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.

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Advanced Technology Systems Company

McLean, VA

We build solutions.

WebsitePhone5 offices3 projects
Service: Systems IntegrationService: Security Surveillance SystemsIndustry: DefenseType: Defense Engineering+20 more

Altron, Inc.

Mount Pleasant, SC

Trusted Service - Proven Results

WebsitePhone2 offices2 projects
Service: Systems and Software EngineeringService: AI and Machine LearningIndustry: DefenseType: Defense Engineering+27 more

Brett LLC

Bristow, VA

Information Technology Consulting

WebsitePhone1 office1 leaders
Service: Systems and Software EngineeringService: Net-Centric Data InteroperabilityIndustry: FederalType: Software Engineering+29 more

Bridge Diagnostics, Inc.

Louisville, CO

Protecting What You Build

WebsitePhone6 offices1 projects
Service: Diagnostic Load TestingService: Structural Health MonitoringIndustry: TransportationType: Civil Engineering+25 more

Compass Systems, Inc.

Lexington Park, MD

American Precision for Mission-Ready Technologies

WebsitePhone10 offices4 leaders
Service: Research and DevelopmentService: AI-Enabled Decision SupportIndustry: DefenseType: Defense Engineering+29 more

Dewberry

Fairfax, VA

Family Owned. Client Centric. Community Driven.

WebsitePhone1 office38 projects
Service: ArchitectureService: Architectural DesignIndustry: FederalType: Architecture & Engineering+56 more

Epsilon Systems Solutions, Inc.

San Diego, CA

Epsilon Systems Solutions, Inc. is a defense engineering and technical services provider headquartered in San Diego, California, with facilities in Portsmouth, Virginia, Mayport, Florida, and Pearl Harbor, Hawaii. Epsilon Systems provides marine engineering and ship repair for all classes of U.S. Navy vessels, C5ISR systems engineering and intelligence support, manufacturing of advanced military and commercial products, and technical services including geospatial analysis, environmental compliance, and simulation training. Operating over 125,000 square feet of repair, modernization, and manufacturing facilities near major U.S. Navy homeports, Epsilon Systems holds SUBSAFE certification on all classes of submarines and serves the U.S. Navy, NAVAIR, NAVSEA, and the broader national security community.

Website5 offices12 credentialsUpdated Jun 2026
Service: Navy Ship Repair and ModernizationService: SUBSAFE Submarine Modernization and RepairIndustry: DefenseType: Defense Engineering+32 more

Eritek Inc

Leesburg, VA

Innovative engineering solutions in RF and optical communications, optical sensing, and digital processing

WebsitePhone1 officeUpdated Jun 2026
Service: Optical EngineeringService: Free Space Optical CommunicationsIndustry: GovernmentType: Telecom / RF Engineering+23 more

Hager Development Group, LLC

Virginia Beach, VA

By Skill & Valor

WebsitePhone1 officeUpdated Jun 2026
Service: Engineering and Technical ServicesService: Systems engineeringIndustry: DefenseType: Defense Engineering+32 more

Jerico Technologies LLC

Fredericksburg, VA

Alternative Energy, Sensors, and Communication Systems

Website1 officeFounded 2021Updated Jun 2026
Service: Systems Engineering and Technical AdvisoryService: Requirements Traceability and ManagementIndustry: DefenseType: Electrical Engineering+25 more

MHA Technologies, Inc.

Fairfax, VA

Actionable Data Science & Analytics

WebsitePhone1 officeUpdated Jun 2026
Service: Technical ServicesService: Technology ConsultingIndustry: FederalType: Software Engineering+14 more

Marine Acoustics, Inc.

Middletown, RI

Technical Superiority in the Ocean Environment

WebsitePhone3 offices1 projects
Service: Environmental ServicesService: Passive Acoustic Monitoring & TrackingIndustry: DefenseType: Acoustic Consulting+24 more

Metis LI, LLC

Huntington Beach, CA

Advanced Security Solutions

Website3 offices5 leaders1 credentials
Service: Lawful Intercept SystemsService: Strategic Intercept SystemsIndustry: GovernmentType: Defense Engineering+14 more

Planet Defense LLC

Fairfax, VA

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

WebsitePhone1 office4 projects
Service: CybersecurityService: Risk and Vulnerability AssessmentsIndustry: FederalType: Software Engineering+69 more

Programs Management Analytics & Technologies, Inc.

Norfolk, VA

Enhancing Decision Dominance

WebsitePhone4 offices3 projects
Service: Systems EngineeringService: Architecture DesignIndustry: DefenseType: Defense Engineering+31 more

Quantatronics LLC

McLean, VA

Empowering Our Clients With Innovative Solutions

Website1 officeUpdated Jun 2026
Service: Science and Technology EngineeringService: Advanced Prototype DevelopmentIndustry: DefenseType: Defense Engineering+26 more

The Probitas Project, Inc.

Vienna, VA

Developing Innovative Solutions that our Customers Need

WebsitePhone1 office2 leaders
Service: Digital Signal ProcessingService: Machine Learning for ClassificationIndustry: DefenseType: Defense Engineering+13 more

Valley Automation, Inc.

Luray, VA

Complex Challenges Solved with Custom Solutions

WebsitePhone4 offices3 projects
Service: Discrete ControlsService: PLC ProgrammingIndustry: IndustrialType: Automation & Controls+42 more

Weiland Innovations LLC

Fredericksburg, VA

Developing unique and innovative solutions to biomedical and unmanned systems engineering challenges

WebsitePhone1 office1 projects
Service: Basic and Applied Engineering Research SupportService: Fluid Dynamics ResearchIndustry: DefenseType: Mechanical Engineering+23 more

deciBel Research

Huntsville, AL

Making Systems and Their Sensors Smarter

Website5 offices1 projectsFounded 2002
Service: Modeling, Simulation, and AnalysisService: Digital and Hardware-in-the-Loop TestingIndustry: DefenseType: Defense Engineering+18 more