Public engineering firm directory

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AED Energy Services

Wyomissing, PA

Designing America's Energy Lifelines

WebsitePhone4 offices9 leaders4 credentialsFounded 1989Updated Jun 2026

Service detail: Chemical and Process Design

Service: Chemical and Process DesignService: Documentation and AnalysisService: Specialized CalculationsIndustry: Oil & GasIndustry: PetrochemicalType: Chemical Engineering+64 more

AIM Engineering & Surveying, Inc.

Fort Myers, FL

Innovative Engineering Solutions Since 1980

WebsitePhone5 offices8 projects3 leadersFounded 1980Updated Jun 2026

Project: I-75 (SR93A) Reconstruction, Hillsborough County

Service: Transportation Engineering & DesignService: RoadwaysService: MultimodalIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+33 more

AKS Engineering & Forestry

Tualatin, OR

Practical Solutions. Designed to Last.

WebsitePhone1 officeFounded 1996Size Estimate: 600+ employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Design & GradingService: UtilitiesIndustry: InfrastructureIndustry: Land DevelopmentType: Civil Engineering+35 more

Afterburner Wind Tunnel Services LLC

Northern Virginia, VA

Afterburner Wind Tunnel Services LLC is a Northern Virginia engineering firm providing safety, systems, and weapons engineering support to Industry, Department of Defense agencies, and other federal entities. Its work spans aviation, weapons systems, research, testing, development and evaluation, and technology programs, with a team experienced in rapid-development defense programs.

Website1 office2 leadersUpdated Jun 2026

Service detail: Safety Engineering

Service: Safety EngineeringService: System Safety Program DevelopmentService: Hardware and Software Safety AnalysisIndustry: DefenseIndustry: FederalType: Defense Engineering+11 more

Air Resource Specialists, Inc.

Fort Collins, CO

A leader in the field of air quality for over 40 years.

Website1 office8 projects1 leaders2 credentials3 publicationsSize Estimate: 35 employees

Project: National Park Service Air Quality Conditions & Trends Website

Service: Air MonitoringService: Criteria Pollutants MonitoringService: Toxics & Hazardous Air PollutantsIndustry: GovernmentIndustry: FederalType: Environmental Engineering+33 more

Apex Engineering Group

Fargo, ND

Apex Engineering Group brings clarity and confidence to complex engineering projects.

WebsitePhone7 offices11 projects5 leaders18 credentialsFounded 2010

Project: City of Detroit Lakes, MN Municipal Engineering Services

Service: Water EngineeringService: Water wells and intake structuresService: On-site pilot plantsIndustry: GovernmentIndustry: Water ResourcesType: Civil Engineering+83 more

Baer Engineering and Environmental Consulting, Inc.

Austin, TX

Sustainability through responsible engineering of the built environment.

WebsitePhone1 office9 projects2 credentialsFounded 1992Size Estimate: 1-25 employees

Project: Austin Bergstrom International Airport ConRAC Facility

Service: Engineering and Water ResourcesService: BMP ServicesService: National Flood Insurance Program RegulationsIndustry: EducationIndustry: HealthcareType: Chemical Engineering+83 more

Blue Ridge Research and Consulting, LLC

Asheville, NC

Acoustical engineering and research solutions for defense, aerospace, and aviation programs

WebsitePhone1 office10 leadersFounded 2006Updated Jun 2026

Service detail: Noise Measurement & supporting detail Characterization

Service: Noise Measurement & supporting detail CharacterizationService: Aircraft and Jet Noise MeasurementsService: Rocket and Spacecraft Launch MeasurementsIndustry: DefenseIndustry: AerospaceType: Acoustic Consulting+30 more

Brown, Mitchell & Alexander, Inc.

Gulfport, MS

Working to build a better Gulf Coast

WebsitePhone3 offices9 projects3 leadersUpdated Jun 2026

Project: Keesler Gate and Division Street Improvements

Service: Civil EngineeringService: Roadway and Utility InfrastructureService: Coastal DevelopmentsIndustry: GovernmentIndustry: Highways & RoadsType: Civil Engineering+28 more

CJSeto Support Services, LLC

Ventura, CA

CJSeto Support Services, LLC is an environmental compliance, safety, information technology, logistics, and workforce training firm headquartered in Ventura, California. Founded in 1999, CJSeto holds ISO 9001:2015 certification and serves federal agencies, educational institutions, healthcare providers, and commercial clients. Its environmental practice covers hazardous waste management, EPA and RCRA compliance, NEPA documentation, spill prevention planning, environmental monitoring and remediation, and asbestos and lead monitoring. Its safety and industrial hygiene practice encompasses OSHA compliance audits, indoor air quality testing, chemical inventory management, respiratory protection, and hazard assessments. Additional service areas include IT infrastructure, cybersecurity and information assurance, logistics and inventory management, and professional training including HAZWOPER, OSHA, and EPA compliance courses. Federal clients include the U.S. Navy, Department of Homeland Security, NASA, and the Veterans Administration.

WebsitePhone1 office1 credentialsFounded 1999Updated Jun 2026

Service detail: Environmental Compliance

Service: Environmental ComplianceService: Hazardous Waste ManagementService: Environmental Monitoring and SamplingIndustry: FederalIndustry: DefenseType: Environmental Engineering+22 more

CKL Engineers

Engineering Excellence Every Time

Website2 leaders2 credentialsUpdated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Airport Design and Construction ServicesService: Transit Construction ManagementIndustry: AviationIndustry: Highways & RoadsType: Civil Engineering+14 more

CORE Environmental Consultants, Inc.

Buffalo, NY

Innovative Engineering & Environmental Solutions

WebsitePhone2 offices10 projects6 leaders20 credentialsFounded 2004

Project: Community Air Monitoring Parks - NYC Park Reconstruction Project

Service: Hazardous Materials ConsultingService: Asbestos Surveys and Abatement DesignService: Lead-Based Paint Inspections & Risk AssessmentsIndustry: GovernmentIndustry: TransportationType: Environmental Engineering+57 more

Cedarville Engineering Group, LLC

Pottstown, PA

Plan. Design. Build. Greatness.

WebsitePhone1 office8 projectsFounded 2010Size Estimate: 25-100 employeesUpdated Jun 2026

Project: Industrial Stormwater Compliance

Service: Civil EngineeringService: Capital Improvements Planning and DesignService: Stormwater Management DesignIndustry: FederalIndustry: GovernmentType: Civil Engineering+71 more

Columbia Telecommunications Corporation

Bethesda, MD

Closing the digital divide

WebsitePhone1 office1 projectsUpdated Jun 2026

Project: Oregon Statewide Broadband Expansion Partnership

Service: Network Engineering & DesignService: High-Level Network DesignService: Detailed Outside Plant (OSP) EngineeringIndustry: TelecommunicationsIndustry: GovernmentType: Telecom / RF Engineering+26 more

Covington Civil and Environmental

Gulfport, MS

Gulf Coast Engineering + Environmental Solutions

WebsitePhone1 office6 projects8 leadersFounded 1992Size Estimate: 30+ employees

Project: City of Pass Christian ARPA Funded Projects

Service: Program & Project ManagementService: Program coordination and planningService: Contract and document managementIndustry: GovernmentIndustry: FederalType: Civil Engineering+61 more

Cross Timbers Consulting

Meeting the needs of Tribal Transportation Programs

Website10 leaders8 credentialsSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Transportation Planning

Service: Transportation PlanningService: Master PlanningService: Safety PlanningIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+39 more

DJ&A, P.C.

Missoula, MT

Engineering, Surveying, Environmental & Planning Services

WebsitePhone3 officesFounded 1973Size Estimate: 150+ employeesUpdated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Roadway and Highway DesignService: Logging Road EngineeringIndustry: FederalIndustry: GovernmentType: Civil Engineering+43 more

DOWL

Portland, OR

Small-Town Service, Big-Time Experts

Website5 offices8 projects12 leadersUpdated Jun 2026

Project: Choteau Wastewater Collection and Treatment Plant

Service: Environmental ServicesService: Environmental StudiesService: Environmental Planning and PermittingIndustry: AviationIndustry: AirportsType: Civil Engineering+35 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

Decota Consulting Company, Inc.

Cross Lanes, WV

Decota Consulting Company, Inc. is an environmental engineering practice based in Cross Lanes, West Virginia, serving landowners, government agencies, nonprofits, and private industry throughout the Appalachian region since 1996. Its engineers and scientists bring expertise in ecology, hydrology, environmental engineering, and regulatory permitting. Decota supports baseline assessments, design, permitting, construction oversight, implementation, and post-construction monitoring, with an established track record working alongside federal, state, and local regulatory agencies.

WebsitePhone1 office3 projectsFounded 1996Updated Jun 2026

Project: AML North Contract 6 EA and Construction Management

Service: Environmental EngineeringService: Mine Site Layout DesignService: Geologic Modeling and Reserve AnalysisIndustry: Environmental & RemediationIndustry: Natural ResourcesType: Environmental Engineering+27 more

Dokken Engineering

Folsom, CA

Transforming design.

WebsitePhone4 offices7 projects12 leaders3 credentialsFounded 1986

Project: Zittle Family Amphitheater Shade Structure

Service: Feasibility & FundingService: Grant Writing SupportService: Preliminary Engineering & Environmental ServicesIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+24 more

Dominion Due Diligence Group

Midlothian, VA

Navigating pathways to affordable, available, and resilient housing through expert environmental, engineering, and energy due diligence.

WebsitePhone3 offices2 projects11 leaders1 credentialsFounded 1994

Project: Transforming Affordable Housing in Virginia: A RAD/LIHTC Renovation

Service: Environmental Due Diligence & ComplianceService: Phase I & II Environmental Site AssessmentsService: HEROS Environmental ReviewsIndustry: Affordable HousingIndustry: Multifamily ResidentialType: Environmental Engineering+31 more

EMCS, Inc.

Milwaukee, WI

Transforming Challenges into Solutions

Website5 officesFounded 1983Updated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Roadway DesignService: Drainage & Stormwater QualityIndustry: TransportationIndustry: GovernmentType: Civil Engineering+21 more

FlowWest, LLC

Oakland, CA

Solving the greatest water resources challenges.

Website1 office17 projects6 leaders3 credentials4 publicationsSize Estimate: 10-50 employees

Project: Courtland Creek Restoration Project

Service: River & Floodplain RestorationService: Fish passage barrier removalService: Floodplain reconnectionIndustry: FederalIndustry: GovernmentType: Environmental Engineering+32 more