Public engineering firm directory

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American Infrastructure Development, Inc.

Tampa, FL

Innovative Architectural and Engineering Solutions

WebsitePhone7 offices11 projects6 leadersFounded 2009Updated Jun 2026

Project: Henry E. Rohlsen International Airport (STX) - Terminal Improvements, Phase 1

Service: ArchitectureService: Airport Terminals, FBOs, and GA FacilitiesService: Hotels, Administrative Offices, and Public-Use BuildingsIndustry: AviationIndustry: AirportsType: Architecture & Engineering+26 more

Baskervill & Son, P.C.

Richmond, VA

Ask. Listen. Create.

Website7 offices3 leaders1 credentialsFounded 1897Updated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Interior DesignService: Space PlanningIndustry: HospitalityIndustry: HealthcareType: Architecture & Engineering+27 more

CSA Group

San Juan, PR

Full-Service Project Delivery and Program Management

WebsitePhone8 offices5 projects5 leaders4 credentialsSize Estimate: 50-199 employees

Project: PR-52 Congestion Management Project

Service: Program & Construction ManagementService: Program ManagementService: Construction ManagementIndustry: AirportsIndustry: CommercialType: Architecture & Engineering+37 more

Ceed Civil Engineering

Vienna, VA

Licensed Civil & Structural Engineers | Nationwide Engineering Services

WebsitePhone5 officesUpdated Jun 2026

Service detail: Site Planning

Service: Site PlanningService: Standard Site PlansService: Grading PlansIndustry: ResidentialIndustry: CommercialType: Civil Engineering+21 more

Cerami & Associates

New York City, NY

Acoustic Design + Technology Consulting

WebsitePhone9 offices1 leadersFounded 1965Updated Jun 2026

Service detail: Acoustic Design

Service: Acoustic DesignService: Architectural, Building Services & Interior AcousticsService: Sound Masking and Acoustic PrivacyIndustry: CommercialIndustry: Arts & CultureType: Acoustic Consulting+24 more

Complete Structural Consulting, Inc.

Indianapolis, IN

Providing Peace of Mind Through Tailored Design Solutions

WebsitePhone4 offices9 projects9 leadersFounded 2012Size Estimate: 11-50 employees

Project: Arizona State University - Steel Joists & Deck

Service: Delegated Structural DesignService: Steel Connection DesignService: Stair & Handrail DesignIndustry: ManufacturingIndustry: IndustrialType: Structural Engineering+18 more

Ehlert Bryan, Inc.

Tysons, VA

40+ Years of Excellence in Structural Engineering

WebsitePhone3 offices8 projects9 leaders10 credentialsFounded 1981

Project: The Highlands

Service: Structural DesignService: Repair and RestorationService: Adaptive ReuseIndustry: CommercialIndustry: FederalType: Structural Engineering+11 more

GEM Government Services

Miami, FL

GEM Government Services (GGS) supports public and private organizations with specialized defense engineering, safeguards and security, and program management services. Founded by principals with extensive experience in the global defense industry, GGS delivers physical security systems design, vulnerability assessments, and tactical training support. GGS provides critical security solutions to federal agencies, including the Department of Energy, the National Nuclear Security Administration, and the Department of Homeland Security, protecting high-consequence nuclear weapons and petroleum infrastructure worldwide.

WebsitePhone3 officesUpdated Jun 2026

Service detail: Safeguards and Security Program Management

Service: Safeguards and Security Program ManagementService: Provides Comprehensive OversightService: Compliance ReviewsIndustry: GovernmentIndustry: FederalType: Defense Engineering+31 more

Geo-Technology Associates, Inc.

Laurel, MD

Growing Together To Enhance Our Built Environment

WebsitePhone28 offices5 projectsSize Estimate: 600 employeesUpdated Jun 2026

Project: Ewing Town Center

Service: Geotechnical ServicesService: Construction ServicesService: High-Rise Building ConstructionIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+13 more

Green Expert Technology Inc.

Haddonfield, NJ

Helping Clients Reach Their Mission. Helping Employees Reach Their Goals.

WebsitePhone6 offices5 projects6 leaders6 credentialsUpdated Jun 2026

Project: Support for US Navy Machinery Control Systems on DDG 51 Class Ships

Service: Systems EngineeringService: Integrated Bridge & Navigation SystemsService: Steering & Ship Control SystemsIndustry: DefenseIndustry: FederalType: Defense Engineering+26 more

HDR | Nova Consulting

Miami (Doral), FL

HDR | Nova Consulting specializes in civil and environmental engineering, construction management, and program management services. It supports public sector clients across Florida, New York, Washington D.C., and Maryland, focusing on water resources, transportation, infrastructure resilience, and environmental planning. Its multidisciplinary team includes professional engineers, scientists, and geologists who deliver services from initial project planning and environmental assessments through construction and final close-out.

WebsitePhone5 offices5 projects7 leadersUpdated Jun 2026

Project: Gowanus Pump Station

Service: Civil EngineeringService: Civil Infrastructure DesignService: Stormwater ManagementIndustry: Water ResourcesIndustry: WastewaterType: Civil Engineering+23 more

Henderson Engineers

Lenexa, KS

Henderson Engineers is a national building systems engineering design and facility consulting firm headquartered in Lenexa, Kansas, with 15 offices across the United States. Its team of more than 1,000 engineers provides mechanical, electrical, plumbing, fire and life safety, refrigeration, telecommunications, security, acoustics, and commissioning services for retail, healthcare, commercial, grocery and distribution, sports venue, and data center markets.

Website15 offices4 leaders2 credentials2 publicationsSize Estimate: 1,000 employeesUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC SystemsService: Air DistributionIndustry: CommercialIndustry: RetailType: MEP+29 more

Hillis-Carnes Engineering Associates

Annapolis Junction, MD

Your Foundation for Success

WebsitePhone21 offices7 projects3 leaders3 credentialsFounded 1993

Project: Anthem House Luxury Residential Development

Service: Geotechnical EngineeringService: Subsurface investigations and soil boringsService: Foundation design recommendationsIndustry: CommercialIndustry: Land DevelopmentType: Environmental Engineering+56 more

Kittelson & Associates

Orlando, FL

Transforming how communities move

WebsitePhone31 offices6 projects3 publicationsFounded 1984Size Estimate: 200-500 employees

Project: Lancaster County Freight Infrastructure Prioritization

Service: Transportation PlanningService: Corridor and regional studiesService: Freight planning and infrastructure prioritizationIndustry: GovernmentIndustry: FederalType: Transportation Engineering+44 more

M&J Engineering

New Hyde Park, NY

Innovative and State-Of-The-Art Solutions

WebsitePhone18 offices11 projects13 leadersFounded 2004Updated Jun 2026

Project: MTA Metro-North Railroad Penn Station Access

Service: Consulting EngineeringService: Environmental ServicesService: Construction ManagementIndustry: TransportationIndustry: TransitType: Civil Engineering+7 more

Modjeski and Masters, Inc.

Mechanicsburg, PA

One of the world's leading bridge engineering practices

WebsitePhone19 offices7 projects2 leaders2 credentialsFounded 1893

Project: Hawk Falls Bridge Replacement

Service: Bridge DesignService: Fixed Bridge DesignService: Movable Bridge DesignIndustry: BridgesIndustry: TransportationType: Structural Engineering+26 more

R.G. Vanderweil Engineers, LLP

Boston, MA

Engineering Excellence

Website9 offices5 projects5 leadersSize Estimate: 500 employeesUpdated Jun 2026

Project: Massachusetts Institute of Technology, Central Plant Upgrade

Service: MEP/FP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: HealthcareIndustry: EducationType: MEP+25 more

RESPEC Company LLC

Rapid City, SD

Practical Outcomes From Complex Challenges

WebsitePhone19 offices3 leadersUpdated Jun 2026

Service detail: Infrastructure Resiliency and Modernization

Service: Infrastructure Resiliency and ModernizationService: Transportation NetworksService: Water SystemsIndustry: MiningIndustry: TransportationType: Civil Engineering+43 more

SETTY

Fairfax, VA

Deliver High Performing Complex Buildings

WebsitePhone10 offices8 projectsFounded 1984Size Estimate: 100-250 employeesUpdated Jun 2026

Project: DCPS: COVID Retrofits / Emergency Indoor Air Quality Retrofits

Service: MEP/FP EngineeringService: Mechanical EngineeringService: GeothermalIndustry: HealthcareIndustry: LaboratoriesType: Automation & Controls+47 more

SETTY & Associates

Washington, DC

Design | Engineering | Sustainability

WebsitePhone12 offices12 projects9 leaders9 credentialsFounded 1984

Project: DCPS COVID / Emergency IAQ Retrofits

Service: MEP/FP EngineeringService: Mechanical HVAC Systems DesignService: Electrical Power and Lighting SystemsIndustry: HealthcareIndustry: LaboratoriesType: MEP+39 more

Saalex Corporation

Washington, DC

Information Engineering & Technologies

Website5 offices3 projects8 leaders7 credentialsFounded 1999Updated Jun 2026

Project: TARIF IPT Contractor Support Services

Service: Engineering Support ServicesService: Systems EngineeringService: Test and Evaluation SupportIndustry: AerospaceIndustry: DefenseType: Defense Engineering+22 more

Sellers & Associates, LLC

Chesapeake, VA

Adding Value, Reducing Risk

WebsitePhone4 offices8 leaders9 credentialsFounded 2015Updated Jun 2026

Service detail: Program & Project Management

Service: Program & Project ManagementService: Training & Training TechnologyService: Integrated Logistics SupportIndustry: GovernmentIndustry: FederalType: Defense Engineering+23 more

Sera Engineered, LLC

Washington, DC

Engineering the Future

WebsitePhone2 offices7 projects5 leadersFounded 2019Updated Jun 2026

Project: 1525 Broadway Road

Service: Site DesignService: Commercial Site DesignService: Residential Site DesignIndustry: CommercialIndustry: ResidentialType: Civil Engineering+41 more

Syska Hennessy Group

Atlanta, GA

Engineering the Amazing

WebsitePhone21 offices7 projects10 leaders1 credentials2 publications

Project: Mount Sinai Behavioral Health Center

Service: MEP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: AviationIndustry: Power GenerationType: Automation & Controls+39 more