone1 office6 projects5 leaders5 credentialsFounded 2006

Project: I-395 General Engineering Consultant (GEC) Transportation Management Plan Project

Service: Transportation PlanningService: Traffic Impact AnalysisService: Traffic ForecastingIndustry: GovernmentIndustry: TransportationType: Transportation Engineering+26 more

WES Consulting LLC

Prince William, VA

Engineering and Construction Management Services

WebsitePhone1 office1 projects6 credentialsFounded 2023Updated Jun 2026

Project: WMATA/WPMI/WWPL System-Wide PM/CM Support

Service: Project Controls & Cost EngineeringService: Project PlanningService: CPM SchedulingIndustry: InfrastructureIndustry: TransitType: Civil Engineering+34 more

Zannino Engineering, Inc.

Glen Allen, VA

Innovative & Reliable

WebsitePhone1 office4 projects16 leaders10 credentialsFounded 1991

Project: Manchester Condos

Service: Geotechnical EngineeringService: Subsurface InvestigationsService: Foundation Design RecommendationsIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+25 more