Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

Filters1

Acclaim Collier Engineering PLLC

Chicago, IL

Taking Your Transit and Transportation Programs to the Next Level

WebsitePhone1 office2 projects1 leadersUpdated Jun 2026

Project: Lake County DOT Value Engineering Study

Service: Project and Program ManagementService: Civil Project OversightService: Project Scheduling and ControlsIndustry: TransitIndustry: TransportationType: Civil Engineering+14 more

Advanced Research and Engineering Integrated Solutions LLC

Niceville, FL

Engineering solutions for unmanned and embedded systems

WebsitePhone1 office1 leadersFounded 2010Updated Jun 2026

Service detail: Unmanned Systems Engineering

Service: Unmanned Systems EngineeringService: Unmanned Aerial VehiclesService: Sensors and PayloadsIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+23 more

Avitility

Ashburn, VA

Trusted Mission Partner delivering cutting edge Audio Visual solutions

WebsitePhone1 officeUpdated Jun 2026

Service detail: Professional AV Design and Engineering

Service: Professional AV Design and EngineeringService: Concept and Capability AssessmentService: System Diagramming and DocumentationIndustry: GovernmentIndustry: FederalType: Defense Engineering+24 more

Castellon Consulting LLC

Azle, TX

Drainage studies, floodplain analysis, and H&H modeling for land developers, engineers, and property owners

WebsitePhone1 office2 leaders1 credentialsUpdated Jun 2026

Service detail: Water Resources Engineering

Service: Water Resources EngineeringService: Hydrologic & Hydraulic (H&H) ModelingService: Downstream Impact AssessmentsIndustry: Water ResourcesIndustry: Stormwater & Flood ControlType: Civil Engineering+27 more

DiDonato Associates Engineering and Architecture, P.C.

Buffalo, NY

Responsive. Honest. Accurate.

WebsitePhone1 office7 projects10 leaders14 credentialsFounded 1965

Project: Main Street Revitalization - Cars Sharing Main

Service: Civil EngineeringService: Roadway Rehabilitation / Complete StreetsService: Site / Civil DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+53 more

EHS-Alaska, Inc.

Eagle River, AK

Alaska's Leader in Hazardous Building Materials Identification and Abatement Design

WebsitePhone1 office5 credentialsFounded 1986Size Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Hazardous Materials Consulting

Service: Hazardous Materials ConsultingService: Asbestos Hazard Emergency Response Act (AHERA) complianceService: Hazardous materials surveys and inspectionsIndustry: FederalIndustry: GovernmentType: Environmental Engineering+34 more

Emergent Communications and Technology Integration, LLC

Your Enterprise Communications Partner

Website1 leadersFounded 2026Size Estimate: 1 employeesUpdated Jun 2026

Service detail: Technical Consulting

Service: Technical ConsultingService: Independent Technical AnalysisService: System Architecture and DesignIndustry: DefenseIndustry: Public SafetyType: Telecom / RF Engineering+14 more

Excelsior Engineering & Land Surveying P.C.

New York, NY

Providing Premier Engineering Throughout the Tri-State Area and Florida

Website1 office2 projects1 leadersUpdated Jun 2026

Project: 95th Street Shellbank Basin Infrastructure Improvements

Service: Construction ManagementService: Resident Engineering InspectionService: Construction InspectionIndustry: InfrastructureIndustry: Highways & RoadsType: Civil Engineering+42 more

FGC Engineers

Fullerton, CA

Engineering Solutions Built Around Your Project

WebsitePhone1 officeUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Performance ImprovementsService: Efficiency ImprovementsIndustry: CommercialIndustry: Data CentersType: Architecture & Engineering+48 more

General Dynamics Mission Systems

Engineering mission-critical C4ISR solutions across land, sea, air, space, and cyber domains

Website5 projectsUpdated Jun 2026

Project: Columbia-Class Submarine Program

Service: Assured Positioning, Navigation & Timing (APNT)Service: Fight Tonight Assured PNT SystemService: MRPA Horizon-Nulling Active AntennaIndustry: DefenseIndustry: FederalType: Defense Engineering+41 more

Gideon Defense LLC

Sterling Heights, MI

Advancing national security through innovation in Contested Logistics and Systems Engineering

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Contested Logistics

Service: Contested LogisticsService: Expeditionary SupportService: Systems Engineering & IntegrationIndustry: DefenseIndustry: GovernmentType: Defense Engineering+11 more

Hager Development Group, LLC

Virginia Beach, VA

By Skill & Valor

WebsitePhone1 officeUpdated Jun 2026

Service detail: Engineering and Technical Services

Service: Engineering and Technical ServicesService: Systems engineeringService: Operational test and evaluationIndustry: DefenseIndustry: FederalType: Defense Engineering+30 more

Horner & Shifrin, Inc.

St. Louis, MO

Horner & Shifrin is a multidisciplinary professional services engineering firm founded in St. Louis in 1933, offering building systems MEP/FP engineering, water and wastewater, transportation, structural, environmental, geospatial, surveying, and construction services. With nine offices across Missouri, Illinois, and Arkansas and repeat client assignments from 80% of its client base, H&S serves education, government, healthcare, emergency services, utilities, and private markets throughout the Midwest.

WebsitePhone9 offices8 leaders2 credentialsFounded 1933Updated Jun 2026

Service detail: Building Services

Service: Building ServicesService: Drinking WaterService: WastewaterIndustry: EducationIndustry: GovernmentType: MEP+32 more

J4 Aviation LLC

California, MD

Mission critical solutions.

Website1 office1 credentialsFounded 2024Updated Jun 2026

Service detail: Aviation Solutions

Service: Aviation SolutionsService: Persistent Airborne AwarenessService: Communications RelayIndustry: AviationIndustry: DefenseType: Aviation Engineering+10 more

Kandou Structural Engineering and Testing

San Francisco, CA

Resilient by nature.

WebsitePhone1 office9 projects1 leadersSize Estimate: 1-9 employeesUpdated Jun 2026

Project: Eshleman Hall

Service: DesignService: Residential and Commercial Structural DesignService: Permitting and Documentation SupportIndustry: CommercialIndustry: ResidentialType: Structural Engineering+24 more

L3Harris Technologies, Inc.

Melbourne, FL

Fast. Forward.

Website1 office3 projectsSize Estimate: 1,000+ employeesUpdated Jun 2026

Project: Polish Navy Miecznik-class Frigate IPMS

Service: Electronic WarfareService: Command and ControlService: Advanced Battle Management System NetworkIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+28 more

Metis LI, LLC

Huntington Beach, CA

Advanced Security Solutions

Website3 offices5 leaders1 credentialsUpdated Jun 2026

Service detail: Lawful Intercept Systems

Service: Lawful Intercept SystemsService: Strategic Intercept SystemsService: Tactical Intercept SystemsIndustry: GovernmentIndustry: DefenseType: Defense Engineering+12 more

Pacific Rim Environmental Inc

Tukwila, WA

Redefining Consulting for 30 Years

WebsitePhone1 office2 credentialsUpdated Jun 2026

Service detail: Hazardous Materials Consulting

Service: Hazardous Materials ConsultingService: Building and Facility SurveysService: Hazardous Condition AssessmentsIndustry: CommercialIndustry: IndustrialType: Environmental Engineering+34 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

Primate Technologies, LLC

Melbourne, FL

Control Room Software Built for Critical Decisions

WebsitePhone1 office1 projectsUpdated Jun 2026

Project: Baldwin EMC: From Static Mapboard to Dynamic Control Room

Service: Data Integration and CalculationsService: Operational Systems IntegrationService: Intelligent Data ProcessingIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Software Engineering+19 more

RCP Inc.

Houston, TX

Professional Engineers. Regulatory Experts. Trusted Partners.

WebsitePhone1 office2 leadersFounded 1995Size Estimate: 51-200 employeesUpdated Jun 2026

Service detail: Consulting Services

Service: Consulting ServicesService: Jurisdictional AnalysisService: Expert WitnessIndustry: Oil & GasIndustry: ChemicalsType: Process Safety Engineering+49 more

Unmanned Experts

Confidence at the Cutting Edge

Website3 leadersUpdated Jun 2026

Service detail: Advanced Air Mobility (AAM) Planning

Service: Advanced Air Mobility (AAM) PlanningService: Integrated Traffic ManagementService: Air Domain AwarenessIndustry: DefenseIndustry: Oil & GasType: Automation & Controls+8 more