Public engineering firm directory

Find engineering consulting firms by capability and location.

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3Vi, Inc.

San Ramon, CA

Engineering Excellence for a Sustainable Future

WebsitePhone3 offices1 leadersUpdated Jun 2026

Service detail: Systems Engineering & Integration

Service: Systems Engineering & IntegrationService: SCADA and Control SystemsService: Communications SystemsIndustry: TransitIndustry: RailType: Electrical Engineering+18 more

Apex Engineering Group

Fargo, ND

Apex Engineering Group brings clarity and confidence to complex engineering projects.

WebsitePhone7 offices11 projects5 leaders18 credentialsFounded 2010

Project: City of Detroit Lakes, MN Municipal Engineering Services

Service: Water EngineeringService: Water wells and intake structuresService: On-site pilot plantsIndustry: GovernmentIndustry: Water ResourcesType: Civil Engineering+83 more

Applied Automation and Controls, Inc.

Expert Automation & Control Solutions for Oil & Gas

Website5 credentialsUpdated Jun 2026

Service detail: Automation & Control Systems Engineering

Service: Automation & Control Systems EngineeringService: Data Acquisition SystemsService: SCADA and HMI DevelopmentIndustry: Oil & GasIndustry: IndustrialType: Automation & Controls+27 more

Astra Engineering LLC

Twin Falls, ID

Industrial Design, Automation, and Engineering Solutions

WebsitePhone1 office2 projects4 credentialsSize Estimate: 10-50 employeesUpdated Jun 2026

Project: Heritage Academy Campus Expansion

Service: Construction EngineeringService: Civil EngineeringService: Structural EngineeringIndustry: ManufacturingIndustry: MiningType: Civil Engineering+32 more

Automation Control Service LLC

Pensacola, FL

Control System Integrator specializing in Automation & Information Systems

WebsitePhone1 office8 credentialsFounded 2003Updated Jun 2026

Service detail: Municipal & Industrial Automation

Service: Municipal & Industrial AutomationService: PLC & HMI ProgrammingService: SCADA & DCS IntegrationIndustry: GovernmentIndustry: IndustrialType: Automation & Controls+23 more

Avista Realtime Systems LLC

Industrial Intelligence Built and Delivered with Pride

Website5 projectsUpdated Jun 2026

Project: Hospital Distributed Generation Transfer Trip

Service: SCADA EngineeringService: SCADA System Design and ImplementationService: SCADA Upgrades and ModernizationIndustry: Electric UtilitiesIndustry: Water SupplyType: Automation & Controls+21 more

CDM Smith

Boston, MA

CDM Smith is an engineering, construction, and environmental consulting firm headquartered in Boston, Massachusetts, with over 7,000 colleagues and 120+ offices worldwide. With 79 years of impact (founded circa 1947 as Camp, Dresser & McKee), it delivers engineering, construction, and environmental services spanning water and wastewater infrastructure, environmental remediation, transportation, energy, and federal and commercial facilities. CDM Smith's practices include drinking water, conveyance, wastewater, stormwater, environmental emerging contaminants, geotechnical and tunnels, MEP and fire protection, architecture, automation, transportation, energy, and climate resilience. It operates Trinnex, a wholly-owned software subsidiary offering the dataCAST SaaS platform and advanced analytics for environmental and infrastructure data management.

Website1 office6 projectsFounded 1947Size Estimate: 7,000 employeesUpdated Jun 2026

Project: PFAS Data to Decisions - U.S. Air Force (Dover AFB)

Service: Water and Wastewater EngineeringService: Drinking WaterService: ConveyanceIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+30 more

Casne Engineering, Inc.

Bellevue, WA

Supporting America's Infrastructure

Website1 office3 projects1 publicationsFounded 1981Size Estimate: 100-200 employeesUpdated Jun 2026

Project: Natural Gas Turbine Fleet Monitoring

Service: Electrical EngineeringService: Medium and low voltage equipment and distribution systemsService: Primary and secondary unit substationsIndustry: AerospaceIndustry: Data CentersType: Automation & Controls+50 more

Cyient

Delivering Intelligent Engineering

Website4 projects3 leaders4 credentialsFounded 1991Size Estimate: 1,000+ employeesUpdated Jun 2026

Project: World's Most Fuel-Efficient Aircraft Engine

Service: Product EngineeringService: Digital Twin & Digital ThreadService: Autonomous SystemsIndustry: AerospaceIndustry: DefenseType: Electrical Engineering+31 more

DARcor & Associates, Inc.

Phoenix, AZ

Innovation and technical precision are our core values.

Website1 office12 projects5 leaders2 credentialsFounded 1997Size Estimate: 11 employees

Project: ADOT Rest Area Rehabilitation

Service: Control Panel & IntegrationService: PLC & HMI/OIT ProgrammingService: Process & Instrumentation DiagramsIndustry: Water SupplyIndustry: WastewaterType: Electrical Engineering+21 more

DPMK Group LLC

Raleigh, NC

Boutique Product Development Firm

WebsitePhone2 offices1 leadersUpdated Jun 2026

Service detail: Technical Discovery & Feasibility

Service: Technical Discovery & FeasibilityService: Use-Case ExplorationService: Technical Feasibility StudiesIndustry: ManufacturingIndustry: RoboticsType: Automation & Controls+28 more

Davis Martin Powell Associates

Let our experience make yours better.

Website6 projectsFounded 1965Size Estimate: 50-199 employeesUpdated Jun 2026

Project: Butner Street & Sidewalk Improvements

Service: Civil EngineeringService: Land & Site DevelopmentService: Municipal InfrastructureIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+30 more

DePauli Engineering & Surveying, LLC

Gallup, NM

Civil Engineering and Land Surveying in New Mexico and Arizona

WebsitePhone1 office4 leaders3 credentialsFounded 2000Size Estimate: 10-20 employees

Service detail: Civil Engineering

Service: Civil EngineeringService: Water ResourcesService: Roadway and Street DesignIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+17 more

Design Systems, Inc.

Farmington Hills, MI

Manufacturing Engineering & Consulting Services

WebsitePhone4 officesFounded 1983Size Estimate: 300+ employeesUpdated Jun 2026

Service detail: Manufacturing Execution Systems (MITS)

Service: Manufacturing Execution Systems (MITS)Service: Traceability & GenealogyService: BatchIndustry: AerospaceIndustry: DefenseType: Industrial Engineering+35 more

Element 29 LLC

Tampa, FL

Multidisciplinary engineering for industrial, energy, and mission-critical systems.

WebsitePhone1 office19 projects1 leaders2 credentialsUpdated Jun 2026

Project: 20.5 MGD Reverse Osmosis System

Service: Process and Chemical EngineeringService: Process flow diagrams and P&IDsService: Mass and energy balancesIndustry: IndustrialIndustry: ManufacturingType: Process Engineering+108 more

Four Pillars Global Management, Inc.

Partnership you can count on.

Website5 leaders2 credentialsUpdated Jun 2026

Service detail: Technical and Support Services

Service: Technical and Support ServicesService: CybersecurityService: Cloud ComputingIndustry: DefenseIndustry: FederalType: Defense Engineering+15 more

Ingenix Technologies LLC

Engineering Systems That Move From Concept to Deployment

Website2 projects2 leadersSize Estimate: Up to 25 employeesUpdated Jun 2026

Project: TIMELOCK

Service: CybersecurityService: Hardware Security AnalysisService: Software Vulnerability AssessmentIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+21 more

Innovative Werks Inc

Naperville, IL

Unlock Real-Time Insight. SCADA & Pi Integration You Can Trust

WebsitePhone2 offices1 leaders2 credentialsFounded 2001Updated Jun 2026

Service detail: Industrial Automation & Control Systems

Service: Industrial Automation & Control SystemsService: New Control SystemsService: Existing Control System ModificationIndustry: Electric UtilitiesIndustry: ManufacturingType: Automation & Controls+30 more

Numeric Engineering Inc.

Cypress, TX

Intelligent Designs for Demanding Operations

WebsitePhone2 offices4 projects1 credentialsUpdated Jun 2026

Project: Deep Edge Platform Deployment

Service: Instrumentation & Measurement SystemsService: Environmental & Metocean SensingService: Motion & Position SensingIndustry: Oil & GasIndustry: MarineType: Automation & Controls+27 more

Patti Engineering

Auburn Hills, MI

Modern Solutions for Today's Automation Challenges

WebsitePhone1 office4 projects2 leaders5 credentials5 publications

Project: Siemens S7-1500 and WinCC OA Solution Mitigates Risk in the Textile Industry

Service: Control Systems IntegrationService: PLC and HMI ProgrammingService: Legacy Control System UpgradesIndustry: AutomotiveIndustry: PharmaceuticalType: Automation & Controls+41 more

Planet Defense LLC

Fairfax, VA

Digital transformation, cybersecurity, and smart city solutions for government and commercial clients worldwide.

WebsitePhone1 office4 projects1 leadersUpdated Jun 2026

Project: Virginia Smart Community Testbed

Service: CybersecurityService: Risk and Vulnerability AssessmentsService: Industrial Control Systems SecurityIndustry: FederalIndustry: GovernmentType: Software Engineering+67 more

Power Resources International, Inc.

West Babylon, NY

The New York metro's leader in automation solutions.

WebsitePhone1 office9 projects4 credentialsFounded 1992Size Estimate: 25-50 employees

Project: Canarsie Line (L Train) PA/CIS Upgrades

Service: Project ManagementService: Infrastructure Project Lifecycle ManagementService: Contract and Closeout DocumentationIndustry: RailIndustry: TransitType: Automation & Controls+55 more

Prism Systems, Inc.

Mobile, AL

Total Solution Provider

WebsitePhone1 office2 projects1 leadersUpdated Jun 2026

Project: Indy Autonomous Challenge Wireless Network

Service: Automation and ControlService: PLC, DCS, and Hybrid Control SolutionsService: HMI and SCADA DevelopmentIndustry: PetrochemicalIndustry: Food & BeverageType: Automation & Controls+28 more

SCS Engineers

Long Beach, CA

At the forefront of sustainable environmental solutions for over 56 years.

WebsitePhone2 offices9 projects3 leaders16 credentials6 publications

Project: Casa Ramona Remediation

Service: Solid Waste ManagementService: Landfill Permitting and EngineeringService: Materials Recovery Facility OptimizationIndustry: Waste ManagementIndustry: GovernmentType: Environmental Engineering+44 more