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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ATSI, Inc.

Amherst, NY

Changing the World Since 1977

WebsitePhone1 officeFounded 1977Size Estimate: 10-49 employeesUpdated Jun 2026

Service detail: Front-End Engineering & Design (FEED)

Service: Front-End Engineering & Design (FEED)Service: FEL-1: Conceptual Engineering & FeasibilityService: FEL-2: Planning & Specification DevelopmentIndustry: Renewable EnergyIndustry: ChemicalsType: Process Engineering+39 more

CMM Inc.

Hudson, OH

Premier Engineering Design, Construction Support, and Maintenance Services

WebsitePhone1 office8 leadersFounded 1998Updated Jun 2026

Service detail: Construction Management

Service: Construction ManagementService: Peer Review and DesignService: Constructability ReviewIndustry: IndustrialIndustry: CommercialType: Civil Engineering+65 more

Construction Engineering Group

Melbourne, FL

Sustainable, efficient engineering solutions designed with common-sense practices

WebsitePhone1 office3 projectsUpdated Jun 2026

Project: Melbourne City Hall

Service: Civil EngineeringService: Site Development & DesignService: Stormwater ManagementIndustry: CommercialIndustry: EducationType: Civil Engineering+30 more

E.C. Fennell, Inc.

West Palm Beach, FL

Electrical and mechanical engineering solutions for energy, utility, and infrastructure projects

WebsitePhone3 offices10 leadersSize Estimate: 100-199 employeesUpdated Jun 2026

Service detail: Power Delivery Engineering

Service: Power Delivery EngineeringService: Transmission LinesService: Distribution SystemsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+27 more

Electro Design Engineering, Inc.

Riverview, FL

Leaders in Quality Construction, Engineering and Automation

WebsitePhone5 offices3 projects1 credentialsFounded 1985Size Estimate: 300+ employees

Project: 23 MW Solar Array

Service: Engineering & Design ServicesService: Budget Cost EstimatesService: Power and Distribution SystemsIndustry: IndustrialIndustry: ManufacturingType: Electrical Engineering+36 more

IMDC, Inc.

Orlando, FL

Quality delivery of multidisciplinary engineering, construction management, and facility support services

WebsitePhone7 offices5 projects1 credentialsFounded 1983Updated Jun 2026

Project: NASA Testing Facility and Shelter Platform Design

Service: Engineering ServicesService: Electrical Systems DesignService: Mechanical and Piping DesignIndustry: CommercialIndustry: IndustrialType: Architecture & Engineering+35 more

InSynergy Engineering, Inc.

Honolulu, HI

To service our clients as if their projects are our own investments.

WebsitePhone1 office8 projectsSize Estimate: 72 employeesUpdated Jun 2026

Project: Kona Village Resort

Service: Mechanical EngineeringService: Air Conditioning RenovationService: Chilled Water Systems DesignIndustry: HealthcareIndustry: HospitalityType: MEP+35 more

Infrastructure Solution Services LLC

Melbourne, FL

Exceeding Expectations Every Time

WebsitePhone3 offices6 projectsUpdated Jun 2026

Project: Grant Street Water Reclamation Facility Improvements

Service: Water Resources EngineeringService: Water Supply and TreatmentService: Wastewater Collection and TreatmentIndustry: GovernmentIndustry: FederalType: Civil Engineering+54 more

L.L. Blue Engineering

Peachtree City, GA

Envision. Explore. Discover.

WebsitePhone1 office1 projects1 leadersUpdated Jun 2026

Project: Secure Server Room for Electric Utility

Service: Control System IntegrationService: SCADA & DCS EngineeringService: DesignIndustry: Power GenerationIndustry: Electric UtilitiesType: Electrical Engineering+43 more

NexGrade Engineering, LLC

Abilene, TX

Electrical, mechanical, and automation engineering consulting for industrial and commercial clients.

WebsitePhone1 office3 leaders9 credentialsUpdated Jun 2026

Service detail: Owner's Engineer

Service: Owner's EngineerService: Project Financing SupportService: Independent Engineering ReviewIndustry: Renewable EnergyIndustry: Water SupplyType: Automation & Controls+38 more

On-Board Engineering Corporation

East Windsor, NJ

Full-service EPCM partner with design-build capabilities for small to mid-sized industrial capital projects

WebsitePhone3 offices2 projects6 leaders1 credentialsFounded 1976

Project: Fortune 500 Oil and Gas Company - Long-Term EPCM Program

Service: Civil, Structural & Architectural EngineeringService: Civil & Site EngineeringService: Structural Engineering & ConsultingIndustry: IndustrialIndustry: ManufacturingType: EPC+30 more

Orion Engineers & Constructors

Mobile, AL

Enabling success and building relationships.

Website4 officesFounded 2001Updated Jun 2026

Service detail: Project Management

Service: Project ManagementService: Feasibility StudiesService: Front End Loading PackagesIndustry: Biomass & BioenergyIndustry: ChemicalsType: Architecture & Engineering+73 more

Petra Consultants

Lafayette, LA

Safe. Efficient. Proven.

Website1 office7 projects5 leadersFounded 1996Updated Jun 2026

Project: 4-Pile Jacket, Deck and Facilities Design

Service: Engineering ServicesService: Process ModelingService: P&ID DevelopmentIndustry: Oil & GasIndustry: MarineType: Civil Engineering+35 more

SAFE Consulting Services Corp.

Spokane, WA

Security and Fire Experts

WebsitePhone3 offices4 credentialsUpdated Jun 2026

Service detail: Signal Systems Engineering

Service: Signal Systems EngineeringService: Fire Alarm DesignService: Smoke Control Systems DesignIndustry: CommercialIndustry: Multifamily ResidentialType: Electrical Engineering+20 more

Sixty Mountain, PLLC

Kennewick, WA

Electrical consulting services

WebsitePhone1 office3 projects1 leadersUpdated Jun 2026

Project: Substation Commissioning Support

Service: Substation ServicesService: Panel Layout and DesignService: Ground and Lightning DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+43 more

Technical Consulting Group LLC

San Juan, PR

services for sustainable development

WebsitePhone1 office6 projects1 leadersFounded 1983Updated Jun 2026

Project: Study of Independent Water Supply Systems

Service: Environmental EngineeringService: ASTM Environmental Site AssessmentsService: RemediationIndustry: ChemicalsIndustry: Food & BeverageType: Architecture & Engineering+95 more

Waldemar S. Nelson & Co., Inc.

New Orleans, LA

Engineering is the Foundation of Civilization

WebsitePhone2 offices2 projects2 credentials2 publicationsFounded 1945

Project: Artemis II Space Mission Engineering

Service: Civil, Structural and Architectural EngineeringService: Civil Site and Infrastructure DesignService: Structural Engineering for Complex FacilitiesIndustry: Oil & GasIndustry: PetrochemicalType: Architecture & Engineering+34 more

Walsh Engineering Services

Idaho Falls, ID

Full-service engineering and analysis delivering high-quality, personalized services

WebsitePhone2 offices7 leaders1 credentialsFounded 2005Size Estimate: 100-200 employees

Service detail: Engineering Design & Analysis

Service: Engineering Design & AnalysisService: Custom Equipment Design & IntegrationService: ASME Pressure Vessel & Heat Exchanger DesignIndustry: NuclearIndustry: FederalType: Mechanical Engineering+27 more