Public engineering firm directory

Find engineering consulting firms by capability and location.

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3U Technologies, LLC

Conroe, TX

Business consultant services engineered to withstand any condition

WebsitePhone1 office2 projects11 leaders10 publicationsFounded 1998

Project: Oregon State University Northwest National Marine Renewable Energy Center Support

Service: International Business ConsultingService: Market analysesService: Feasibility studiesIndustry: Oil & GasIndustry: TelecommunicationsType: Marine Engineering+38 more

A.W. Schultz Inc.

Shawnee, KS

Trusted Engineering and Integration Since 1977

WebsitePhone1 office3 credentialsFounded 1977Updated Jun 2026

Service detail: Process Control and SCADA Systems

Service: Process Control and SCADA SystemsService: Process Visualization & HMI/OITService: PLC ProgrammingIndustry: Water SupplyIndustry: WastewaterType: Automation & Controls+25 more

AENY Engineering P.C.

Northport, NY

Cost Effective Engineering

WebsitePhone2 officesUpdated Jun 2026

Service detail: Naval Architecture and Marine Engineering

Service: Naval Architecture and Marine EngineeringService: Vessel Design and Construction SupportService: Shipboard Systems IntegrationIndustry: AirportsIndustry: TransitType: Naval Architecture+27 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

Allgeier, Martin and Associates, Inc.

Joplin, MO

It's not just business...it's personal.

WebsitePhone6 offices17 projects20 leaders39 credentialsFounded 1954

Project: Route 66 Bridge

Service: Civil EngineeringService: BridgesService: IntersectionsIndustry: GovernmentIndustry: WastewaterType: Civil Engineering+33 more

Ascent Signal LLC

Electrical control and signaling systems design for transit and transportation infrastructure

WebsiteUpdated Jun 2026

Service detail: Railroad and Transit Systems

Service: Railroad and Transit SystemsService: Train Control System EngineeringService: Rail Transit Communication SystemsIndustry: RailIndustry: TransitType: Automation & Controls+14 more

Atlas Design Services

Austin, TX

Traditional principles. Modern practices.

WebsitePhone1 office8 leaders12 credentialsFounded 2007Size Estimate: 1-9 employees

Service detail: Civil Engineering

Service: Civil EngineeringService: Staff AugmentationService: Public InfrastructureIndustry: GovernmentIndustry: CommercialType: Civil Engineering+20 more

Automation Control Service LLC

Pensacola, FL

Control System Integrator specializing in Automation & Information Systems

WebsitePhone1 office8 credentialsFounded 2003Updated Jun 2026

Service detail: Municipal & Industrial Automation

Service: Municipal & Industrial AutomationService: PLC & HMI ProgrammingService: SCADA & DCS IntegrationIndustry: GovernmentIndustry: IndustrialType: Automation & Controls+23 more

C6I Services Corp

The art of command balanced with the science of control.

WebsiteUpdated Jun 2026

Service detail: Command & Control Systems

Service: Command & Control SystemsService: Network SupportService: Software Sustainment ProgramsIndustry: DefenseIndustry: GovernmentType: Defense Engineering+35 more

Cartesian Science & Technology LLC

Fort Meade, MD

All knowledge are interdependent and form one idea.

Website2 officesUpdated Jun 2026

Service detail: Spectrum Engineering

Service: Spectrum EngineeringService: Spectrum certification and assignmentService: EMC and EMI technical reviewIndustry: DefenseIndustry: FederalType: Telecom / RF Engineering+27 more

Comm-Ence Engineering LLC

Darien, IL

Changing Communications

Website1 office1 leaders12 credentialsUpdated Jun 2026

Service detail: Technology Engineering and Commissioning

Service: Technology Engineering and CommissioningService: Technology CommissioningService: Needs Assessments and Master PlanningIndustry: TelecommunicationsIndustry: Data CentersType: Telecom / RF Engineering+31 more

Consolidated Networks Corporation

Oklahoma City, OK

Consolidated Networks Corporation is a secured IP network engineering services company based in Oklahoma City, Oklahoma. It provides certified professional engineers and technicians to design, build, secure, and maintain communication infrastructure for government, defense, education, and commercial clients. With over 22 years of experience, CNC specializes in communication infrastructure design, network security, managed services, cyber security, and education technology.

WebsitePhone1 office2 leaders2 credentialsUpdated Jun 2026

Service detail: Design & Build

Service: Design & BuildService: Infrastructure ModernizationService: PoE and IoT SolutionsIndustry: DefenseIndustry: GovernmentType: Telecom / RF Engineering+13 more

Control Engineers

Boise, ID

Industrial Electrical and Control Systems Engineering

WebsitePhone1 office7 projects5 credentialsFounded 2000Updated Jun 2026

Project: Surface Water Treatment Plant & Citywide Distribution Design

Service: Electrical EngineeringService: Power Distribution DesignService: Instrumentation & ControlsIndustry: Water SupplyIndustry: WastewaterType: Electrical Engineering+17 more

CybiTech, Inc.

Revolutionizing products and services for the future

WebsiteUpdated Jun 2026

Service detail: Project Management

Service: Project ManagementService: Project Planning and SchedulingService: Budgeting and Resource AllocationIndustry: FederalIndustry: GovernmentType: Software Engineering+21 more

Electric Utility Consultants, LLC

Expert substation and transmission & distribution engineering services

Website1 leadersUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Protection and Controls DesignService: Physical Electrical LayoutIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+21 more

Equagen Engineers PLLC

Raleigh, NC

Engineering by Ingenuity

Website1 office2 credentialsSize Estimate: 51-200 employeesUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Feasibility StudiesService: Site Selection and EvaluationIndustry: Power Transmission & DistributionIndustry: Renewable EnergyType: Power & Utility Engineering+54 more

Express Technologies, Inc.

Fredericksburg, VA

Connecting the World Through End-to-End System Integration & Utility Infrastructure

WebsitePhone3 offices13 leaders1 credentialsFounded 2002Updated Jun 2026

Service detail: Utility Consulting

Service: Utility ConsultingService: Telecom And Dry Utility Consulting ServicesService: PermittingIndustry: CommercialIndustry: DefenseType: Telecom / RF Engineering+18 more

Gillespie Prudhon Associates Inc

Clackamas, OR

Engineering Excellence Since 1980

WebsitePhone1 office5 projects1 credentialsFounded 1980Updated Jun 2026

Project: Oregon Coastal Cascade & Willamette Valley Microwave Radio Update

Service: Telecommunications EngineeringService: Transmission EngineeringService: Telecommunications TransportIndustry: FederalIndustry: GovernmentType: Civil Engineering+39 more

Globetrotters Engineering Corporation

Chicago, IL

Architecture, Engineering, Technology

WebsitePhone3 offices9 projects6 leaders10 credentialsFounded 1974

Project: O'Hare International Airport Terminal 5

Service: ArchitectureService: Condition AssessmentService: Spatial and Building DesignIndustry: TransitIndustry: TransportationType: Architecture & Engineering+48 more

HBK Engineering, LLC

Chicago, IL

A Proven Leader in Utility Engineering

WebsitePhone29 offices6 credentialsFounded 1998Size Estimate: 900+ employeesUpdated Jun 2026

Service detail: Electrical Utility Infrastructure Design

Service: Electrical Utility Infrastructure DesignService: Transmission and distribution line designService: Substation designIndustry: Electric UtilitiesIndustry: Power GenerationType: Environmental Engineering+48 more

Hallberg Engineering, Inc.

White Bear Lake, MN

Design excellence that delivers enduring value.

Website2 offices4 leaders6 credentialsFounded 1979Size Estimate: 40+ employeesUpdated Jun 2026

Service detail: Mechanical Engineering and Design

Service: Mechanical Engineering and DesignService: HVAC SystemsService: Boiler and Chilled Water PlantsIndustry: CommercialIndustry: EducationType: Electrical Engineering+28 more

InteliOPT, Inc.

Superior Quality and Value Telecom & IT Services Company

WebsiteFounded 2008Updated Jun 2026

Service detail: Distributed Antenna Systems (DAS) & Small Cell Solutions

Service: Distributed Antenna Systems (DAS) & Small Cell SolutionsService: i-DAS & o-DAS Site SurveysService: System Design & IntegrationIndustry: TelecommunicationsIndustry: Public SafetyType: Telecom / RF Engineering+29 more

Intelligent Transportation Systems LLC

Prairieville, LA

Engineering a Safer and Better World.

WebsitePhone1 office4 projects1 credentialsUpdated Jun 2026

Project: Louisiana Adaptive Signal System Implementation

Service: EngineeringService: Traffic & Adaptive Signal EngineeringService: ITS Planning & Systems EngineeringIndustry: TransportationIndustry: InfrastructureType: Electrical Engineering+14 more

InterLinkGIS Solutions

Fairfax, VA

Geospatial Analysis, OSP Design, and Engineering Drafting

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Geospatial and GIS Analysis

Service: Geospatial and GIS AnalysisService: Spatial analysisService: Terrain analysisIndustry: TelecommunicationsIndustry: UtilitiesType: Telecom / RF Engineering+29 more