Public engineering firm directory

Find engineering consulting firms by capability and location.

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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

Acker & Associates

Green Bay, WI

Consulting engineering, audits and analysis

WebsitePhone1 office4 projects1 leaders3 credentials3 publications

Project: Curwood Gas-Fired Make-Up Air System Design

Service: Condensation & Moisture AnalysisService: Building Water Vapor TransmissionService: Blower Door & Infrared DiagnosticsIndustry: Pulp & PaperIndustry: IndustrialType: Mechanical Engineering+23 more

Advanced Integration Group, Inc.

McKees Rocks, PA

Be in Control.

WebsitePhone1 office2 projects5 credentialsUpdated Jun 2026

Project: Lock and Dam Control Systems - Ohio River

Service: Control Systems Design and ImplementationService: PLC ProgrammingService: SCADA DevelopmentIndustry: Power GenerationIndustry: ManufacturingType: Automation & Controls+37 more

Airflow Sciences Corporation

Livonia, MI

Engineered CFD Solutions

WebsitePhone1 officeFounded 1975Updated Jun 2026

Service detail: Computational Fluid Dynamics (CFD) Modeling

Service: Computational Fluid Dynamics (CFD) ModelingService: Combustion ModelingService: Dispersion ModelingIndustry: Emissions ControlIndustry: Power GenerationType: Mechanical Engineering+53 more

Alliance Automation & Control, Inc.

Rogersville, AL

No project too large, no requirement too detailed.

WebsitePhone1 office1 credentialsFounded 2000Updated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Electrical DesignService: Automation & ControlsIndustry: AutomotiveIndustry: ChemicalsType: Automation & Controls+12 more

Alliance Engineers & Project Consultants

Beaumont, TX

Multidisciplined EPCM

WebsitePhone1 office5 projects1 leadersSize Estimate: 50-200 employeesUpdated Jun 2026

Project: Bringing Ground-Breaking Water-from-Air Technology to Market

Service: Project DevelopmentService: Phased Front-End LoadingService: Front-End Engineering DesignIndustry: Carbon CaptureIndustry: ChemicalsType: Automation & Controls+43 more

Alliance Technical Group

Decatur, AL

Alliance Technical Group is a full-service environmental services company founded in 2000 in Decatur, Alabama, with over 2,200 employees and more than 60 testing and laboratory locations across the United States and Canada. Alliance helps industrial, manufacturing, energy, and government clients achieve environmental compliance through on-site testing and monitoring, laboratory testing and analysis, and regulatory consulting. The company operates 110-plus mobile laboratories and delivers services across stack testing, LDAR, ambient air monitoring, CEMS, and environmental consulting.

WebsitePhone1 office4 leadersFounded 2000Updated Jun 2026

Service detail: Environmental Compliance

Service: Environmental ComplianceService: Regulatory StrategyService: Compliance AuditsIndustry: IndustrialIndustry: ChemicalsType: Environmental Engineering+19 more

Apex Engineering, PLLC

Calvert City, KY

Apex Engineering, PLLC is a full-service multi-discipline engineering firm headquartered in Calvert City, Kentucky, incorporated in 1974. Through its family of companies - Apex Controls Specialists and Apex Modular Extrusion Systems - it provides engineering, automation, and design-build services for industrial clients. Clients include major producers of specialty chemicals, polymers, refrigerants, nonferrous metals, coal, aggregates, electric power, rubber, elastomer products, pulp, and paper.

WebsitePhone2 officesFounded 1974Updated Jun 2026

Service detail: Specialty Engineering

Service: Process EngineeringService: Civil EngineeringService: Structural EngineeringIndustry: ChemicalsIndustry: MetalsType: Civil Engineering+35 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

Arnold & Associates, Inc.

Roswell, GA

Arnold & Associates, Inc. (A&A) is an Operations and Maintenance (O&M) engineering consulting practice founded in 1988 and based in Roswell, Georgia. It provides professional engineering, training, technical O&M consulting, and staff support services. Its capabilities serve industrial and utility systems, steam and electric power generation, building HVAC systems, and similar facility operations. The practice specializes in the efficient management and utilization of personnel, energy, rotating equipment, boilers, steam and combustion turbines, and diesel-engine-driven components. It also offers technical recruiting, energy conservation surveys, and professional power engineering licensing preparation seminars.

Website1 office2 credentialsFounded 1988Updated Jun 2026

Service detail: Operations & Maintenance Consulting

Service: Operations & Maintenance ConsultingService: Procedures Review and UpdatingService: O&M Personnel EvaluationsIndustry: Power GenerationIndustry: Oil & GasType: Mechanical Engineering+29 more

Autologic LLC

North Chesterfield, VA

Electrical and Controls Engineering, Design, & Programming Services

WebsitePhone2 offices4 projects5 leaders2 credentialsFounded 2001

Project: Fiberight BioFuel Recycling Facility - Turnkey Control System

Service: Electrical and Controls EngineeringService: Electrical DesignService: Control Panel DesignIndustry: MiningIndustry: Power GenerationType: Automation & Controls+45 more

BCP Engineers & Consultants

Metairie, LA

Bridging the Gap Between Design and Operations

WebsitePhone1 office12 leadersFounded 1981Updated Jun 2026

Service detail: Engineering & Project Management

Service: Engineering & Project ManagementService: Engineering ConsultingService: Outage ManagementIndustry: NuclearIndustry: Power GenerationType: Power & Utility Engineering+25 more

Bell Design Company

Bingen, WA

Your Trusted Engineering Partner in the Pacific Northwest

WebsitePhone1 office5 leaders2 credentialsFounded 1994Updated Jun 2026

Service detail: Water Systems Engineering

Service: Water Systems EngineeringService: Water System, Pump Station & PRV Vault DesignService: Water Treatment DesignIndustry: ResidentialIndustry: CommercialType: Civil Engineering+88 more

Benchmark, Inc.

Cedar Rapids, IA

Your Trusted Partner in Facility Asset Management

WebsitePhone2 offices3 credentialsUpdated Jun 2026

Service detail: Facility Asset Management & Consulting

Service: Facility Asset Management & ConsultingService: Roof ConsultingService: Roof EvaluationIndustry: PharmaceuticalIndustry: Pulp & PaperType: Owner's Engineer+13 more

Bio-Process Group

West Lafayette, IN

Process Design and Improvement for Biorefinery Systems

Website1 office3 projects2 leadersFounded 1984Updated Jun 2026

Project: Orange Peel Waste Biorefinery

Service: Contract Research & DevelopmentService: Lab Scale ValidationService: Technology Scale-Up & PilotingIndustry: AgricultureIndustry: Biomass & BioenergyType: Process Engineering+18 more

Bridge Gap Engineering LLC

Expertise you can rely on. Partnership you can trust.

Website1 leadersFounded 2009Size Estimate: 50-249 employeesUpdated Jun 2026

Service detail: Process and Commissioning Services

Service: Process and Commissioning ServicesService: Mass and Heat Balance AuditsService: Commissioning and StartupIndustry: MiningIndustry: Aggregates & QuarryingType: Owner's Engineer+19 more

Bridgestone Associates, Ltd.

Chadds Ford, PA

A Boutique Energy Consulting Firm

WebsitePhone1 office1 leadersFounded 1991Updated Jun 2026

Service detail: Energy Consulting & Advisory

Service: Energy Consulting & AdvisoryService: Energy Facility Feasibility EvaluationsService: Energy and Infrastructure Investment Due DiligenceIndustry: Power GenerationIndustry: Renewable EnergyType: Power & Utility Engineering+38 more

CE Engineers Inc.

Portland, OR

Controls and Electrical Engineering

WebsitePhone1 office7 projects3 leadersFounded 2006Size Estimate: 1-10 employees

Project: Canter Infeed Line Upgrade

Service: Controls and Automation EngineeringService: PLC ProgrammingService: HMI ProgrammingIndustry: GovernmentIndustry: IndustrialType: Electrical Engineering+23 more

Carroll Daniel Construction

Gainesville, GA

Planners, Builders, Partners

Website6 offices6 projects7 credentialsUpdated Jun 2026

Project: Forsyth County Arts and Learning Center

Service: Site SelectionService: Engineering & ArchitectureService: ProcurementIndustry: ManufacturingIndustry: ChemicalsType: Architecture & Engineering+19 more

Cintar Inc.

Glenshaw, PA

Multidisciplinary Engineering & Consulting Services

Website1 office1 projects7 credentials5 publicationsFounded 1983Size Estimate: 100+ employees

Project: ATI Shanghai STAL Project

Service: Civil & Structural EngineeringService: Civil EngineeringService: Structural EngineeringIndustry: MetalsIndustry: Power GenerationType: Civil Engineering+31 more

Clear Process Engineering & Technology

Covington, LA

Boiler, combustion, thermal, and steam systems engineering.

WebsitePhone1 office4 projects9 leadersFounded 2015Updated Jun 2026

Project: BFB boiler for high-moisture biomass - South America

Service: Energy AuditsService: Boiler Efficiency EvaluationService: Loss and Opportunity RankingIndustry: Power GenerationIndustry: Biomass & BioenergyType: Process Engineering+74 more

ClearStream Environmental

Sandy, UT

Engineered Solutions for Water and Wastewater Treatment

WebsitePhone1 officeFounded 2002Updated Jun 2026

Service detail: Process Design and Engineering

Service: Process Design and EngineeringService: Municipal Water TreatmentService: Municipal Wastewater TreatmentIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+27 more

Complete Project Solutions, Inc.

Pasadena, CA

Engineering project vision into reality

WebsitePhone2 officesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site DevelopmentService: Grading And UtilitiesIndustry: CommercialIndustry: RetailType: Civil Engineering+54 more

Corish Engineering

Linden, VA

Mechanical Engineering Services

WebsitePhone1 office1 leadersFounded 2001Size Estimate: 1-4 employeesUpdated Jun 2026

Service detail: Industrial Piping Systems

Service: Industrial Piping SystemsService: Aviation Fueling InfrastructureService: Fuel Terminal and Pipeline SystemsIndustry: Oil & GasIndustry: AviationType: Mechanical Engineering+17 more