Public engineering firm directory

Find engineering consulting firms by capability and location.

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1200 Architectural Engineers PLLC

Alexandria, VA

Illuminating Structure and New Uses.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Structural and Architectural Engineering

Service: Structural and Architectural EngineeringService: Historic Preservation EngineeringService: New Construction EngineeringIndustry: ResidentialIndustry: Historic PreservationType: Structural Engineering+5 more

ADDX Corporation

Alexandria, VA

Tenacious by Nature

WebsitePhone1 officeUpdated Jun 2026

Service detail: Engineering Readiness and Lifecycle Support

Service: Engineering Readiness and Lifecycle SupportService: Digital Engineering LaunchpadService: Engineering Readiness ReviewsIndustry: DefenseIndustry: GovernmentType: Defense Engineering+23 more

Advanced Technology Systems Company

McLean, VA

We build solutions.

WebsitePhone5 offices3 projects8 leaders2 credentialsUpdated Jun 2026

Project: Georgia Border Surveillance Program

Service: Systems IntegrationService: Security Surveillance SystemsService: Communications SystemsIndustry: DefenseIndustry: FederalType: Defense Engineering+18 more

Associated Design Group Inc

Lafayette, LA

Engineering Excellence. Energy Efficiency. Proven Results.

WebsitePhone3 offices4 projects42 leaders12 credentialsFounded 1981

Project: Caesars Superdome

Service: Mechanical DesignsService: HVAC & Climate ControlService: Plumbing & Piping DesignIndustry: Arts & CultureIndustry: CommercialType: Electrical Engineering+24 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

BAI, Inc.

Alexandria, VA

Meeting Client Challenges with Vision and Innovation

WebsitePhone1 officeFounded 1999Updated Jun 2026

Service detail: Defense Industrial Base Support

Service: Defense Industrial Base SupportService: Program Management SupportService: Administrative and Advisory ServicesIndustry: DefenseIndustry: FederalType: Software Engineering+30 more

Ballard CLC, Inc.

Alexandria, LA

Providing the Highest Level of Services

WebsitePhone1 office13 projects7 leadersFounded 1908Updated Jun 2026

Project: Alexandria VA Medical Center

Service: ArchitectureService: Educational Facility ArchitectureService: Residential ArchitectureIndustry: FederalIndustry: DefenseType: Architecture & Engineering+42 more

CES Consultants, Inc.

Miami, FL

CES Consultants is a full-service professional engineering, program management, construction management, construction inspection, design-build, progressive design-build, and program controls and technology firm. Founded in 2001, CES serves municipal, governmental, and private sector clients across civil, water and wastewater, structural, mechanical, and electrical engineering disciplines, with offices in Florida, New York, New Jersey, Virginia, and the DC Metro area.

WebsitePhone9 offices1 leadersFounded 2001Size Estimate: 140 employeesUpdated Jun 2026

Service detail: Engineering

Service: EngineeringService: Civil EngineeringService: Water and Wastewater DesignIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+22 more

CLC Engineering, LLC

Alexandria, LA

CLC Engineering is a consulting practice based in Alexandria, Louisiana, known for its focused, client-driven approach and responsive service. It specializes in civil and structural engineering for foundations, substations, switchyards, and transmission and distribution lines. Additional services include electrical design for high-voltage systems, environmental services, and forensic engineering inspections for industrial, commercial, and residential structures. Licensed in all 50 states and one U.S. territory, CLC manages projects across the continental United States and internationally.

WebsitePhone1 office3 leaders3 credentialsSize Estimate: 11-50 employeesUpdated Jun 2026

Service detail: Civil Design

Service: Civil DesignService: Storm DrainageService: Site GradingIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Civil Engineering+38 more

DCS Corporation

Alexandria, VA

Engineering, programmatic, and technical support services for national security missions.

WebsitePhone1 office3 projects8 leaders1 credentialsFounded 1977

Project: Air Force Life Cycle Management Center Support

Service: Artificial Intelligence and Machine LearningService: Deep Learning ApplicationsService: Autonomy for Air Combat MissionsIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+19 more

Dav-Lear Systems, Inc.

Diamond Bar, CA

Dav-Lear Systems, Inc. provides information technology, telecommunications, product engineering, systems engineering, and administrative support services. Founded in 1992 and headquartered in Diamond Bar, California, it serves federal, state, and local government agencies, defense contractors, and Fortune 500 corporations, with key clients including Northrop Grumman, Lockheed Martin, Raytheon, and NASA's Jet Propulsion Laboratory.

Website4 offices4 projectsFounded 1992Updated Jun 2026

Project: Desktop Network Support

Service: Software EngineeringService: Software Development and ManagementService: Software Estimating and CostingIndustry: DefenseIndustry: FederalType: Software Engineering+31 more

Design Tree

Alexandria, MN

Our Roots. Your Growth.

WebsitePhone1 office14 projects9 leadersUpdated Jun 2026

Project: Rogers Indoor Turf Facility / HealthPartners Fieldhouse

Service: Civil EngineeringService: Applications for funding agenciesService: Site layout and grading designIndustry: EducationIndustry: GovernmentType: Civil Engineering+53 more

Edgesource Corporation

Alexandria, VA

National Security Expertise That Powers Mission Success

WebsitePhone1 office3 projects4 leaders5 credentialsUpdated Jun 2026

Project: Detection Gap Integration

Service: Data EngineeringService: Mission & Data Landscape AssessmentService: Architecture, Integration & Pipeline DevelopmentIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+22 more

Endesco, Inc.

Rockville, MD

Endesco, Inc. is a multi-discipline civil engineering design, consulting, and construction management firm founded in 1997 and headquartered in Rockville, Maryland. It specializes in water resources, transportation planning and traffic engineering, roadway and lighting design, environmental studies, GIS, and project and construction management, primarily serving state DOTs, transit authorities, counties, cities, and federal agencies across the Washington, DC/Baltimore metro region and beyond.

WebsitePhone2 offices6 projects9 credentialsFounded 1997Size Estimate: 5-25 employees

Project: Transform I-66 Outside the Beltway (Express Lanes), Northern Virginia

Service: Water ResourcesService: Stormwater ManagementService: Hydraulics and HydrologyIndustry: GovernmentIndustry: TransportationType: Civil Engineering+52 more

Engenium Group LLC

Washington, DC

Delivering innovative engineering solutions through collaboration and a people-first approach.

Website3 offices7 projects9 leaders3 publicationsSize Estimate: 41 employeesUpdated Jun 2026

Project: Waterfront Station at 1100 4th Street

Service: Mechanical Engineering & DesignService: HVAC and Climate Control DesignService: Ground Source Heating & CoolingIndustry: CommercialIndustry: GovernmentType: MEP+20 more

Gul Engineering PLLC

Alexandria, VA

Engineering Solutions for a Resilient Future

WebsitePhone1 office4 leaders4 credentialsUpdated Jun 2026

Service detail: Construction Management

Service: Construction ManagementService: Construction InspectionService: Quality Assurance & Quality Control (QA/QC)Industry: GovernmentIndustry: FederalType: Civil Engineering+6 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

Hagstrom Engineering

Alexandria, MN

Civil Engineering and Land Consulting in Alexandria, MN

WebsitePhone1 office12 projects2 leaders5 credentialsFounded 2013

Project: Alexandria Light and Power New Facility

Service: Civil EngineeringService: Land Consulting and Development ServicesIndustry: CommercialIndustry: EducationType: Civil Engineering+8 more

Hall Group Design Engineering Firm, LLC

Alexandria, VA

Because We Care About People, We Care About Buildings

WebsitePhone1 office3 projects2 leaders3 publicationsUpdated Jun 2026

Project: Clubhouse Renovation

Service: Facility EngineeringService: Facility PlanningService: Engineering StudiesIndustry: CommercialIndustry: ResidentialType: Architecture & Engineering+17 more

Houston Engineering, Inc.

Fargo, ND

Build Your Community With Us.

WebsitePhone15 offices7 projects6 leaders7 credentialsFounded 1968

Project: City of Fargo Lift Stations #11 and #57 Replacement

Service: Water ResourcesService: Watershed PlanningService: Water QualityIndustry: GovernmentIndustry: FederalType: Civil Engineering+42 more

Integra Design Group

San Juan, PR

Designed for What's Next

WebsitePhone4 officesUpdated Jun 2026

Service detail: Water and Wastewater Systems

Service: Water and Wastewater SystemsService: Potable Water SystemsService: Wastewater SystemsIndustry: AirportsIndustry: BridgesType: Architecture & Engineering+31 more

JSD Professional Services, Inc.

Madison, WI

Planning, Engineering, Surveying, Landscape Architecture, Development Services

Website7 offices5 projects5 leaders14 credentialsFounded 1998Size Estimate: 50-150 employees

Project: Nativity Jesuit Academy Pedestrian Mall

Service: Civil EngineeringService: Site grading and earthworkService: Utility designIndustry: Multifamily ResidentialIndustry: Senior LivingType: Civil Engineering+40 more

KMS Solutions, LLC

Alexandria, VA

Your Success is Our Mission!

WebsitePhone8 offices14 leaders5 credentialsFounded 2005Updated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Submarine and Surface Ship Combat & Command Control Systems AnalysisService: Off-Board Sensors and Sonar SystemsIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+35 more

Kinetic Metrics LLC

Alexandria, VA

Beyond Automotive Safety

WebsitePhone1 office1 projects2 leaders1 credentialsFounded 2015

Project: National Park Service Signage and Transportation Plan

Service: Automotive Regulatory and SafetyService: NHTSA Safety Compliance Consulting and TrainingService: Part 555 Exemptions and NHTSA InterpretationsIndustry: AutomotiveIndustry: TransportationType: Transportation Engineering+11 more