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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3 Phase Associates LLC

Chattanooga, TN

Electrical Engineering and Consulting Services

Website1 office2 credentialsFounded 2016
Service: Electrical EngineeringService: Power System CalculationsIndustry: UtilitiesType: Electrical Engineering+33 more

3D Design & Engineering

Houston, TX

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

WebsitePhone1 office4 projects
Service: A&E ServicesService: Site Feasibility StudiesIndustry: Oil & GasType: Architecture & Engineering+32 more

3U Technologies, LLC

Conroe, TX

Business consultant services engineered to withstand any condition

WebsitePhone1 office2 projects
Service: International Business ConsultingService: Market analysesIndustry: Oil & GasType: Marine Engineering+40 more

3Vi, Inc.

San Ramon, CA

Engineering Excellence for a Sustainable Future

WebsitePhone3 offices1 leaders
Service: Systems Engineering & IntegrationService: SCADA and Control SystemsIndustry: TransitType: Electrical Engineering+20 more

A & S Engineers, Inc.

San Francisco, CA

Full-service Mechanical, Electrical, Plumbing Engineering and Commissioning Firm

Website1 office6 leadersUpdated Jun 2026
Service: Mechanical EngineeringService: HVAC & Hydronic SystemsIndustry: Multifamily ResidentialType: MEP+20 more

A Squared Plus Engineering Support Group, LLC

Finksburg, MD

A Squared Plus Engineering Support Group, LLC (A2+ESG) is an engineering practice that specializes in mechanical, electrical, plumbing, and information transportation system design. It delivers planning, engineering support, system analysis, and inspections for commercial, residential, industrial, and institutional facilities, including specialized experience in public safety and correctional environments.

WebsitePhone1 office11 projects
Service: MEP DesignService: Sustainable DesignIndustry: ResidentialType: MEP+27 more

A. G. Consulting Engineering, PC

New York, NY

A. G. Consulting Engineering, PC is an established MEP and construction management consulting practice. It offers mechanical, electrical, plumbing, fire protection, fire engineering, LEED consulting, special inspection, and construction management services for infrastructure, institutional, and public works projects.

WebsitePhone5 offices8 projects
Service: MEP EngineeringService: Mechanical and HVAC Systems DesignIndustry: TransitType: MEP+19 more

A.P. Consulting Engineers, DPC

Elmont, NY

MEP, Lighting, Energy, and Life Safety Engineering

WebsitePhone2 offices8 credentials
Service: MEP ServicesService: Mechanical DesignIndustry: Arts & CultureType: MEP+20 more

A.W. Schultz Inc.

Shawnee, KS

Trusted Engineering and Integration Since 1977

WebsitePhone1 office3 credentials
Service: Process Control and SCADA SystemsService: Process Visualization & HMI/OITIndustry: Water SupplyType: Automation & Controls+27 more

ADCOMM Engineering LLC

Woodinville, WA

We Bridge The Gap Between Operations and Technology.

WebsitePhone2 offices1 credentials
Service: Systems EngineeringService: Public Safety Systems EngineeringIndustry: Public SafetyType: Owner's Engineer+32 more

ADO Engineering, Inc.

South Elgin, IL

Specialized electrical engineering for aviation, transportation, and facilities projects

WebsitePhone1 officeFounded 2011
Service: Electrical Systems DesignService: Facility Electrical EngineeringIndustry: AviationType: Electrical Engineering+11 more

ADP Resources

Dallas, OR

Engineering Services: Agility. Accuracy. Integrity.

WebsitePhone1 office8 leaders
Service: Outside and Inside Plant ServicesService: Makeready Engineering NESC and GO95Industry: TelecommunicationsType: Telecom / RF Engineering+29 more

AE Design

Denver, CO

All things electrical

WebsitePhone1 office8 projects
Service: Electrical EngineeringService: Electrical Engineering DesignIndustry: CommercialType: Electrical Engineering+24 more

AE Works

Sewickley, PA

We Make Building Projects a Better Value

WebsitePhone2 offices15 projects
Service: Architecture & Interior DesignService: Programming and Test FitsIndustry: CommercialType: Architecture & Engineering+48 more

AE2S

Bismarck, ND

Empowering People. Enhancing Lives.

Website22 offices6 leadersFounded 1991
Service: Water and Wastewater EngineeringService: WaterIndustry: Automation & ControlsType: Civil Engineering+31 more

AGPROfessionals

Greeley, CO

Professional problem-solvers achieving clients' goals and advocating their success

WebsitePhone2 offices4 projects
Service: Agricultural EngineeringService: Site SelectionIndustry: AgricultureType: Civil Engineering+57 more

AHA Consulting Engineers

Burlington, MA

beyond engineering

WebsitePhone5 offices4 projects
Service: MEP/FP DesignService: Mechanical systemsIndustry: Research FacilitiesType: MEP+27 more

AIM Engineering Consultants, Inc.

Pleasanton, CA

Best-In-Class Engineering Expertise

WebsitePhone1 office3 projects
Service: Civil EngineeringService: Municipal Plan CheckingIndustry: TransportationType: Civil Engineering+43 more

AJT Engineering, Inc.

Cocoa, FL

Aviation architecture, engineering, and prefabricated air traffic control cab fabrication.

WebsitePhone1 office1 projects
Service: Air Traffic Control Tower DesignService: Siting Analyses and Feasibility StudiesIndustry: AviationType: Aviation Engineering+20 more

ALP Systems, Inc.

Waynesville, NC

ALP Systems, Inc. is a lightning protection engineering and installation firm in Waynesville, North Carolina, with over 30 years of experience. It provides engineering, consulting, and design services for structural lightning protection, grounding and bonding systems, and surge protection, certified by LPI Master Designers. ALP's technicians hold LPI Master Installer, LPI Journeyman Installer, and extensive OSHA safety credentials and serve commercial, residential, government, military, oil and gas, petrochemical, solar and wind energy, broadcasting, and communications sectors. It has completed projects in 43 states and internationally.

WebsitePhone1 office5 credentials
Service: Engineering, Consulting & DesignService: Site-specific EngineeringIndustry: Oil & GasType: Electrical Engineering+15 more

APEX Engineering

Los Gatos, CA

Responsive, reliable, and results-driven structural engineering.

WebsitePhone1 officeUpdated Jun 2026
Service: Buildings and FoundationsService: Structural Framing AssessmentIndustry: CommercialType: Structural Engineering+12 more

ARPE Engineering, LLC

Coral Gables, FL

Trusted Expertise in Mechanical, Electrical and Plumbing Engineering Design

WebsitePhone1 office10 projects
Service: Electrical Engineering ServicesService: Lighting DesignIndustry: ResidentialType: MEP+33 more

ARUSI, LLC

Phoenix, AZ

Powering Your Vision With 35 Years of Experience

WebsitePhone1 office2 projects
Service: Utility Engineering, Coordination & ConsultingService: System StudiesIndustry: Electric UtilitiesType: Electrical Engineering+23 more

ASUSE Incorporated

Tempe, AZ

Transform Your Vision Into Reality with ASUSE

WebsitePhone1 office1 projects
Service: Engineering DesignService: Power Distribution DesignIndustry: Power GenerationType: Design-Build+23 more