Public engineering firm directory

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APEX Defense

Huntsville, AL

Elevate Your Defense Strategy

Website1 office1 credentialsUpdated Jun 2026

Service detail: Program Management

Service: Program ManagementService: Strategic PlanningService: Acquisition Life CycleIndustry: DefenseIndustry: FederalType: Defense Engineering+12 more

Allen Engineering and Science

Jackson, MS

Allen Engineering and Science is an environmental, civil, and structural engineering practice serving private and public clients across the southeastern United States. Founded in 1993 as Eco-Systems and renamed in 2013, the company combines engineering, environmental science, planning, and construction management for oil and gas, manufacturing, energy, chemical, solid waste, real estate, and public-sector programs.

WebsitePhone6 offices5 leadersFounded 1993Updated Jun 2026

Service detail: Engineering

Service: EngineeringService: Civil EngineeringService: Environmental EngineeringIndustry: Oil & GasIndustry: ManufacturingType: Civil Engineering+26 more

Atwell

Southfield, MI

We create solutions for the built environment.

Website18 offices12 projects6 leaders8 credentialsSize Estimate: 1,000+ employeesUpdated Jun 2026

Project: Walmart Metro Atlanta Drone Delivery Operations Support

Service: Program & Development ServicesService: Program ManagementService: Owner's Representative ServicesIndustry: Land DevelopmentIndustry: Oil & GasType: Civil Engineering+38 more

Banner Defense, Inc.

Madison, AL

Empowering The Warfighter With Innovative Solutions

Website1 office4 projects1 leadersFounded 2014Updated Jun 2026

Project: Systems Simulation, Software, and Integration (S3I)

Service: Systems EngineeringService: Hardware EngineeringService: Software EngineeringIndustry: DefenseIndustry: AerospaceType: Defense Engineering+21 more

Corporate Environmental Risk Management, LLC

Atlanta, GA

Building Better Communities, Creating Opportunities, and Inspiring the Next Generation

WebsitePhone4 offices4 leadersFounded 1995Size Estimate: 100+ employeesUpdated Jun 2026

Service detail: Remediation and Contracting

Service: Program ManagementService: Environmental ManagementService: Engineering and TestingIndustry: TransportationIndustry: Water ResourcesType: Environmental Engineering+9 more

Croy Engineering

Marietta, GA

Engineering the Extra Mile

WebsitePhone3 offices6 projectsFounded 2005Size Estimate: 100+ employeesUpdated Jun 2026

Project: Chattahoochee Technical College Aviation Training Academy

Service: AviationService: Airport Development & ExpansionService: Initial DevelopmentIndustry: AviationIndustry: AirportsType: Civil Engineering+50 more

DIR Solutions LLC

Woodville, AL

Team with DIR Solutions

WebsitePhone1 officeFounded 2018Updated Jun 2026

Service detail: Integrated Logistics Support

Service: Integrated Logistics SupportService: Sustaining Complex Military Systems Through Comprehensive Logistics PlanningService: AnalysisIndustry: DefenseType: Defense Engineering+10 more

Defense Planning Group

Huntsville, AL

Integrated Solutions for Mission Success

WebsitePhone1 office2 leadersUpdated Jun 2026

Service detail: Master Planning & Programming

Service: Master Planning & ProgrammingService: Program ManagementService: Military Construction (MILCON) SupportIndustry: DefenseIndustry: GovernmentType: Defense Engineering+15 more

Duplantis Design Group, PC

Thibodaux, LA

Broad Vision. Expert Focus.

Website9 offices4 projects10 leadersFounded 1997Updated Jun 2026

Project: Louisiana Clean Energy Complex

Service: Civil EngineeringService: PlanningService: Civil Site DesignIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+50 more

Engineering Design Technologies, Inc.

Marietta, GA

Engineering Design Technologies (EDT) is a fully integrated engineering and design-build firm founded in 1993 and headquartered in Marietta, Georgia. EDT delivers multi-discipline engineering, architecture, construction, and program management across federal, municipal, commercial, healthcare, aviation, and transportation markets from seven offices spanning the Southeast, Mid-Atlantic, and US Virgin Islands. Its four divisions cover engineering, architecture (EDT-THA), construction (EDT Constructors), and development (EDT Development).

WebsitePhone7 offices6 projects1 credentialsFounded 1993Size Estimate: 50-200 employees

Project: CDC Emergency Operations Center

Service: Civil EngineeringService: Stormwater drainage assessment and modelingService: Transportation engineeringIndustry: DefenseIndustry: FederalType: Architecture & Engineering+47 more

Huntsley Innovations, LLC

Huntsville, AL

Making a difference to our customers, the Warfighter and the communities we live and serve in

WebsitePhone1 office1 leadersFounded 2025Updated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Acquisition SupportService: Program ManagementIndustry: DefenseType: Defense Engineering

KHAFRA Engineering Consultants, Inc.

Atlanta, GA

Evaluate - Solve - Deliver

WebsitePhone7 offices4 projects6 leaders10 credentialsFounded 1986

Project: Lincoln Park Green Infrastructure

Service: ArchitectureService: Architectural designService: Design/Build deliveryIndustry: FederalIndustry: GovernmentType: Architecture & Engineering+71 more

Kheops Architecture Engineering Survey D P C

Atlanta, GA

Evaluate - Solve - Deliver

Website10 offices7 leaders2 credentialsFounded 1917Updated Jun 2026

Service detail: Construction Services

Service: ArchitectureService: Civil and Site EngineeringService: Construction ServicesIndustry: Arts & CultureIndustry: AviationType: Architecture & Engineering+31 more

OLH Inc.

Augusta, GA

Trusted solutions for engineering and construction

WebsitePhone4 offices1 projects10 leaders1 credentialsFounded 1993

Project: Atlanta City Courts Construction

Service: Construction ManagementService: Federal ProgramsService: Technical and Construction SupportIndustry: TransportationIndustry: InfrastructureType: Civil Engineering+25 more

Poly, Inc.

Dothan, AL

Architecture & Engineering Services

WebsitePhone4 offices6 projects12 leaders1 credentialsFounded 1959

Project: Okaloosa Island Water Booster Station Replacement

Service: ArchitectureService: Building design and programmingService: Construction documentation and administrationIndustry: GovernmentIndustry: WastewaterType: Architecture & Engineering+72 more

RS&H

Jacksonville, FL

Creating Tomorrow, Together.

Website74 offices3 leaders2 credentialsFounded 1941Updated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Interior DesignService: Landscape ArchitectureIndustry: AerospaceIndustry: AviationType: Architecture & Engineering+25 more

Volkert, Inc.

Mobile, AL

Delivering the future of infrastructure

WebsitePhone1 officeFounded 1925Updated Jun 2026

Service detail: Planning + Environmental

Service: Planning + EnvironmentalService: Complete Streets + Bicycle/PedestrianService: Environmental Studies + PermittingIndustry: Highways & RoadsIndustry: TransportationType: Civil Engineering+43 more

WILL Technology, Inc.

Huntsville, AL

Insight, Imagination, Expertise... and Flawless Execution

Website1 office2 leadersFounded 2000Updated Jun 2026

Service detail: Program Management

Service: Program ManagementService: Test and EvaluationService: Modeling and SimulationIndustry: DefenseIndustry: FederalType: Defense Engineering+6 more

WaveLink, Inc.

Huntsville, AL

Your Small Business of Choice in Huntsville's Technical Landscape

WebsitePhone1 office3 leaders11 credentialsUpdated Jun 2026

Service detail: Aviation Engineering

Service: Aviation EngineeringService: Aircraft IntegrationService: Airworthiness QualificationIndustry: DefenseIndustry: AviationType: Aviation Engineering+23 more