Public engineering firm directory

Find engineering consulting firms by capability and location.

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AES Group, Inc.

Parker, CO

Providing Engineering and Architecture Services Since 2002

WebsitePhone1 office4 projects5 leaders20 credentialsFounded 1988

Project: Pikes Peak National Cemetery Master Plan & Design

Service: Civil EngineeringService: Site DesignService: GradingIndustry: GovernmentIndustry: FederalType: Architecture & Engineering+38 more

AMP Optics LLC

Blue-Sky to Reality

Website6 publicationsFounded 2010Updated Jun 2026

Service detail: Optical Design and Engineering

Service: Optical Design and EngineeringService: Advanced Optical DesignService: Optical System Concept DevelopmentIndustry: AerospaceIndustry: DefenseType: Electrical Engineering+26 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

Altman Browning & Company

Portland, OR

Comprehensive engineering services grounded in strict adherence to international and industry-specific standards.

WebsitePhone1 office5 credentialsFounded 1990Updated Jun 2026

Service detail: Engineering Design & Analysis

Service: Engineering Design & AnalysisService: Heavy Industrial Machine DesignService: Complex 3D CAD ModelingIndustry: IndustrialIndustry: ManufacturingType: Mechanical Engineering+12 more

Armant LLC

Data-driven aerospace engineering modeling, simulation, and testing services.

Website5 leadersSize Estimate: 1-9 employeesUpdated Jun 2026

Service detail: Modeling and Simulation

Service: Modeling and SimulationService: Multi-Physics SimulationService: CFD and Aerothermal SimulationIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+27 more

Associated Design Group Inc

Lafayette, LA

Engineering Excellence. Energy Efficiency. Proven Results.

WebsitePhone3 offices4 projects42 leaders12 credentialsFounded 1981

Project: Caesars Superdome

Service: Mechanical DesignsService: HVAC & Climate ControlService: Plumbing & Piping DesignIndustry: Arts & CultureIndustry: CommercialType: Electrical Engineering+24 more

Bandwidth Solutions Inc

McLean, VA

Engineering & Management

WebsitePhone1 officeUpdated Jun 2026

Service detail: Program and Project Management

Service: Program and Project ManagementService: Project ManagementService: Budgeting and Cost AnalysisIndustry: AerospaceIndustry: SpaceType: Telecom / RF Engineering+38 more

Bath Group, LLC

Corpus Christi, TX

A quality-conscious engineering practice dedicated to achieving client expectations through responsible engineering

Website3 offices4 leaders12 credentialsFounded 1957Size Estimate: 50+ employeesUpdated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Low Voltage SystemsService: Medium Voltage SystemsIndustry: CommercialIndustry: EducationType: Electrical Engineering+25 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

Cayley Aerospace Inc.

Las Vegas, NV

Innovative Engineering Solutions for a Sustainable Future

WebsitePhone1 office2 projects1 leaders3 credentialsSize Estimate: 2-20 employees

Project: Commercial HVAC System Design and Installation

Service: Civil EngineeringService: Comprehensive DesignService: Engineering Support For StructuralIndustry: AerospaceIndustry: AviationType: Civil Engineering+30 more

Clay Allen Design

Sacramento, CA

From napkin sketches to production, delivering mechanical engineering and industrial design to bring complex products to market.

WebsitePhone1 office1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Mechanical Engineering & Product Design

Service: Mechanical Engineering & Product DesignService: Industrial Design ServicesService: Aerospace & Defense Spec DesignIndustry: AerospaceIndustry: DefenseType: Mechanical Engineering+15 more

DuBois & King

Randolph, VT

DuBois & King is a multidisciplinary professional consulting practice providing planning, engineering, survey, permitting, and environmental services since 1962. Its technical disciplines span civil, structural, environmental, mechanical, and electrical engineering, surveying, and landscape architecture. D&K serves federal and state agencies, municipalities, healthcare and education facilities, industrial and commercial buildings, housing developments, and energy sector clients. Operating as a 100 percent entity, it focuses on delivering collaborative, sustainable, and resilient solutions for municipal and regional infrastructure across New England, New York, and the Southwest.

WebsitePhone12 offices5 projects3 leaders11 credentialsFounded 1962

Project: Glencliff Micro-Hydro

Service: PlanningService: Transportation EngineeringService: Bicycle and Pedestrian InfrastructureIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+36 more

Engineering Design Services LLC

Corpus Christi, TX

Your Trusted Engineering Consulting Partner

WebsitePhone4 offices4 leadersFounded 2018Size Estimate: 20-100 employeesUpdated Jun 2026

Service detail: Mechanical & Piping Engineering

Service: Mechanical & Piping EngineeringService: Equipment & Piping DesignService: Balance of Plant (BoP) DesignIndustry: PetrochemicalIndustry: Oil & GasType: Process Engineering+47 more

Fayda Engineering and Energy Solutions

Wilmington, DE

Fayda Engineering & Energy Solutions offers a wide range of services to the building construction industry. With over 25 years experience in the field of Consulting Engineering, we bring our clients expertise in the disciplines of Energy, Electrical, Mechanical, Plumbing, Fire Protection Engineering. Clients include State Agencies, Architects, Engineers, Facility Managers, Real Estate Developers as well as Contractors and Energy Services Companies. We offer a broad range of services to ensure a comprehensive engineering solution. To be effective in managing a given project, we have developed a business model that incorporates services in both the Energy and Engineering Sectors, with each department cross trained to provide both a cost effective and energy efficient solution to any project.

Website1 office2 leaders4 credentialsFounded 2009Updated Jun 2026

Service detail: Energy Engineering

Service: Energy EngineeringService: Energy Star BenchmarkingService: Utility Bill AnalysisIndustry: HealthcareIndustry: Justice & CorrectionsType: Electrical Engineering+27 more

Hurst-Rosche, Inc.

Hillsboro, IL

Founded in 1937 and headquartered in Hillsboro, Illinois, Hurst-Rosche is a total in-house, multi-discipline architecture and engineering practice with six offices across Illinois, Missouri, and Tennessee. Bringing together architecture, civil, structural, mechanical, electrical, geotechnical, environmental, and surveying capabilities under one roof, it delivers planning, design, and construction-related services on projects ranging from school performing arts centers and water treatment plants to transportation infrastructure and institutional facilities. Projects have earned Illinois Capital Development Board Thomas Madigan Awards, AIA Design Awards, and ACEC Excellence Awards.

WebsitePhone6 offices6 projects3 leaders4 credentialsFounded 1937

Project: Murphysboro High School Performing Arts Center

Service: ArchitectureService: Educational Facility DesignService: Government & Institutional Facility DesignIndustry: EducationIndustry: GovernmentType: Architecture & Engineering+37 more

HyPerComp Engineering Inc.

Brigham City, UT

A Heritage of Innovation

WebsitePhone1 office6 projects1 leadersFounded 1996Updated Jun 2026

Project: NASA Spacecraft COPV Development

Service: Composite Vessel Engineering and AnalysisService: Filament Winding Structural SimulationService: Thick and Thin Wall Structural OptimizationIndustry: AerospaceIndustry: SpaceType: Aerospace Engineering+27 more

Ingenium Technical Services, Inc.

Cupertino, CA

Ingenium Technical Services, Incorporated (ITSI) is a Cupertino, California-based aerospace engineering services and technology company founded by senior engineers with over 100 years of combined industry experience. Ingenium specializes in thermal engineering of ground- and space-based systems, covering design and analysis from cryogenic through high-temperature applications, and supports clients from design concept through testing and mission operations. It serves NASA, federally funded research centers, and prime aerospace contractors, and also offers mechanical design, contamination control, and systems engineering support.

WebsitePhone1 office4 projectsUpdated Jun 2026

Project: NASA LADEE (Lunar Atmosphere and Dust Environment Explorer)

Service: Thermal Design and AnalysisService: Ground-based Thermal Control SystemsService: High-altitude Balloon MissionsIndustry: AerospaceIndustry: SpaceType: Aerospace Engineering+18 more

Jacob Feinberg Katz & Michaeli Consulting Group LLC

Award-winning full-service MEP and fire protection engineering consulting

Website4 leaders4 credentialsFounded 2007Size Estimate: 10-49 employeesUpdated Jun 2026

Service detail: MEP and Fire Protection Engineering

Service: MEP and Fire Protection EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: CommercialIndustry: EducationType: MEP+17 more

Korda Nemeth Engineering Inc

Columbus, OH

Unparalleled customer service, collaborative teams, and thoughtful designs.

WebsitePhone1 office16 projects14 leaders18 credentials2 publications

Project: Ohio Expo Center State Fairgrounds Improvements

Service: MEP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: AirportsIndustry: CommercialType: Civil Engineering+33 more

Lightspeed Space

Empowering Space Exploration Through Precision Thermal Solutions

Website2 credentialsUpdated Jun 2026

Service detail: Space Vehicle Engineering

Service: Space Vehicle EngineeringService: Vehicle Thermal DesignService: Thermal Modeling & SimulationIndustry: SpaceType: Aerospace Engineering+6 more

Nakamura, Oyama & Associates, Inc.

Electrical, Telecommunication, Security, AV and Fire Protection Consulting Engineers of Hawaii

Website5 projects1 leaders2 credentialsFounded 1985Updated Jun 2026

Project: Tripler Army Medical Center Additions and Upgrades

Service: Consulting and PlanningService: Engineering ConsultationService: Master PlanningIndustry: CommercialIndustry: IndustrialType: Electrical Engineering+22 more

North Arrow, Inc.

Washington, DC

Future Focused Engineering

WebsitePhone1 office10 projects2 leaders2 credentialsFounded 2015

Project: Smoke Control Special Inspection, Ronald Reagan National Airport

Service: Engineering DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: FederalIndustry: DefenseType: MEP+27 more

Okahara and Associates, Inc.

Hilo, HI

A Local Engineering Firm Serving Our Community

WebsitePhone2 offices4 projects26 credentialsFounded 1979Updated Jun 2026

Project: Awa Street Wastewater Pump Station Force Main and Sewer System Improvements - Waiakamilo Road Trunk Sewer

Service: Civil EngineeringService: Site Work DesignService: Subdivision DesignIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+30 more

Olsson

Lincoln, NE

Engineering trust.

Website10 offices5 projects10 leaders16 credentials2 publicationsFounded 1956

Project: Baylor Scott & White Medical Center and Clinic in Pflugerville

Service: Civil & Site EngineeringService: Site Design and DevelopmentService: Land SurveyingIndustry: CommercialIndustry: ResidentialType: Civil Engineering+39 more