Public engineering firm directory

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120 Degreez

Los Angeles, CA

Redefining Technical Excellence

Website1 officeUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Electrical EngineeringService: Plumbing EngineeringIndustry: CommercialIndustry: HospitalityType: MEP+7 more

1350 Design, LLC

Show Low, AZ

Details Are Important. Innovate Past Expectation.

WebsitePhone1 office4 projects1 leadersUpdated Jun 2026

Project: NEBIS (Neural Edge Based Intelligence System)

Service: Edge-Based Autonomy & Kill-Web IntegrationService: Distributed AutonomyService: Manned-Unmanned Teaming (MUM-T)Industry: DefenseIndustry: AerospaceType: Defense Engineering+6 more

2M Associates, LLC

Dallas, TX

Best Engineering Solutions to Build Your Dreams

WebsitePhone1 office5 projects2 credentialsFounded 2009Updated Jun 2026

Project: DFW Airport Southwest End Around Taxiway - Drainage Design

Service: Water and Wastewater DesignService: Hydrologic/hydraulic AnalysisService: ModelingIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+57 more

2RW Consultants, Inc.

Charlottesville, VA

Energy by Design

WebsitePhone3 offices10 projects6 leaders32 credentialsFounded 1985

Project: JMU Carrier Library Renovation, Restoration, and Expansion

Service: MEP/FP Engineering DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: EducationIndustry: GovernmentType: MEP+37 more

360 Energy Group

Chicago, IL

Your Energy Use Simplified

WebsitePhone1 office3 projectsUpdated Jun 2026

Project: Schaumburg Park District Energy Efficiency Study

Service: Program Design and ImplementationService: Public Sector ProgramsService: Geothermal Heat Pump DeploymentIndustry: GovernmentIndustry: UtilitiesType: Power & Utility Engineering+19 more

3Bears Technical Services

Hixson, TN

Experts in Nuclear Operations and Waste Management Solutions

WebsitePhone1 office2 credentialsUpdated Jun 2026

Service detail: Engineering and Project Management

Service: Engineering and Project ManagementService: Mechanical EngineeringService: Electrical EngineeringIndustry: NuclearIndustry: Environmental & RemediationType: Environmental Engineering+31 more

3D Design & Engineering

Houston, TX

Innovation, Integrity & Quality - All of your A&E, Surveying and Utility Locating needs under one roof.

WebsitePhone1 office4 projects2 leaders3 credentialsUpdated Jun 2026

Project: Superbowl LI Cellular Network Modifications

Service: A&E ServicesService: Site Feasibility StudiesService: Erosion and Sediment Control PlanningIndustry: Oil & GasIndustry: TelecommunicationsType: Architecture & Engineering+30 more

3J Consulting, Inc.

Your Partner in Civil Engineering & Community Planning

Website8 projects6 leaders6 credentialsFounded 2009Updated Jun 2026

Project: Sandy Vision and Comprehensive Plan

Service: Civil EngineeringService: Grading & DrainageService: Utility DesignIndustry: Land DevelopmentIndustry: TransportationType: Civil Engineering+39 more

3RE Engineering LLC

Shawnee, KS

Specialized Electrical Engineering for Water & Wastewater Infrastructure

WebsitePhone1 office1 leaders5 credentialsSize Estimate: 1-5 employeesUpdated Jun 2026

Service detail: Electrical Design Service

Service: Electrical Design ServiceService: Power Distribution System DesignService: Equipment Specification & GroundingIndustry: WastewaterIndustry: Water SupplyType: Electrical Engineering+11 more

3T Design & Development LLC

Kansas City, MO

Air. Land. Water.

WebsitePhone1 office1 leadersFounded 2009Updated Jun 2026

Service detail: Air Quality and Environmental Compliance

Service: Air Quality and Environmental ComplianceService: Air Quality Permitting SupportService: Regulatory Review and ComplianceIndustry: TransportationIndustry: Water SupplyType: Civil Engineering+25 more

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

83 Ordinal Group

Pine Bluff, AR

Innovative Agritech & Engineering Solutions

WebsitePhone1 officeSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Agritech and Renewable Energy Engineering

Service: Agritech and Renewable Energy EngineeringService: Agrivoltaics and Clean Energy IntegrationService: Controlled Environment Agriculture SystemsIndustry: Renewable EnergyIndustry: AgricultureType: Owner's Engineer+22 more

A D Marble Co Inc

King of Prussia, PA

Environmental, Cultural, and Water Resources Engineering

Website4 offices5 leadersUpdated Jun 2026

Service detail: Environmental Engineering

Service: Environmental EngineeringService: Environmental Clearance and PermittingService: Construction Site Environmental ServicesIndustry: FederalIndustry: Power GenerationType: Environmental Engineering+14 more

A&J Consulting Engineering Services, P.C.

Clifton, NJ

A&J Consulting Engineering Services, P.C. is a full-service MEP consulting engineering practice headquartered in Clifton, New Jersey. Founded in 1988 by Jay Agarwal, P.E., A&J delivers mechanical, electrical, and plumbing systems design, pharmaceutical validation and commissioning, construction administration, sustainable design, and high-technology systems consulting. Clients span the pharmaceutical, biotechnology, commercial, educational, governmental, industrial, and religious sectors across the New York-New Jersey region.

WebsitePhone1 office5 projects1 leadersFounded 1988Updated Jun 2026

Project: Validation of an Aseptic Vial Filling Line

Service: MEP Systems DesignService: HVACService: Electrical SystemsIndustry: PharmaceuticalIndustry: Life SciencesType: MEP+40 more

A.D.A. Engineering, Inc.

Doral, FL

Applying the Latest Technology

WebsitePhone2 offices1 credentialsFounded 1981Size Estimate: 25-100 employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Land/Site DevelopmentService: Canal Bank StabilizationIndustry: WastewaterIndustry: Water SupplyType: Civil Engineering+40 more

A.J. Adam Engineering, LLC

Towson, MD

Quality MEP Engineering Services You Can Trust

WebsitePhone1 officeFounded 2011Updated Jun 2026

Service detail: MEP Engineering Design

Service: MEP Engineering DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: HealthcareIndustry: Senior LivingType: MEP+44 more

A2 Efficiency

Santa Rosa, CA

Building performance consulting, from first principles to policy.

WebsitePhone1 officeUpdated Jun 2026

Service detail: MEP Basis of Design & Performance Consulting

Service: MEP Basis of Design & Performance ConsultingService: Early-Stage Energy & Comfort ModelingService: Mechanical System Concept & Basis of DesignIndustry: CommercialIndustry: EducationType: MEP+18 more

A2Z Engineering, PLLC

Kalispell, MT

Civil and Structural Engineers Montana

WebsitePhone1 office2 projects1 leadersFounded 1986Updated Jun 2026

Project: Flathead Lake Engineered Septic System

Service: PowerService: Substation DesignService: Transmission Line DesignIndustry: Electric UtilitiesIndustry: Land DevelopmentType: Civil Engineering+19 more

AAI Environmental Corporation

Ashland City, TN

Professional environmental site assessments and due diligence services nationwide

WebsitePhone1 office6 projects1 credentialsFounded 1995Updated Jun 2026

Project: Windmill Farm Initial Planning Study

Service: Phase I Environmental Site Assessment (ESA)Service: Phase II Environmental Site AssessmentService: Phase III Environmental AssessmentIndustry: CommercialIndustry: ResidentialType: Environmental Engineering+34 more

ABQ Engineering, Inc.

Albuquerque, NM

Cost-effective, one-stop engineering, surveying, and planning services

WebsitePhone1 office5 projects1 leadersSize Estimate: 10-49 employeesUpdated Jun 2026

Project: Los Alamos County Golf Course Community Building

Service: Civil EngineeringService: Drainage and Hydrology AnalysisService: Grading and Drainage DesignIndustry: CommercialIndustry: RetailType: Civil Engineering+38 more

ADV-SOC, Inc.

San Diego, CA

Mission-Driven.

WebsitePhone1 office9 projects2 leadersFounded 2012Updated Jun 2026

Project: Naval Air Station North Island Soil Investigation

Service: Environmental ServicesService: Phase I and Phase II Environmental Site AssessmentsService: Underground Storage Tank Assessment and ClosureIndustry: FederalIndustry: DefenseType: Architecture & Engineering+39 more

AE Works

Sewickley, PA

We Make Building Projects a Better Value

WebsitePhone2 offices15 projects1 leaders23 credentials3 publications

Project: Bay Pines VA Medical Center, Electronic Health Records Modernization

Service: Architecture & Interior DesignService: Programming and Test FitsService: Master Planning and Space ConsolidationIndustry: CommercialIndustry: Multifamily ResidentialType: Architecture & Engineering+46 more

AE2S

Bismarck, ND

Empowering People. Enhancing Lives.

Website22 offices6 leadersFounded 1991Updated Jun 2026

Service detail: Water and Wastewater Engineering

Service: Water and Wastewater EngineeringService: WaterService: WastewaterIndustry: Automation & ControlsIndustry: Environmental & RemediationType: Civil Engineering+29 more

AED Energy Services

Wyomissing, PA

Designing America's Energy Lifelines

WebsitePhone4 offices9 leaders4 credentialsFounded 1989Updated Jun 2026

Service detail: Chemical and Process Design

Service: Chemical and Process DesignService: Documentation and AnalysisService: Specialized CalculationsIndustry: Oil & GasIndustry: PetrochemicalType: Chemical Engineering+64 more