Public engineering firm directory

Find engineering consulting firms by capability and location.

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Allen Consulting Inc.

Norman, OK

Partner with Leaders in MEP Engineering

WebsitePhone1 office6 projects3 leaders1 credentialsFounded 1979

Project: Francis Tuttle - New Danforth Campus

Service: Mechanical EngineeringService: HVAC DesignService: Central Plant DesignIndustry: EducationIndustry: HealthcareType: MEP+19 more

Altieri Sebor Wieber, LLC

Wilton, CT

Making Bold Visions Work

WebsitePhone2 offices5 projects1 leaders2 credentialsUpdated Jun 2026

Project: David Rockefeller Creative Arts Center

Service: MEPF EngineeringService: Mechanical EngineeringService: Building Automation and Energy ManagementIndustry: Arts & CultureIndustry: EducationType: MEP+56 more

Astral Engineers P.C.

Rancho Cucamonga, CA

Professional Engineering Services - Mechanical, Electrical, Plumbing, Technology, Fire Protection

WebsitePhone2 offices11 projects3 leaders1 credentials1 publications

Project: Mohs & GI Procedure Room Renovation

Service: Mechanical EngineeringService: Air Handling Unit DesignService: Central Utility PlantsIndustry: HealthcareIndustry: FederalType: MEP+51 more

Bandwidth Solutions Inc

McLean, VA

Engineering & Management

WebsitePhone1 officeUpdated Jun 2026

Service detail: Program and Project Management

Service: Program and Project ManagementService: Project ManagementService: Budgeting and Cost AnalysisIndustry: AerospaceIndustry: SpaceType: Telecom / RF Engineering+38 more

Cottrell & Cottrell, LLC

Fully integrated engineering and business services for the offshore, inland, and marine industries.

Website8 projects1 leaders1 credentialsUpdated Jun 2026

Project: TLP Life Extension Cost Projection Study

Service: Naval Architecture & Marine EngineeringService: Naval ArchitectureService: Marine EngineeringIndustry: Oil & GasIndustry: MarineType: Naval Architecture+33 more

D4C Product Development Inc.

San Diego, CA

D4C Product Development is a San Diego-based engineering and product development practice that guides hardware products from concept to market. It integrates mechanical, electrical, and software engineering with industrial design, prototyping, and manufacturing support, serving consumer electronics, IoT devices, environmental technology, and public safety markets.

WebsitePhone1 office13 projectsUpdated Jun 2026

Project: Big Dipper Point of Sale

Service: Design & Research StrategyService: Product Requirements DefinitionService: Concept Development & Product ArchitectureIndustry: ElectronicsIndustry: Consumer ProductsType: Mechanical Engineering+36 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

Goswami Engineering LLC

Jacksonville, FL

Your Engineer

WebsitePhone1 office1 projects1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: Flagship Property HVAC Remediation

Service: Mechanical EngineeringService: HVAC Systems DesignService: Air Distribution SystemsIndustry: HealthcareIndustry: CommercialType: MEP+40 more

Johnson & Urban, LLC

Founded by partners Doug Johnson and John Urban, Johnson & Urban, LLC offers mechanical and electrical engineering consulting services to architects, owners, developers, design-build contractors, educational boards, and governmental agencies throughout the United States. The practice maintains a strong record of success in designing mechanical, electrical, plumbing, and fire protection systems for complex and high-tech environments. Its portfolio includes new construction, expansions, and renovations for hospitals, laboratories, data centers, universities, museums, multi-family residential projects, and historic landmark buildings.

Website1 leaders8 credentialsUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC DesignService: Building Energy ModelingIndustry: EducationIndustry: PharmaceuticalType: MEP+34 more

McGuire Engineers, Inc.

Chicago, IL

Excellence by Design, Sustainability by Commitment

WebsitePhone1 office15 projects3 leaders17 credentialsFounded 1986

Project: The Momentary

Service: MEP Engineering DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: CommercialIndustry: Arts & CultureType: MEP+45 more

Neu Company, LLC

Lafayette, LA

Engineering With Confidence & Integrity

Website1 office5 leaders1 credentialsFounded 2021Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Overhead CranesService: Below the Hook AttachmentsIndustry: IndustrialIndustry: CommercialType: Civil Engineering+28 more

Pennoni

Philadelphia, PA

Partners for What's Possible

Website1 office5 projects6 leaders6 credentials2 publicationsFounded 1966

Project: I-95 Central Access Philadelphia (CAP)

Service: Civil/SiteService: Site Planning & Land DevelopmentService: Permitting & EntitlementIndustry: CommercialIndustry: RetailType: Civil Engineering+136 more

STS International, Inc.

Mission-Driven Innovation for Defense and National Security

Website3 credentialsFounded 1992Updated Jun 2026

Service detail: Engineering and Integration Services

Service: Engineering and Integration ServicesService: Systems Engineering ServicesService: Software Engineering and Application DevelopmentIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+23 more

Spotts, Stevens and McCoy

Spotts, Stevens and McCoy (SSM) is a family-owned regional engineering, environmental, and surveying firm with more than 90 years of experience, serving local and global clients from offices in Pennsylvania. SSM's multidisciplinary practice covers building engineering, civil and site engineering, land surveying, water and wastewater services, municipal engineering, environmental services, and energy services, supporting community development, infrastructure planning, and facility lifecycle management throughout the Mid-Atlantic region.

WebsiteUpdated Jun 2026

Service detail: Building Engineering

Service: Building EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: GovernmentIndustry: EducationType: Civil Engineering+24 more

United Engineering Service Group LLC

New York, NY

Where Innovation Takes Flight

WebsitePhone1 office2 projectsUpdated Jun 2026

Project: NASA Technical CAD 3D Modeling Project

Service: Mechanical EngineeringService: Mechanical Systems DesignService: Thermal and Solar Energy ComponentsIndustry: AerospaceIndustry: SpaceType: Aerospace Engineering+30 more