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.

Filters1

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

Nitsch Engineering

Boston, MA

Building Better Communities With You

WebsitePhone5 offices5 projects5 leaders3 credentials3 publications

Project: Kennedy Street Green Infrastructure

Service: Civil EngineeringService: Due diligence and permitting strategyService: Site development advisory servicesIndustry: EducationIndustry: AirportsType: Civil Engineering+88 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

O&S Associates

Hackensack, NJ

Experts in new design and restoration engineering

Website6 offices6 projects16 leaders11 credentialsFounded 1996Size Estimate: 100-249 employees

Project: H Mart American Dream

Service: Design and Restoration EngineeringService: New Architectural DesignService: Restoration and RenovationIndustry: CommercialIndustry: ResidentialType: Architecture & Engineering+32 more

Orbis Sibro Inc

Charleston, SC

Engineering Solutions with Purpose, Precision, and Innovation.

WebsitePhone6 offices2 projects15 leaders3 credentialsFounded 2000

Project: MDA SHIELD Support

Service: Government ServicesService: Systems EngineeringService: Logistics and Mission SupportIndustry: GovernmentIndustry: DefenseType: Defense Engineering+9 more

PEER Consultants, P.C.

Washington, DC

Engineers | Scientists | Experts

WebsitePhone1 office3 projects5 leaders9 credentials1 publications

Project: WSSC Asset Management BOA

Service: Wastewater EngineeringService: Wastewater Treatment Plant OperationsService: NPDES Permitting and MonitoringIndustry: WastewaterIndustry: Water SupplyType: Environmental Engineering+21 more

Pacific Aerospace Consulting Inc

San Diego, CA

Innovative Independent Professional Solutions

Website6 offices4 leaders1 credentialsFounded 2004Updated Jun 2026

Service detail: Aerospace Acquisition and Sustainment

Service: Aerospace Acquisition and SustainmentService: Acquisition Strategies and Management SupportService: Program ManagementIndustry: DefenseIndustry: AerospaceType: Aerospace Engineering+29 more

Precision Systems, Inc. (PSI)

Washington, DC

Engineering the Future of Transportation

WebsitePhone1 office6 projects2 credentialsFounded 1994Size Estimate: 10-50 employees

Project: 11th Street NW Bus Priority Project - Transit, Bike and Pedestrian Improvements

Service: Roadway DesignService: Streetlight and Traffic Signal DesignService: Safety Improvement DesignIndustry: GovernmentIndustry: TransportationType: Civil Engineering+41 more

Prime Partners Engineering LLC

Washington, DC

Providing engineering and project management solutions with big goals

Website3 offices2 leaders2 credentialsFounded 2019Updated Jun 2026

Service detail: Power & Utility Engineering

Service: Power & Utility EngineeringService: Distribution EngineeringService: Transmission EngineeringIndustry: UtilitiesIndustry: Electric UtilitiesType: Owner's Engineer+16 more

ProSource Consulting, LLC

Washington, DC

ProSource Consulting, LLC is a Washington, DC metropolitan facilities management and engineering support firm serving federal, state, local, commercial, and institutional clients. It provides operations and maintenance, facilities engineering, spatial data management, inspections, CAD design, project management, and administrative support, with named client work spanning Treasury, NIH, ATF, GSA, VA, DOE, and FDA facilities.

WebsitePhone2 offices1 leaders8 credentialsUpdated Jun 2026

Service detail: Facilities Operations & Maintenance

Service: Facilities Operations & MaintenanceService: Facilities and Engineering ManagementService: Engineering and Management StudiesIndustry: GovernmentIndustry: FederalType: Mechanical Engineering+48 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

ReStl Designers, Inc.

Washington, DC

Structural Excellence, Engineered for the Future

WebsitePhone1 office8 projects6 leadersFounded 1988Size Estimate: 1-25 employees

Project: Morgan State University Student Services Center

Service: Structural EngineeringService: Feasibility StudiesService: Value EngineeringIndustry: EducationIndustry: HospitalityType: Structural Engineering+26 more

ReStl Engineers TX, LLC

Dallas, TX

Leaders in Quality Engineering Solutions

WebsitePhone8 offices5 leadersUpdated Jun 2026

Service detail: MEP Engineering

Service: MEP EngineeringService: MechanicalService: ElectricalIndustry: EducationIndustry: HealthcareType: MEP+13 more

Regulus Group, LLC

Woodstock, VA

Engineering the skies.

WebsitePhone4 offices10 leadersFounded 2002Size Estimate: 200 employeesUpdated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Surveillance SystemsService: Risk and Safety AssessmentIndustry: AviationIndustry: FederalType: Aviation Engineering+8 more

SAVID LLC

San Jose, CA

Satellite & Space Systems Consulting Services

WebsitePhone4 offices2 leaders1 credentialsFounded 2002Size Estimate: 5-25 employees

Service detail: Technical Monitoring & Program Management

Service: Technical Monitoring & Program ManagementService: System and Specialty EngineeringService: Satellite System ArchitectureIndustry: SpaceIndustry: FederalType: Aerospace Engineering+21 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

SK&A Structural Engineers

Washington, DC

Building your future from the ground up.

Website1 office7 projects10 leaders3 credentialsFounded 1960Size Estimate: 50-249 employees

Project: Carroll County Career & Technology Center

Service: Structural EngineeringService: New DesignService: Renovation and AdditionsIndustry: CommercialIndustry: Multifamily ResidentialType: Structural Engineering+10 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

Schnabel Engineering Dc Inc

Washington, DC

Schnabel Engineering DC (SEDC) specializes in innovative and cost-effective geotechnical design solutions. SEDC personnel have over 30 years of experience working in the District of Columbia, Maryland and Virginia and our clientele include government agencies, owners, developers, contractors and A/E firms. Project delivery and cost control are critical to success and SEDC will work with you to meet your needs and the team’s project goals. Our staff is professional and accessible and enjoys small to large projects and the challenge each holds.

Website1 office1 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geostructural EngineeringService: GeosciencesIndustry: CommercialIndustry: EducationType: Environmental Engineering+15 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

Shen Milsom & Wilke

New York, NY

Acoustic, Audiovisual & Technology Design Consultants

WebsitePhone13 offices6 projects36 leadersFounded 1986Size Estimate: 230+ employees

Project: U.S. Embassy in London

Service: AcousticsService: Architectural AcousticsService: Acoustics AssessmentsIndustry: Arts & CultureIndustry: AviationType: Acoustic Consulting+61 more