Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

Filters2

C&I Engineering, LLC

Goodyear, AZ

Solutions That Fit

WebsitePhone1 office4 projectsFounded 1999Updated Jun 2026

Project: Engineering Services at Energy Northwest

Service: Engineering ServicesService: Electrical EngineeringService: Mechanical EngineeringIndustry: NuclearIndustry: Power GenerationType: Automation & Controls+22 more

Core One Consulting

Surrey, BC

In a Time of Evolving Technologies, Core One Keeps Telecom Companies Moving Forward

WebsitePhone4 offices2 projects2 leadersFounded 2012Size Estimate: 10-49 employees

Project: Rogers Place Stadium DAS Design

Service: Engineering ServicesService: Architectural and Engineering DesignService: Structural Engineering ServicesIndustry: TelecommunicationsType: Telecom / RF Engineering+12 more

Hooghan LLC

Prescott, AZ

Hooghan LLC is a Prescott, Arizona-based firm with more than 25 years of experience delivering engineering, drone and unmanned aerial systems services, and construction project management. Hooghan honors tribal culture and tradition, focusing on projects that serve tribal and government clients through meaningful community engagement and deep knowledge of tribal regulations, processes, and cultures.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Engineering Services

Service: Engineering ServicesService: Drone and Unmanned Aerial SystemsService: Construction Project ManagementIndustry: GovernmentIndustry: FederalType: Civil Engineering

Interlock Energy

Goodyear, AZ

Engineered Solutions for Critical Infrastructure

WebsitePhone2 officesUpdated Jun 2026

Service detail: Custom Fabrication and Reverse Engineering

Service: Custom Fabrication and Reverse EngineeringService: 3D Scanning and ModelingService: Legacy Part Re-engineeringIndustry: Power GenerationIndustry: Electric UtilitiesType: Mechanical Engineering+10 more

Merjent, Inc.

Minneapolis, MN

Engineering, environmental, field, and restoration services.

WebsitePhone3 offices4 leadersFounded 2004Size Estimate: 300+ employeesUpdated Jun 2026

Service detail: Environmental Permitting and Compliance

Service: Environmental Permitting and ComplianceService: Regulatory Permitting and ApprovalsService: Ongoing Compliance MonitoringIndustry: Oil & GasIndustry: Power GenerationType: Environmental Engineering+26 more

Stone Solutions + Research Collective (S2RC)

Phoenix, AZ

Linking tactics, techniques, and procedures with technology for the end user.

Website1 office3 projects2 leadersUpdated Jun 2026

Project: MATRIX

Service: Human Systems EngineeringService: User Experience and Interface DesignService: Cognitive and Ecological Systems EngineeringIndustry: DefenseIndustry: Intelligence & National SecurityType: Defense Engineering+33 more

True Environmental

Phoenix, AZ

Environmental Engineering Excellence

Website2 offices6 projects2 credentialsSize Estimate: 700 employeesUpdated Jun 2026

Project: Atlantic Shores Offshore Wind

Service: Engineering ServicesService: Environmental ServicesService: Federal Program ServicesIndustry: Environmental & RemediationIndustry: MiningType: Environmental Engineering+16 more