Public engineering firm directory

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Horner & Shifrin, Inc.

St. Louis, MO

Horner & Shifrin is a multidisciplinary professional services engineering firm founded in St. Louis in 1933, offering building systems MEP/FP engineering, water and wastewater, transportation, structural, environmental, geospatial, surveying, and construction services. With nine offices across Missouri, Illinois, and Arkansas and repeat client assignments from 80% of its client base, H&S serves education, government, healthcare, emergency services, utilities, and private markets throughout the Midwest.

WebsitePhone9 offices8 leaders
Service: Building ServicesService: Drinking WaterIndustry: EducationType: MEP+34 more

QK

Bakersfield, CA

Engineering, Smarter, Stronger Communities

Website8 officesFounded 1972Updated Jun 2026
Service: Civil EngineeringService: Civil Engineering DesignIndustry: AgricultureType: Civil Engineering+49 more

SAM, LLC

Chesterfield, MO

Professional Services that Power Decisions

Website4 offices8 projects1 leaders
Service: Land SurveyingService: ALTA and Boundary SurveysIndustry: Electric UtilitiesType: Land Surveying+47 more

Thompson Civil, LLC

St. Louis, MO

Quality, Safety, and Experience

WebsitePhone2 offices6 projects
Service: TransportationService: Roadway DesignIndustry: Highways & RoadsType: Civil Engineering+19 more