Public engineering firm directory

Find engineering consulting firms by capability and location.

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Steadfast Solutions, LLC

Florence, AL

We provide mechanical, electrical, and plumbing (MEP) engineering services

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Mechanical, Electrical, and Plumbing Engineering

Service: Mechanical, Electrical, and Plumbing EngineeringService: Mechanical DesignService: Electrical DesignIndustry: CommercialIndustry: ResidentialType: MEP+18 more

TIE Consulting, LLC

St. Louis, MO

Get connected. Stay secure. Reduce costs.

WebsitePhone1 office4 projects3 leadersUpdated Jun 2026

Project: Mercy Health Campus-Wide Fire Alarm System

Service: Technology Systems EngineeringService: Technology Systems PlanningService: Electrical DesignIndustry: HealthcareIndustry: EducationType: MEP+8 more

Techwood Engineering

Atlanta, GA

Automation with a Human Touch

Website1 officeFounded 2022Updated Jun 2026

Service detail: Electrical Design

Service: Electrical DesignService: ProgrammingService: Electrical InstallationIndustry: IndustrialIndustry: ManufacturingType: Electrical Engineering+7 more

Three i Design

Evansville, IN

Imagination. Innovation. Integrity.

WebsitePhone1 officeSize Estimate: 50-150 employeesUpdated Jun 2026

Service detail: Architecture

Service: ArchitectureService: PlanningService: Architectural DesignIndustry: HealthcareIndustry: CommercialType: Architecture & Engineering+32 more

Tri-Tech Associates, Inc.

Centerville, OH

Tri-Tech Associates, Inc., operating as Tri-Tech Engineering, is a multidiscipline engineering firm founded in 1977 and based in Centerville, Ohio. Originally rooted in the Dayton area's automotive and heavy industrial markets, its practice now extends to commercial, healthcare, retail, and structural projects. Its staff delivers plumbing, mechanical, electrical, and structural design together with LEED program management, energy studies, commissioning, and investigative and forensic engineering services.

WebsitePhone1 officeFounded 1977Updated Jun 2026

Service detail: MEP Engineering

Service: MEP EngineeringService: Plumbing DesignService: Mechanical DesignIndustry: IndustrialIndustry: ManufacturingType: MEP+10 more

Trinidad Engineering Inc

Sudbury, MA

When your team can't afford to get it wrong.

WebsitePhone1 office2 projects1 leaders3 credentialsFounded 1996

Project: Nuvera Fuel Cell Retrofit

Service: HVAC Engineering and ConsultingService: HVAC System DesignService: Air Design and RetrofitIndustry: EducationIndustry: HealthcareType: Mechanical Engineering+27 more

Two Oaks Design & Consulting

Madison, WI

Design Solutions Driven by Technology

WebsitePhone1 officeUpdated Jun 2026

Service detail: Electrical Design

Service: Electrical DesignService: Mission-Critical Systems AnalysisService: Power Distribution AnalysisIndustry: Mission Critical FacilitiesIndustry: Data CentersType: Electrical Engineering+13 more

Vortex Systems

Enfield, CT

Integrating & Manufacturing World-Class Test Systems for Aircraft Repair Stations on a Global Scale

WebsitePhone1 office4 projects2 credentialsFounded 1996Size Estimate: 5-50 employees

Project: 787 Test Stands

Service: Test Stand Design & BuildService: Hydraulic test standsService: Pneumatic and electro-pneumatic test standsIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+35 more

WMD Squared Engineering, LLC

Lafayette, LA

Engineering and Drafting Services Designed to Compete on a Global Scale

WebsitePhone2 offices7 projects2 credentialsFounded 2006Updated Jun 2026

Project: Equipment Laydown Unit

Service: Engineering DesignService: Mechanical DesignService: Structural DesignIndustry: Oil & GasIndustry: DefenseType: Mechanical Engineering+23 more

Wolf Engineering

Collaborative MEP design built on expertise, partnership, and performance.

Website15 projects19 leaders5 credentialsFounded 2021Size Estimate: 20+ employeesUpdated Jun 2026

Project: Mission Critical Power Systems

Service: Mechanical DesignService: HVAC DesignService: Specialized Piping SystemsIndustry: IndustrialIndustry: ManufacturingType: MEP+27 more

Yeadon Energy Systems, Inc.

Leaders in Electric Motors Design Development, Prototype Fabrication, and Testing

Website2 leaders5 credentialsFounded 1996Size Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Motor Design

Service: Motor DesignService: Electrical DesignService: Mechanical DesignIndustry: ManufacturingIndustry: AutomotiveType: Electrical Engineering+28 more

Zona Technical Engineering, PLLC

Tucson, AZ

Zona Technical Engineering, PLLC is a full-service MEP consulting engineering firm headquartered in Tucson, Arizona. Founded in 2022 by Principal Mechanical Engineer Dave Tyrrell and Principal Electrical Engineer Alec Zimmermann, it provides in-depth Mechanical, Electrical, and Plumbing design services for commercial new construction and renovation projects across Arizona and the Southwest. Services include HVAC and plumbing systems design, electrical design, arc flash studies, fire protection system design criteria, and construction administration, all produced in-house using Revit and BIM. It has served healthcare facilities, university campus buildings, government courthouses, research laboratories, manufacturing facilities, hospitality venues, and mixed-use residential projects throughout the Tucson metropolitan area.

WebsitePhone1 office5 projects2 leaders2 credentialsFounded 2022

Project: UA Global Center, Phase 2

Service: MEP Engineering DesignService: HVAC and Plumbing Systems DesignService: Electrical DesignIndustry: HealthcareIndustry: EducationType: MEP+11 more