Public engineering firm directory

Find engineering consulting firms by capability and location.

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A-P-T Research, Inc.

Huntsville, AL

Providing Safe Solutions.

WebsitePhone1 office3 projects4 leaders5 credentialsFounded 1990

Project: NASA Goddard Space Flight Center Safety and Mission Assurance Services (SMAS) III

Service: System Safety EngineeringService: Hazard Analysis and Risk AssessmentService: Hazard ClassificationIndustry: AerospaceIndustry: SpaceType: Process Safety Engineering+40 more

AVT Simulation

Orlando, FL

Improving Readiness Through Training

WebsitePhone1 office4 projects3 leaders3 credentialsFounded 1998

Project: Apache Gunnery Trainer (AGT) Delivery

Service: Flight Simulator DevelopmentService: Rotary Wing TrainersService: Fixed Wing TrainersIndustry: DefenseIndustry: AviationType: Defense Engineering+46 more

Anchor Innovation, Inc.

Virginia Beach, VA

From the Waterfront to Operational Edge

WebsitePhone1 office1 credentialsFounded 2002Size Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Direct Operations Support

Service: Direct Operations SupportService: Port OperationsService: Maritime SecurityIndustry: DefenseIndustry: Public SafetyType: Defense Engineering+28 more

BlueJireh

We care about your challenges and build solutions that demonstrate our commitment.

Website1 projects1 leaders1 credentialsFounded 2005Size Estimate: 1-25 employeesUpdated Jun 2026

Project: TRUC Automated Cargo Loading System

Service: Automated Cargo Loading Systems (TRUC)Service: Cargo Automation EngineeringService: Prototype Development and TestingIndustry: DefenseIndustry: AerospaceType: Aerospace Engineering+17 more

Brown Construction Services, Inc.

Annandale, VA

Delivering quality & value to your critical infrastructure

WebsitePhone1 office1 leaders1 credentialsFounded 1997Updated Jun 2026

Service detail: Construction Project Management

Service: Construction Project ManagementService: Facilities Consulting and Building ManagementService: Business Process ImprovementIndustry: DefenseIndustry: FederalType: Owner's Engineer+15 more

Centuria Corporation

Reston, VA

A Data Driven Company

WebsitePhone2 offices3 projects7 leaders7 credentialsFounded 2002

Project: NOAA Radar Operations Center Mission Support Services

Service: Engineering & Scientific ServicesService: Systems EngineeringService: Modeling & SimulationIndustry: FederalIndustry: GovernmentType: Aerospace Engineering+61 more

Compendium Federal Technology, LLC

Lexington Park, MD

Optimizing Operational and Engineering Models with Dynamic Visualizations for Today's Warfighter

WebsitePhone2 offices5 leaders7 credentials2 publicationsFounded 2010

Service detail: Model-Based Systems Engineering (MBSE)

Service: Model-Based Systems Engineering (MBSE)Service: Mission EngineeringService: Communications and Network AnalysisIndustry: DefenseIndustry: FederalType: Defense Engineering+8 more

ELOS

Hammond, LA

Where Natural Environments and Human Interests Intersect

WebsitePhone1 office6 leaders10 credentialsFounded 2006Updated Jun 2026

Service detail: Permitting Applications and Regulatory Compliance

Service: Permitting Applications and Regulatory ComplianceService: Environmental ServicesService: Environmental Site AssessmentsIndustry: GovernmentIndustry: FederalType: Environmental Engineering+26 more

Electronics Service, Inc.

Wilmington, DE

Putting RF Where It Belongs

WebsitePhone1 office4 credentialsUpdated Jun 2026

Service detail: E3 Systems Integration & Integrated Topside Design

Service: E3 Systems Integration & Integrated Topside DesignService: Requirements and compliance reviewService: Systems and subsystems disposition evaluationIndustry: DefenseIndustry: FederalType: Telecom / RF Engineering+56 more

Element 29 LLC

Tampa, FL

Multidisciplinary engineering for industrial, energy, and mission-critical systems.

WebsitePhone1 office19 projects1 leaders2 credentialsUpdated Jun 2026

Project: 20.5 MGD Reverse Osmosis System

Service: Process and Chemical EngineeringService: Process flow diagrams and P&IDsService: Mass and energy balancesIndustry: IndustrialIndustry: ManufacturingType: Process Engineering+108 more

Environ-Civil Engineering, Ltd.

Columbia, MD

Quality, Integrity, Innovation, and Responsiveness

WebsitePhone3 offices6 projects3 leaders12 credentialsFounded 1992

Project: WSSC Piscataway Water Resource Recovery Facility Bio-Energy Project

Service: Water & Wastewater EngineeringService: Water supply and distribution system designService: Distribution and transmission main systemsIndustry: GovernmentIndustry: FederalType: Water / Wastewater Engineering+50 more

FGS, LLC

La Plata, MD

Excellence in Every Endeavor

WebsitePhone3 offices3 leaders1 credentialsFounded 2004Updated Jun 2026

Service detail: Facilities Engineering

Service: Facilities EngineeringService: Audio Visual & Multimedia SolutionsService: Intelligence Analysis & OperationsIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+8 more

First Principles Incorporated

Where Momentum is Fundamental

Website1 leaders1 credentialsFounded 2004Updated Jun 2026
Service: Systems EngineeringService: Ground and Flight Test SupportService: Operational AnalysisIndustry: DefenseIndustry: FederalType: Defense Engineering+5 more

FourFront Design, Inc.

Rapid City, SD

Creating the built environment...for people!

WebsitePhone2 offices6 projects5 leaders3 credentialsFounded 1952

Project: Nashville National Cemetery Historic Lodge Addition and Renovation

Service: ArchitectureService: Schematic DesignService: Design DevelopmentIndustry: CommercialIndustry: RetailType: Architecture & Engineering+35 more

GreenDart Incorporated

Long Beach, CA

GreenDart delivers superior program savings to U.S. government mission-critical system development efforts, focusing on environments where risk reduction yields significant program cost savings. The practice provides Test and Evaluation (T&E), Verification and Validation (V&V), Cybersecurity Assessments, Data Analytics, and Systems Engineering and Integration (SE&I) services, operating either as an independent assessment team or embedded directly with development teams. GreenDart holds a GSA Multiple Award Schedule contract vehicle and has delivered advanced engineering services to agencies including DHS Customs and Border Protection, the USAF Space and Missile Systems Center, and the DHS Science and Technology Directorate.

WebsitePhone1 office3 projects1 leaders2 credentialsUpdated Jun 2026

Project: DHS Customs and Border Protection T&E Services

Service: Test and EvaluationService: Developmental Testing and AnalysisService: Operational Phase TestingIndustry: DefenseIndustry: AerospaceType: Defense Engineering+25 more

HFS Company

San Antonio, TX

Helping Our Clients Achieve Tomorrow's Projects Today

WebsitePhone1 office15 projects11 leaders9 credentialsFounded 2003

Project: USACE and DHA Project Support Across Europe

Service: A-E Design ServicesService: Facility DesignService: Infrastructure PlanningIndustry: GovernmentIndustry: FederalType: Architecture & Engineering+17 more

Hassan Water Resources, PLC

Maidens, VA

Innovative Solutions to Water Resources Challenges

WebsitePhone1 office2 credentialsFounded 2007Size Estimate: 1-24 employeesUpdated Jun 2026

Service detail: Hydrologic and Hydraulic Engineering

Service: Hydrologic and Hydraulic EngineeringService: Watershed Hydrologic ModelingService: Riverine and Coastal Hydraulic ModelingIndustry: Water ResourcesIndustry: Stormwater & Flood ControlType: Water / Wastewater Engineering+25 more

High Street Consulting Group LLC

Pittsburgh, PA

Inspired Transportation Solutions for a Complex World

WebsitePhone1 office7 projects8 leadersUpdated Jun 2026

Project: Arizona DOT, West Kingman I-40 and US-93 Traffic Interchange Projects

Service: Long-Range Transportation PlansService: Performance ManagementService: Transportation Asset Management PlanningIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+9 more

Horsley Witten Group

Sandwich, MA

Your Partner. Nature's Steward.

WebsitePhone4 offices5 leadersFounded 1987Size Estimate: 75+ employeesUpdated Jun 2026

Service detail: Water Resources Management

Service: Water Resources ManagementService: Water SupplyService: WastewaterIndustry: GovernmentIndustry: Water ResourcesType: Civil Engineering+30 more

Innovim, LLC

Silver Spring, MD

Secure Intelligence. Scientific Precision. Mission Advantage.

WebsitePhone1 office4 projects4 leaders19 credentialsFounded 2003

Project: Space Weather Follow-On L1 Satellite Support

Service: Data Engineering, Science & AnalyticsService: AI/ML PipelinesService: Cloud-Native ArchitectureIndustry: SpaceIndustry: Environmental & RemediationType: Defense Engineering+21 more

Jahn Corporation

Lexington Park, MD

Providing the Highest Quality Advanced Solutions to Engineering and Management Problems for Government and Commercial Customers

WebsitePhone1 officeFounded 1989Size Estimate: 51-100 employeesUpdated Jun 2026

Service detail: Program Management

Service: Program ManagementService: Program Operations SupportService: Logistics AnalysisIndustry: DefenseIndustry: GovernmentType: Defense Engineering+20 more

K2M Design

Building Relationships Based on Trust and Results

Website12 projects1 leaders4 credentials4 publicationsSize Estimate: 120+ employeesUpdated Jun 2026

Project: Indianapolis-Marion County Community Justice Campus

Service: ArchitectureService: Programming & PlanningService: Construction AdministrationIndustry: Justice & CorrectionsIndustry: HospitalityType: Architecture & Engineering+20 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

LCA Environmental, Inc.

Farmers Branch, TX

Providing Sustainable Environmental Solutions That Stand the Test of Time

WebsitePhone1 office2 projects6 leaders11 credentialsFounded 1992

Project: LBJ Freeway Environmental Compliance

Service: Environmental Site AssessmentService: Phase I Environmental Site AssessmentService: Phase II Environmental Site AssessmentIndustry: GovernmentIndustry: FederalType: Environmental Engineering+22 more