Public engineering firm directory

Find engineering consulting firms by capability and location.

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Acoustical Engineering Consultants

Elk Grove, CA

Engineering a quieter world and optimizing aural environments, one project at a time.

WebsitePhone2 offices8 projects2 leaders4 credentialsFounded 2008

Project: CalSTRS Headquarters 2.0

Service: Architectural AcousticsService: Room Acoustics Measurement and AnalysisService: Reverberation and Diffusion EngineeringIndustry: EducationIndustry: HealthcareType: Acoustic Consulting+36 more

ArcSine Engineering

Redding, CA

The Expert's Expert.

WebsitePhone2 offices4 projects3 credentialsFounded 1978Size Estimate: 25-50 employees

Project: Town of Windsor SCADA System

Service: Electrical EngineeringService: Lighting Design and ModelingService: Power System StudiesIndustry: WastewaterIndustry: Water SupplyType: Automation & Controls+33 more

Blue Sky Scientific LLC

San Diego, CA

Delivering creative solutions to your hardest problems

Website1 office6 projectsFounded 2006Updated Jun 2026

Project: Boxing Tracking Broadcast Technology

Service: Embedded Systems EngineeringService: Firmware and Operating System DevelopmentService: Custom PCB and Hardware DesignIndustry: CommercialIndustry: Consumer ProductsType: Automation & Controls+16 more

CJSeto Support Services, LLC

Ventura, CA

CJSeto Support Services, LLC is an environmental compliance, safety, information technology, logistics, and workforce training firm headquartered in Ventura, California. Founded in 1999, CJSeto holds ISO 9001:2015 certification and serves federal agencies, educational institutions, healthcare providers, and commercial clients. Its environmental practice covers hazardous waste management, EPA and RCRA compliance, NEPA documentation, spill prevention planning, environmental monitoring and remediation, and asbestos and lead monitoring. Its safety and industrial hygiene practice encompasses OSHA compliance audits, indoor air quality testing, chemical inventory management, respiratory protection, and hazard assessments. Additional service areas include IT infrastructure, cybersecurity and information assurance, logistics and inventory management, and professional training including HAZWOPER, OSHA, and EPA compliance courses. Federal clients include the U.S. Navy, Department of Homeland Security, NASA, and the Veterans Administration.

WebsitePhone1 office1 credentialsFounded 1999Updated Jun 2026

Service detail: Environmental Compliance

Service: Environmental ComplianceService: Hazardous Waste ManagementService: Environmental Monitoring and SamplingIndustry: FederalIndustry: DefenseType: Environmental Engineering+22 more

Edifica USA

Lake Forest, CA

Multi-discipline geotechnical, structural, and environmental engineering services

WebsitePhone2 offices1 projectsUpdated Jun 2026

Project: SPLA Port

Service: Geotechnical EngineeringService: Geotechnical Design and AnalysisService: Subsurface Exploration for InfrastructureIndustry: Ports & HarborsIndustry: Highways & RoadsType: Geotechnical Engineering+40 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

SHN Engineers & Geologists

Eureka, CA

SHN Engineers & Geologists is a Northern California and Southern Oregon engineering firm providing civil, environmental, and geotechnical engineering, planning and permitting, surveying and drone services, biological sciences, and materials testing / special inspections for public- and private-sector projects.

WebsitePhone7 offices1 credentialsUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Water / WastewaterService: Site CivilIndustry: GovernmentIndustry: TransportationType: Civil Engineering+37 more

Shannon & Wilson, Inc.

Seattle, WA

Geotechnical & Environmental Consultants

WebsitePhone15 offices11 projects2 leaders2 credentials2 publications

Project: Lower Dungeness River Floodplain Restoration and Levee Realignment

Service: Geotechnical EngineeringService: Geotechnical StudiesService: ExplorationsIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+37 more

Thermo Systems LLC

East Windsor, NJ

A Premier Systems Integration Partner

WebsitePhone31 offices8 projects2 credentialsFounded 1998Updated Jun 2026

Project: Catalent Steam Humidifier Addition

Service: Automation and Control SystemsService: Controls for Energy and Industrial UtilitiesService: Building Automation Systems (BAS)Industry: Data CentersIndustry: Mission Critical FacilitiesType: Automation & Controls+31 more

Vibrasure

San Francisco, CA

Environmental Solutions for Industries and Institutions Worldwide

WebsitePhone1 office3 projects2 leaders4 credentials1 publications

Project: High-End Imaging Facility Development

Service: Micro-Vibration and Acoustical Design ServicesService: Criterion DevelopmentService: Programming Support and Functional LayoutIndustry: CommercialIndustry: Multifamily ResidentialType: Acoustic Consulting+28 more