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.

Filters2

D.L. Adams Associates

Denver, CO

Sound is Our Business

WebsitePhone3 offices7 projects5 leaders3 credentialsFounded 1979

Project: Waukee Performing Arts Center

Service: Acoustical ConsultingService: Architectural AcousticsService: Performing Arts AcousticsIndustry: Arts & CultureIndustry: CommercialType: Acoustic Consulting+37 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

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

IWA Technical Services Inc.

Dallas, TX

It's more than Push-To-Talk

WebsitePhone1 office1 leaders3 credentialsSize Estimate: 2-5 employeesUpdated Jun 2026

Service detail: RF Engineering & Communications System Design

Service: RF Engineering & Communications System DesignService: NEPA StudiesService: RF Interference Analysis and MitigationIndustry: TelecommunicationsIndustry: Public SafetyType: Telecom / RF Engineering+30 more

J&A Engineering

Atlanta, GA

Innovative audio visual, IT and security design creates value for owners and brings buildings to life for users.

Website1 office8 projects6 leaders9 credentialsSize Estimate: 10-49 employeesUpdated Jun 2026

Project: Mercedes-Benz Stadium

Service: Network & Communications DesignService: Structured Cabling & Fiber Optic SystemsService: Infrastructure Planning & CoordinationIndustry: HealthcareIndustry: Justice & CorrectionsType: Electrical Engineering+27 more

Justice Engineering Corp.

Los Angeles, CA

Communications - Security - Fire Alarm

Website1 office12 projectsFounded 2000Updated Jun 2026

Project: Sacramento County Security Systems Upgrade

Service: Security Systems EngineeringService: PLC-based locking and gate controlsService: Touchscreen security control systemsIndustry: Justice & CorrectionsIndustry: Public SafetyType: Architecture & Engineering+31 more

OLM Engineers, LLC

Alpharetta, GA

An Electrical Engineering Company

WebsitePhone1 office4 credentialsSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Power Distribution & System Analysis

Service: Power Distribution & System AnalysisService: Interior Power DistributionService: Medium Voltage DesignIndustry: CommercialIndustry: RetailType: Electrical Engineering+29 more

Quality Consulting Engineers, PLLC

Indian Land, SC

Electrical, fire alarm, telecommunications, security, and audiovisual engineering

Website1 office7 credentialsFounded 2013Updated Jun 2026

Service detail: Studies & Assessments

Service: Studies & AssessmentsService: Facility Conditions AssessmentsService: Feasibility StudiesIndustry: CommercialIndustry: AviationType: Electrical Engineering+41 more

R&N Systems Design LLC

Memphis, TN

Security systems design for detention, justice, and correctional facilities

WebsitePhone1 office4 leadersUpdated Jun 2026

Service detail: Detention Security Systems Design

Service: Detention Security Systems DesignService: PLC Based Locking Control SystemsService: Touch Screen Graphic Control SystemsIndustry: Justice & CorrectionsIndustry: Public SafetyType: Electrical Engineering+25 more

RWB Consulting Engineers

Dallas, TX

Design Consultants for High-Performing Buildings

WebsitePhone2 offices5 projects6 credentials3 publicationsFounded 1986

Project: Eagle Mountain High School No. 4 - Sky Bridge

Service: Mechanical EngineeringService: HVAC System DesignService: Central Utility Plant DesignIndustry: CommercialIndustry: Data CentersType: MEP+43 more