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.

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Campos EPC, LLC

Denver, CO

The Leader In Energy Infrastructure

WebsitePhone20 offices1 projects11 leaders3 publicationsFounded 2005

Project: 350MW Data Center Power Generation & Substation Facility

Service: EngineeringService: Pipeline EngineeringService: Transmission And Midstream Pipeline DesignIndustry: Oil & GasIndustry: UtilitiesType: EPC+51 more

Century 3 Inc.

Greer, SC

Century 3 Inc. (C3) is an industrial engineering and construction company founded in 1977 in Greer, SC. C3 delivers engineering design, procurement, self-perform industrial construction, construction management, facility relocation, and maintenance services to clients in the food and beverage, pharmaceutical and life science, advanced manufacturing, automotive, chemical, high-tech, mission-critical, and general industrial markets. With 1,500 or more engineering and construction professionals, C3 holds professional engineering licenses and unlimited general contractor licenses throughout the United States, as well as trade-specific electrical, mechanical, plumbing, and piping contractor licenses. US offices are in Greer SC, Augusta GA, Pittsburgh PA, and Phoenix AZ, with additional international entities in China and Europe.

Website4 offices6 leadersFounded 1977Size Estimate: 1,500+ employeesUpdated Jun 2026

Service detail: Engineering Design

Service: Engineering DesignService: Self-Perform Industrial ConstructionService: ProcurementIndustry: Food & BeverageIndustry: PharmaceuticalType: Industrial Engineering+12 more

ENGlobal Corporation

Houston, TX

Delivering Innovation

WebsitePhone3 officesUpdated Jun 2026

Service detail: Project Management

Service: Project ManagementService: Program ManagementService: Front-End Engineering and Design (FEED)Industry: Oil & GasIndustry: PetrochemicalType: EPC+26 more

Effective Project Corporation

Overland Park, KS

Innovation in Design + Design/Build

WebsitePhone1 officeFounded 2000Updated Jun 2026

Service detail: Conceptualization

Service: ConceptualizationService: Preliminary Project ReportsService: Feasibility StudiesIndustry: Power GenerationIndustry: IndustrialType: Process Engineering+44 more

Jedson Engineering

Your Capital Project Delivery Partner

Website17 leadersUpdated Jun 2026

Service detail: Engineering

Service: EngineeringService: Feasibility (FEL-1)Service: Conceptual Design (FEL-2)Industry: Consumer ProductsIndustry: Life SciencesType: EPC+44 more

Keystone Engineering Inc.

Mandeville, LA

Engineering Excellence & Innovation in Every Design

WebsitePhone9 offices5 projects8 leaders3 credentialsFounded 1988

Project: Geothermal Water System

Service: Multi-Discipline EngineeringService: Process EngineeringService: Mechanical EngineeringIndustry: Oil & GasIndustry: PetrochemicalType: EPC+26 more

Lauren Engineers & Constructors

Designing and Building Success

WebsiteUpdated Jun 2026

Service detail: EPC / EPCM

Service: EPC / EPCMService: EPC Project ManagementService: Front End Engineering Design (FEED)Industry: Oil & GasIndustry: PetrochemicalType: EPC+30 more

Millcreek Engineering Co.

Salt Lake City, UT

Rendering to Reality

WebsitePhone2 officesSize Estimate: 20-100 employeesUpdated Jun 2026

Service detail: Full-Service EPC

Service: Full-Service EPCService: EngineeringService: ProcurementIndustry: MiningIndustry: Aggregates & QuarryingType: Process Engineering+27 more

Penta Engineering Corp

St. Louis, MO

Committed to Excellence From Concept to Completion

Website4 offices3 projects4 leadersFounded 1986Updated Jun 2026

Project: Ash Classification System EPCM

Service: EngineeringService: Mechanical EngineeringService: Structural & Civil EngineeringIndustry: Aggregates & QuarryingIndustry: AgricultureType: Civil Engineering+29 more

Upstream Engineering

Houston, TX

Providing value-added engineering and EPC delivery throughout the project cycle

WebsitePhone1 office3 projects2 leadersFounded 2002Size Estimate: 10-50 employees

Project: Mizton Wellhead Platform

Service: Front End EngineeringService: Concept Select StudiesService: Pre-FEED & FEED EngineeringIndustry: Oil & GasIndustry: MarineType: Process Engineering+25 more