Public engineering firm directory

Find engineering consulting firms by capability and location.

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Cavan Solutions Inc

Washington, DC

Your trusted advisor in the world of aviation!

Website1 office6 projects9 leaders1 credentialsUpdated Jun 2026

Project: Air Traffic Flow Management (ATFM) Enhancement

Service: Analytics and AssessmentService: Data AnalyticsService: Operational Needs AssessmentIndustry: AviationIndustry: SpaceType: Aviation Engineering+14 more

Delon Hampton & Associates, Chartered

Washington, DC

Engineering is our practice. Commitment to excellence is our passion.

WebsitePhone5 offices10 projects8 leaders12 credentialsFounded 1973

Project: DC Water Clean Rivers

Service: Civil EngineeringService: Site Design and FeasibilityService: Infrastructure Evaluation and DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+27 more

Drm International Inc

Radnor, PA

Proven. Driven. Visionary.

Website2 offices1 leaders2 credentialsFounded 2000Updated Jun 2026

Service detail: Construction Management

Service: Program ManagementService: Construction ManagementService: Construction AdministrationIndustry: RailIndustry: TransitType: Architecture & Engineering+20 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

LS Technologies, LLC

Washington, DC

Transformation That Moves the Nation. Delivering Airspace Innovation Now.

WebsitePhone1 office3 projects13 leaders2 credentialsFounded 2000

Project: Ryan Airfield Air Traffic Control Tower Upgrade

Service: Engineering ServicesService: Systems EngineeringService: Air Traffic Control EngineeringIndustry: AviationIndustry: AerospaceType: Aviation Engineering+20 more

Modjeski and Masters, Inc.

Mechanicsburg, PA

One of the world's leading bridge engineering practices

WebsitePhone19 offices7 projects2 leaders2 credentialsFounded 1893

Project: Hawk Falls Bridge Replacement

Service: Bridge DesignService: Fixed Bridge DesignService: Movable Bridge DesignIndustry: BridgesIndustry: TransportationType: Structural Engineering+26 more

RESPEC Company LLC

Rapid City, SD

Practical Outcomes From Complex Challenges

WebsitePhone19 offices3 leadersUpdated Jun 2026

Service detail: Infrastructure Resiliency and Modernization

Service: Infrastructure Resiliency and ModernizationService: Transportation NetworksService: Water SystemsIndustry: MiningIndustry: TransportationType: Civil Engineering+43 more

SETTY & Associates

Washington, DC

Design | Engineering | Sustainability

WebsitePhone12 offices12 projects9 leaders9 credentialsFounded 1984

Project: DCPS COVID / Emergency IAQ Retrofits

Service: MEP/FP EngineeringService: Mechanical HVAC Systems DesignService: Electrical Power and Lighting SystemsIndustry: HealthcareIndustry: LaboratoriesType: MEP+39 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

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

Tech-Marine Business, Inc.

Washington, DC

Customer-Focused Federal Engineering and Program Support

Website1 office6 leaders4 credentialsFounded 1997Updated Jun 2026

Service detail: Acquisition Management Support

Service: Acquisition Management SupportService: Business Financial Management SupportService: Earned Value Management SupportIndustry: DefenseIndustry: FederalType: Defense Engineering+13 more

Veracity Engineering

Washington, DC

Veracity Engineering is a systems engineering and program management firm based in Washington, DC, focused on air traffic management modernization and airspace safety. For over 21 years, its staff has provided federal government clients with full lifecycle engineering support, technical services, and programmatic leadership to increase the safety, security, and capacity of the nation's air traffic management systems. Veracity also develops and operates its SurfaceView and AIRPORTinsight airport surface surveillance products, which provide real-time surface situational awareness for airports of all sizes.

Website1 office3 leadersUpdated Jun 2026

Service detail: Systems Engineering & Program Management

Service: Systems Engineering & Program ManagementService: Air Traffic Control CommunicationsService: Information Technology System SupportIndustry: AviationIndustry: AirportsType: Aviation Engineering+5 more

Wells + Associates

Tysons, VA

Transportation Consultants - Engineering, Planning, TDM

WebsitePhone4 offices6 projects7 leadersUpdated Jun 2026

Project: The Key Hilton Rosslyn: Traffic + Parking Studies, PMP, TMP/TDM

Service: Traffic EngineeringService: Traffic impact studies and site assessmentsService: Traffic signal design, modification, and warrant studiesIndustry: TransportationIndustry: CommercialType: Transportation Engineering+28 more

Xdesign Engineering Services

Washington, DC

Innovative Engineering Solutions

Website1 officeUpdated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Power Distribution DesignService: Lighting DesignIndustry: ManufacturingIndustry: HealthcareType: Electrical Engineering+28 more