Public engineering firm directory

Find engineering consulting firms by capability and location.

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Amped I LLC

Chicago, IL

We engineer & design systems for the reliability of the power grid.

Website1 office4 projects2 leadersFounded 2010Updated Jun 2026

Project: Solar & Wind Interconnects

Service: Protection & ControlService: Relay ProtectionService: Relay CommunicationsIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Power & Utility Engineering+34 more

C.C. Johnson & Malhotra, P.C.

Baltimore, MD

Provide the Highest Level of Service to Our Clients While Delivering Value

WebsitePhone6 offices16 projects8 leadersFounded 1979Size Estimate: 50-100 employees

Project: 540 West Madison

Service: Buildings and FacilitiesService: HVAC Systems DesignService: Electrical Power and LightingIndustry: CommercialIndustry: RetailType: Civil Engineering+58 more

Callan Consulting Engineers, Inc.

Chicago, IL

Your Strategic Engineering Partners

WebsitePhone2 offices5 projects2 leadersFounded 2021Size Estimate: 5-25 employees

Project: Humboldt Park Health Wellness Center

Service: Engineering ConsultingService: Virtual Reality WalkthroughsService: Educational WorkshopsIndustry: CommercialIndustry: ResidentialType: MEP+14 more

Corrosion Probe, Inc.

Centerbrook, CT

Preserving Infrastructure, One Solution at a Time.

WebsitePhone13 offices6 credentialsUpdated Jun 2026

Service detail: Materials & Corrosion

Service: Materials & CorrosionService: Material SelectionService: Damage Mechanism IdentificationIndustry: Pulp & PaperIndustry: Water SupplyType: Materials Engineering+30 more

David Mason + Associates

St. Louis, MO

Exceptional Engineering. Innovative Construction Services. Dedicated to Our People.

WebsitePhone7 offices7 projectsFounded 1989Size Estimate: 100-250 employeesUpdated Jun 2026

Project: Jefferson National Expansion Memorial - Gateway Arch Grounds Renovations

Service: Civil EngineeringService: Structural EngineeringService: Survey and 3D ScanningIndustry: HealthcareIndustry: EducationType: Civil Engineering+20 more

Globetrotters Engineering Corporation

Chicago, IL

Architecture, Engineering, Technology

WebsitePhone3 offices9 projects6 leaders10 credentialsFounded 1974

Project: O'Hare International Airport Terminal 5

Service: ArchitectureService: Condition AssessmentService: Spatial and Building DesignIndustry: TransitIndustry: TransportationType: Architecture & Engineering+48 more

LUZCO Technologies, LLC

St. Louis, MO

Power Delivery, Construction Management, and Industrial & Corporate Consulting Solutions

WebsitePhone5 offices5 projects8 leaders13 credentialsSize Estimate: 10-100 employees

Project: 34kV Distribution Line Project - Arnold, MO

Service: Power DeliveryService: Transmission & Distribution Line DesignService: Transmission & Distribution Substation DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+18 more

Magnusson Klemencic Associates Inc

Seattle, WA

Not just different, different better.

WebsitePhone2 offices6 projects160 leaders9 credentialsFounded 1920

Project: Rainier Square Redevelopment

Service: Structural EngineeringService: Seismic, Wind, and Vibration DesignService: Adaptive Reuse, Existing Building Renovation, and RetrofitsIndustry: HealthcareIndustry: AviationType: Civil Engineering+17 more

SPAAN Tech, Inc.

Chicago, IL

We Build Stronger Communities

WebsitePhone1 office6 projects7 leaders2 credentialsFounded 1998

Project: CTA Blue Line Rapid Transit Construction

Service: EngineeringService: Infrastructure PlanningService: Infrastructure DesignIndustry: TransportationIndustry: AirportsType: Civil Engineering+40 more

Toltz, King, Duvall, Anderson and Associates, Incorporated

Minneapolis, MN

Engineering | Architecture | Planning

Website6 offices12 projects1 leadersFounded 1910Updated Jun 2026

Project: Runway 14-32 Extension - Morris Municipal Airport

Service: Transportation EngineeringService: Aviation EngineeringService: Rail EngineeringIndustry: TransportationIndustry: AviationType: Civil Engineering+42 more

Walker Consultants

Chicago, IL

Bringing Life to the Built Environment

Website26 offices4 publicationsFounded 1965Size Estimate: 500+ employeesUpdated Jun 2026

Service detail: Parking Design

Service: Parking DesignService: Functional DesignService: Architecture DesignIndustry: AviationIndustry: ResidentialType: Forensic Engineering+44 more

exp Federal Inc.

Chicago, IL

Architecture + Engineering | Construction | Mission Support

Website5 offices9 projects1 credentialsFounded 2012Size Estimate: 250-500 employeesUpdated Jun 2026

Project: Fish Dispersal Barrier

Service: ArchitectureService: Master PlanningService: Facilities ProgrammingIndustry: DefenseIndustry: FederalType: Architecture & Engineering+45 more