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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AEIS

South Plainfield, NJ

Helping Build a Safer Infrastructure

WebsitePhone2 offices4 projects3 leaders2 credentialsFounded 2008

Project: LaGuardia Airport Redevelopment

Service: Construction Quality AssuranceService: Special and Critical InspectionsService: Non-Destructive TestingIndustry: AviationIndustry: AirportsType: Materials Testing+15 more

APEC Engineering, Inc.

Somers, MT

APEC Engineering, Inc. is an innovative, locally owned and operated civil engineering firm licensed in Montana and serving northwest Montana since 1998. Headquartered in Somers, Montana, APEC's team of highly qualified professionals provides civil engineering services including water resources, land development, environmental permitting, planning, and construction engineering to clients across Montana and North Dakota. APEC Engineering is committed to efficient design, modern capabilities, and hands-on consulting, serving communities in Kalispell, Bigfork, Whitefish, Columbia Falls, and throughout the region.

WebsitePhone1 office2 projectsFounded 1998Updated Jun 2026

Project: The Wilderness Club

Service: Water ResourcesService: Community water and sewer designService: Storm water managementIndustry: Land DevelopmentIndustry: Water SupplyType: Civil Engineering+43 more

Alliance Consulting, Inc.

Beaver, WV

Professional Consulting Services

WebsitePhone2 offices6 projects15 credentialsFounded 2001Updated Jun 2026

Project: Flat Top Lake Dam

Service: Civil EngineeringService: Site Development ServicesService: Structural Engineering ServicesIndustry: MiningIndustry: Oil & GasType: Civil Engineering+53 more

Alliance Geotechnical Group, Inc.

Dallas, TX

Accredited Laboratory Testing.

WebsitePhone6 offices21 leaders12 credentialsFounded 1999Size Estimate: 150+ employees

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface ExplorationService: Geotechnical InvestigationsIndustry: GovernmentIndustry: EducationType: Geotechnical Engineering+35 more

American Engineering Laboratories, Inc.

La Habra, CA

Providing High Quality Results in a Cost Effective and Timely Manner

WebsitePhone5 offices9 leaders5 credentialsUpdated Jun 2026

Service detail: Construction Inspection

Service: Construction InspectionService: Masonry Inspections and TestingService: Batch Plant InspectionsIndustry: EducationIndustry: GovernmentType: Civil Engineering+28 more

Applied Engineering Services, Inc.

Ridgway, CO

We Know How

WebsitePhone3 officesFounded 1992Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Mechanical System DesignService: HVAC Systems DesignIndustry: AerospaceIndustry: NuclearType: Civil Engineering+46 more

Applied Technical Services

Founded in 1967, Applied Technical Services (ATS) is a nationwide testing, inspection, and certification (TIC) provider with expertise in structural engineering, forensic engineering, calibration, and materials testing. ATS serves more than 15 industries including aerospace, automotive, defense, healthcare, and manufacturing, evaluating raw materials, individual components, and complex systems through metallurgy and materials testing, chemical analysis, nondestructive testing, mechanical testing, and calibration services. ATS joined SGS, the world's leading TIC company, while continuing to operate under its own brand and service standards.

WebsiteFounded 1967Updated Jun 2026

Service detail: Calibration

Service: CalibrationService: Avionics CalibrationService: Computed TomographyIndustry: AerospaceIndustry: AutomotiveType: Structural Engineering+44 more

Atlas Technical Consultants

Denver, CO

Uniting People, Places and Possibilities

Website3 offices4 projects10 leaders3 credentialsSize Estimate: 3,300+ employeesUpdated Jun 2026

Project: Foresthill Bridge Weld Inspections

Service: Testing, Inspection and CertificationService: Pavement TestingService: Weld and Materials InspectionIndustry: InfrastructureIndustry: IndustrialType: Environmental Engineering+18 more

C3S, Inc.

Houston, TX

Experts in the Field

WebsitePhone1 office3 projects1 leaders7 credentialsFounded 1991

Project: Sam Houston Ship Channel Bridge Program

Service: Project Planning Phase ServicesService: Sourcing and QualifyingService: Concrete and Cement EvaluationIndustry: CommercialIndustry: EducationType: Civil Engineering+26 more

CHA Consulting, Inc.

Albany, NY

Creating solutions. Helping people. Improving our world.

Website2 offices4 projects10 leaders5 credentialsFounded 1952Size Estimate: 2,100+ employees

Project: I-91 Interchange 29 Flyover Bridge and Charter Oak Bridge

Service: Transportation SolutionsService: Bridge design, analysis, and reconstructionService: Highway and roadway designIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+96 more

Caesar Engineering D.P.C.

Troy, NY

Quality Solutions to Complex Problems

WebsitePhone2 offices7 projects2 leaders1 credentialsFounded 2019

Project: Residential Septic System Design and Install

Service: Structural EngineeringService: Structural Engineering Plans and BlueprintsService: Building and Home Structural InspectionsIndustry: CommercialIndustry: Historic PreservationType: Civil Engineering+33 more

Certerra

Materially Better.

Website5 projects5 leadersSize Estimate: 1,000-4,999 employeesUpdated Jun 2026

Project: Providing Comprehensive Geotechnical Engineering Services for South Carolina's Largest Economic Development Project

Service: Testing, Inspection & CertificationService: EngineeringService: Preliminary Site Due DiligenceIndustry: TransportationIndustry: EducationType: Materials Engineering+23 more

Citadel Engineering Company

Salt Lake City, UT

Where Precision Meets Reliability

WebsitePhone1 office15 credentialsFounded 2015Updated Jun 2026

Service detail: Engineering Design

Service: Engineering DesignService: Feasibility Studies and Project PlanningService: Detailed Design and AnalysisIndustry: Oil & GasIndustry: Power GenerationType: Process Engineering+53 more

Crane Environmental Services, LLC

Evansville, IN

Working Together to Achieve Your Goals

WebsitePhone2 offices4 projects4 credentialsUpdated Jun 2026

Project: I-69 Ohio River Crossing Construction Inspection

Service: Environmental Site AssessmentsService: Phase I Environmental Site AssessmentsService: Phase II Environmental Site AssessmentsIndustry: Environmental & RemediationIndustry: ResidentialType: Environmental Engineering+39 more

DH Glabe & Associates

Colorado, CO

Nationwide Leader in Structural & Construction Engineering

WebsitePhone1 officeFounded 1985Size Estimate: 5-25 employeesUpdated Jun 2026

Service detail: Construction Engineering

Service: Construction EngineeringService: Bridge Falsework EngineeringService: Concrete Shoring EngineeringIndustry: CommercialIndustry: InfrastructureType: Structural Engineering+27 more

DMAero, LLC

Warner Robins, GA

Mission-ready engineering

WebsitePhone3 offices2 projects1 credentialsUpdated Jun 2026

Project: NextGen SMP Engineering Services

Service: Systems Engineering and IntegrationService: System designService: COTS and custom system integrationIndustry: DefenseIndustry: AerospaceType: Defense Engineering+34 more

DMY Engineering Consultants Inc.

Chantilly, VA

Reliable. Innovative.

WebsitePhone3 offices10 projects1 credentialsFounded 2009Updated Jun 2026

Project: Dulles Corridor Silver Line Metrorail Project Phase II

Service: Geotechnical EngineeringService: In-House Geotechnical Drilling and TestingService: Foundation Analysis and DesignIndustry: TransportationIndustry: WastewaterType: Geotechnical Engineering+23 more

Encompassed Engineering, LLC

Aiken, SC

Ignite action. Extinguish risk.

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Fire Protection Engineering

Service: Fire Protection EngineeringService: Fire Protection SystemsService: Hazard AnalysisIndustry: FederalIndustry: NuclearType: Fire Protection Engineering+17 more

Environmental Engineering Consultants, Inc.

Tampa, FL

History of Proven Results. Future of Innovative Solutions

WebsitePhone1 office10 leadersFounded 1979Size Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Civil Engineering Site Design

Service: Civil Engineering Site DesignService: Site Design and PlanningService: Commercial Construction PermittingIndustry: CommercialIndustry: ResidentialType: Civil Engineering+60 more

FST Technical Services

Mission Critical. Mission Assured.

Website1 leadersFounded 1984Size Estimate: 400 employeesUpdated Jun 2026

Service detail: Quality Assurance and Quality Control

Service: Quality Assurance and Quality ControlService: Proactive Quality AssuranceService: In-Field Quality ControlIndustry: SemiconductorsIndustry: Life SciencesType: Materials Testing+22 more

FloorSciences

Atlanta, GA

Technical Flooring Consulting & Concrete Testing

WebsitePhone1 office4 projects1 leaders11 credentials2 publications

Project: Fort Belvoir Community Hospital Flooring Evaluation

Service: Consulting and Expert ServicesService: ConsultingService: Expert WitnessIndustry: CommercialIndustry: RetailType: Forensic Engineering+57 more

Hayre McElroy & Associates, LLC

Redmond, WA

Hayre McElroy & Associates, LLC is a special inspection, materials testing, and engineering firm serving public and private clients throughout the Pacific Northwest, Alaska, Hawaii, and Texas. Its accredited full-service laboratory tests soil, aggregate, hot-mix asphalt, concrete, masonry, shotcrete, fireproofing, and structural steel, and provides geotechnical strength and corrosion potential testing. HMA's licensed engineers and certified multi-discipline inspectors support projects from small municipal developments to large military and transit programs, complementing testing work with civil, electrical, fiber optics, code compliance, TESC, and construction management services.

WebsitePhone3 offices4 credentialsUpdated Jun 2026

Service detail: Special Inspection

Service: Special InspectionService: Materials TestingService: Geotechnical EngineeringIndustry: InfrastructureIndustry: GovernmentType: Geotechnical Engineering+11 more

Howland Engineering and Surveying Co.

Laredo, TX

Excellence in Engineering & Surveying Since 1922

WebsitePhone3 offices11 projects3 leaders6 credentialsFounded 1922

Project: Alexander 9th Grade Center

Service: SurveyingService: ALTA SurveysService: TxDOT SurveyingIndustry: Oil & GasIndustry: Renewable EnergyType: Civil Engineering+63 more

KTA-Tator, Inc.

Pittsburgh, PA

Because Integrity Mattersâ„¢

WebsitePhone2 offices4 projects3 leaders3 credentialsFounded 1949

Project: Queen Isabella Causeway

Service: Coatings InspectionService: QA Paint Inspection Services for Facility OwnersService: QC Paint Inspection Services for ContractorsIndustry: InfrastructureIndustry: Oil & GasType: Materials Testing+52 more