Public engineering firm directory

Find engineering consulting firms by capability and location.

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3 Rocks Engineering & Surveying

CaƱon City, CO

Colorado Civil, Structural, & Land Surveying Experts

WebsitePhone3 offices9 projects2 leadersSize Estimate: 11-50 employeesUpdated Jun 2026

Project: Love's Travel Stop & RV Park Designs

Service: Civil EngineeringService: Residential and Commercial Site DevelopmentService: Oil and Gas Civil SupportIndustry: CommercialIndustry: ResidentialType: Civil Engineering+28 more

3D Innovations, LLC

Honolulu, HI

Developing Ideas From Concept To Product

WebsitePhone1 office5 projectsFounded 2007Updated Jun 2026

Project: The BabyToon Silicone Baby Spoon

Service: Product Design & EngineeringService: 3D CAD Design & VisualizationService: 3D EngineeringIndustry: AerospaceIndustry: DefenseType: Mechanical Engineering+14 more

ADCOMM Engineering LLC

Woodinville, WA

We Bridge The Gap Between Operations and Technology.

WebsitePhone2 offices1 credentialsUpdated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Public Safety Systems EngineeringService: Communications Network DesignIndustry: Public SafetyIndustry: GovernmentType: Owner's Engineer+30 more

ADX Research, Inc.

Schaumburg, IL

Innovative Solutions, Exceptional Performance

WebsitePhone1 office6 leaders11 publicationsFounded 2009Size Estimate: 1-10 employees

Service detail: System Design

Service: System DesignService: Power Electronics System DesignService: Communication System DesignIndustry: ElectronicsIndustry: TelecommunicationsType: Electrical Engineering+14 more

Achates Power, Inc.

San Diego, CA

Fundamentally Better Engines

WebsitePhone2 offices4 projects2 credentialsFounded 2004Updated Jun 2026

Project: Ultralow NOx Diesel Heavy-Duty Engine Deployment

Service: Opposed-Piston Engine Technology LicensingService: Engine Design LicensingService: Development and Test ToolsIndustry: AutomotiveIndustry: DefenseType: Mechanical Engineering+14 more

Aerospace Structural Research Corp

Milford, CT

Transforming Ideas into Reality with Engineering Expertise

WebsitePhone1 officeFounded 1995Updated Jun 2026

Service detail: Engineering Design Services

Service: Engineering Design ServicesService: Computer-Aided Design (CAD)Service: Solid ModelingIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+45 more

Apex PetroConsultants LLC

Where Deep Ethylene Expertise Meets Strategic Decision-Making

Website7 projects1 leaders2 publicationsSize Estimate: 1-9 employeesUpdated Jun 2026

Project: 10% CAPEX Reduction for Integrated Mixed-Feed Complexes

Service: Project Development and Execution OversightService: Independent Technology SelectionService: FEED and Detailed Engineering ReviewIndustry: PetrochemicalIndustry: ChemicalsType: Chemical Engineering+20 more

Appendix R Solutions Inc

Hanover, VA

Providing unique multi-disciplinary engineering solutions

WebsitePhone1 office1 projectsFounded 2000Updated Jun 2026

Project: Post-Fukushima Safe Shutdown and Restart Support

Service: Fire Protection EngineeringService: Fire ModelingService: Classical Fire ProtectionIndustry: NuclearIndustry: Power GenerationType: Fire Protection Engineering+25 more

Argis Solutions, Inc.

Aurora, CO

The no-nonsense spatial partner.

Website1 office5 projects1 leaders3 credentialsFounded 2016Updated Jun 2026

Project: City of Laramie, Wyoming ArcGIS Modernization

Service: GIS Assessments & System Health ChecksService: Services for ArcGIS OnlineService: Jumpstart for ArcGIS OnlineIndustry: GovernmentIndustry: FederalType: Software Engineering+13 more

Arnold & Associates, Inc.

Roswell, GA

Arnold & Associates, Inc. (A&A) is an Operations and Maintenance (O&M) engineering consulting practice founded in 1988 and based in Roswell, Georgia. It provides professional engineering, training, technical O&M consulting, and staff support services. Its capabilities serve industrial and utility systems, steam and electric power generation, building HVAC systems, and similar facility operations. The practice specializes in the efficient management and utilization of personnel, energy, rotating equipment, boilers, steam and combustion turbines, and diesel-engine-driven components. It also offers technical recruiting, energy conservation surveys, and professional power engineering licensing preparation seminars.

Website1 office2 credentialsFounded 1988Updated Jun 2026

Service detail: Operations & Maintenance Consulting

Service: Operations & Maintenance ConsultingService: Procedures Review and UpdatingService: O&M Personnel EvaluationsIndustry: Power GenerationIndustry: Oil & GasType: Mechanical Engineering+29 more

Arrow North Surveying, LLC

Greenville, SC

Arrow North Surveying, LLC is a professional land surveying and mapping firm based in Greenville, South Carolina, serving residential and commercial clients across South Carolina, North Carolina, Georgia, Florida, and Alabama. Led by a Registered Professional Land Surveyor, the firm handles every aspect of a project from initial boundary survey through final municipal approval. Arrow North Surveying offers a full suite of surveying services including ALTA/ACSM surveys, topographic surveys, FEMA elevation certificates, utility locating and mapping, construction layout, subdivision recording, and geomatics engineering.

WebsitePhone1 office1 leaders1 credentialsFounded 2012Updated Jun 2026

Service detail: Commercial and Residential Land Surveys

Service: Commercial and Residential Land SurveysService: Lot Design and Master PlanningService: Road and Sidewalk DesignIndustry: ResidentialIndustry: CommercialType: Land Surveying+18 more

Associated Consulting Engineering, Inc.

Sioux Falls, SD

Associated Consulting Engineering, Inc. (ACEI) is a consulting engineering firm based in Sioux Falls, South Dakota, providing mechanical and electrical systems design since 1987. ACEI offers integrated MEP engineering services for the design of plumbing, fire protection, HVAC, building automation, lighting, power, sound, and communication systems for public and private clients across a broad spectrum of residential, commercial, industrial, and institutional project types. The team is professionally registered in South Dakota, North Dakota, Iowa, Wisconsin, Nebraska, and Minnesota, with additional state licensing available upon request.

WebsitePhone1 officeFounded 1987Updated Jun 2026

Service detail: Mechanical Design

Service: Mechanical DesignService: HVACService: PlumbingIndustry: ResidentialIndustry: Multifamily ResidentialType: MEP+33 more

Big Little Sensor Company

Phoenix, AZ

Establishing world-leading expertise in little-radar technology.

Website1 office7 leaders12 publicationsUpdated Jun 2026

Service detail: Radar IP Licensing & Co-Development

Service: Radar IP Licensing & Co-DevelopmentService: IP LicensingService: Co-Development SupportIndustry: HealthcareIndustry: DefenseType: Telecom / RF Engineering+10 more

Birchrun Labs

Birchrunville, PA

Making the Aspirational Real

Website1 office3 projects3 leadersUpdated Jun 2026

Project: High-Temperature Piezoelectric Material Deployment

Service: Piezoelectric Materials and Component EngineeringService: High-Temperature Ceramic MaterialsService: Piezoelectric Stack ActuatorsIndustry: DefenseIndustry: AerospaceType: Mechanical Engineering+17 more

Blair, Church & Flynn Consulting Engineers

Clovis, CA

Service. Quality. Integrity.

WebsitePhone6 offices3 leaders5 credentialsFounded 1958Updated Jun 2026

Service detail: Planning, Permitting & Consulting

Service: Planning, Permitting & ConsultingService: Alternatives AnalysesService: Constructability ReviewsIndustry: Power GenerationIndustry: Electric UtilitiesType: Civil Engineering+72 more

Bluestone Environmental Group, Inc.

Malvern, PA

Environmental Engineering & Consulting Services

WebsitePhone5 offices8 projects1 leaders2 credentialsFounded 2010

Project: Former Nebraska Ordnance Plant - Remedial Optimization and Pilot Study

Service: Remediation SolutionsService: CERCLA and RCRA InvestigationsService: Human Health and Ecological Risk AssessmentsIndustry: Environmental & RemediationIndustry: DefenseType: Environmental Engineering+18 more

CHA Consulting, Inc.

Albany, NY

Finding a better way.

Website1 office10 leaders3 credentialsFounded 1952Size Estimate: 2,100 employeesUpdated Jun 2026

Service detail: Transportation Solutions

Service: Transportation SolutionsService: Accelerated Bridge Construction (ABC) Design & ConsultingService: Bridge Design & AnalysisIndustry: TransportationIndustry: Highways & RoadsType: Architecture & Engineering+182 more

CJL Engineering, Inc.

Shelton, CT

Results you can count on

WebsitePhone1 office1 leaders2 credentialsFounded 1987Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Design Of HeatingService: VentilationIndustry: CommercialIndustry: RetailType: MEP+44 more

CMT Services Group

West Conshohocken, PA

CMT Services Group is a geotechnical engineering, materials testing, and construction special inspection firm based in West Conshohocken, Pennsylvania, serving clients throughout the Tri-State region (Pennsylvania, New Jersey, and Delaware). CMT provides geotechnical consulting, construction materials testing, ICC code special inspections, forensic investigation and non-destructive testing, environmental consulting, and AASHTO-accredited laboratory testing for commercial, healthcare, education, government, industrial, hospitality, and multifamily residential projects.

WebsitePhone1 office1 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Construction Materials TestingService: ICC Code Special InspectionsIndustry: CommercialIndustry: GovernmentType: Geotechnical Engineering+12 more

Casco Bay Engineering Inc

Portland, ME

Providing Exceptional Quality, Service, and Value to Clients and Communities

WebsitePhone2 offices10 projectsUpdated Jun 2026

Project: Jacob K. Javits Convention Center Expansion

Service: Structural EngineeringService: Structural Design and AnalysisService: 3D Finite Element Analysis & ModelingIndustry: EducationIndustry: HealthcareType: Structural Engineering+11 more

Chang Robotics, LLC

Jacksonville, FL

Cutting-edge engineering & robotics customized for your workforce.

Website1 office8 projects9 leaders2 credentials3 publicationsSize Estimate: 40+ employees

Project: Greenfield Coffee Processing Plant AMR Fleet

Service: Robotics & Automation System DesignService: Feasibility Studies & Technology AssessmentService: Concept & Master Plan DesignIndustry: ManufacturingIndustry: Food & BeverageType: Automation & Controls+33 more

DGT Associates

Boston, MA

Cutting-edge Technology, Rooted in a Legacy of Excellence

WebsitePhone3 offices6 projects10 leadersUpdated Jun 2026

Project: Fenway-Boylston Corridor Development

Service: Land SurveysService: ALTA/NSPS Land Title SurveysService: Boundary SurveysIndustry: CommercialIndustry: ResidentialType: Land Surveying+54 more

DeMase Technical Services

Secure. Compliant. Resilient.

Website8 leaders2 credentialsUpdated Jun 2026

Service detail: Cybersecurity and Information Technology

Service: Cybersecurity and Information TechnologyService: CMMC and C3PAO ServicesService: Cloud and Boundary InfrastructureIndustry: DefenseIndustry: LaboratoriesType: Environmental Engineering+18 more

Dhelo LLC

Engineering communication networks worldwide since 1991

Website8 projectsFounded 1991Updated Jun 2026

Project: CDMA Roll Out

Service: Network Engineering ServicesService: Network RolloutService: RF & Site SurveyIndustry: TelecommunicationsIndustry: Data CentersType: Software Engineering+19 more