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.

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A & S Engineers, Inc.

San Francisco, CA

Full-service Mechanical, Electrical, Plumbing Engineering and Commissioning Firm

Website1 office6 leadersUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC & Hydronic SystemsService: Energy Modeling & AnalysisIndustry: Multifamily ResidentialIndustry: Data CentersType: MEP+18 more

A2e Technologies

San Diego, CA

Electronic Design Built for Critical Programs

WebsitePhone1 office9 projects8 credentialsUpdated Jun 2026

Project: 600W Power Factor Corrector

Service: Electronics Design ServicesService: Hardware DesignService: PCB Design and LayoutIndustry: DefenseIndustry: AerospaceType: Electrical Engineering+24 more

AEi Systems, Inc.

Centennial, CO

Analytical HEAVY Lifting

WebsitePhone2 offices9 publicationsFounded 1995Size Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Worst-Case Circuit Analysis (WCCA)

Service: Worst-Case Circuit Analysis (WCCA)Service: Pre-WCCA design review and assessmentService: WCCA document reviewIndustry: ElectronicsIndustry: SpaceType: Electrical 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

Advance Design Consultants Inc

San Jose, CA

Experience. Passion. Excellence.

WebsitePhone1 office7 projects2 leadersFounded 1984Updated Jun 2026

Project: BD Utility Chiller Plant (Project Granite)

Service: Architecture & PlanningService: Architectural DesignService: Architectural PlanningIndustry: CommercialIndustry: Data CentersType: Architecture & Engineering+38 more

Advanced Automation LLC

Dover, NH

New England automation solutions and custom machinery

WebsitePhone1 office6 credentialsUpdated Jun 2026

Service detail: Automation Systems Integration

Service: Automation Systems IntegrationService: Robotic Machine TendingService: Robotic Machining SystemsIndustry: ManufacturingIndustry: DefenseType: Automation & Controls+23 more

Advanced hCMOS Systems LLC

Discover something new with an hCMOS detector

Website4 leaders5 publicationsUpdated Jun 2026

Service detail: Custom IC Design

Service: Custom IC DesignService: Radiation-Hardened ASIC DesignService: High-Speed Photodiode DesignIndustry: ElectronicsIndustry: SemiconductorsType: Electrical Engineering+10 more

Advantek Engineering Inc.

Orlando, FL

Designs for Automation, Prototypes and Product Engineering

WebsitePhone1 office1 leadersFounded 1992Updated Jun 2026

Service detail: Automated Machinery

Service: Automated MachineryService: Assembly, Sorters, Pick & PlaceService: Automated Lens Alignment & UV GluingIndustry: Automation & ControlsIndustry: RoboticsType: Mechanical Engineering+30 more

AlfaTech

Harmonizing Relationships, Sustainability and Innovation

Website10 projects13 leadersUpdated Jun 2026

Project: The Lucas Museum of Narrative Art

Service: MEP EngineeringService: Mechanical Engineering DesignService: Electrical Engineering DesignIndustry: CommercialIndustry: RetailType: MEP+65 more

Alliance Technical Group

Decatur, AL

Alliance Technical Group is a full-service environmental services company founded in 2000 in Decatur, Alabama, with over 2,200 employees and more than 60 testing and laboratory locations across the United States and Canada. Alliance helps industrial, manufacturing, energy, and government clients achieve environmental compliance through on-site testing and monitoring, laboratory testing and analysis, and regulatory consulting. The company operates 110-plus mobile laboratories and delivers services across stack testing, LDAR, ambient air monitoring, CEMS, and environmental consulting.

WebsitePhone1 office4 leadersFounded 2000Updated Jun 2026

Service detail: Environmental Compliance

Service: Environmental ComplianceService: Regulatory StrategyService: Compliance AuditsIndustry: IndustrialIndustry: ChemicalsType: Environmental Engineering+19 more

Anguil Environmental Systems

Milwaukee, WI

Innovative Pollution Control Technologies

WebsitePhone1 office3 credentialsFounded 1978Updated Jun 2026

Service detail: Air Pollution Control

Service: Air Pollution ControlService: Regenerative Thermal Oxidizers (RTOs)Service: Catalytic Recuperative Oxidizers (CATOXs)Industry: ManufacturingIndustry: Food & BeverageType: Environmental Engineering+22 more

Arete Technologies Llc

Austin, TX

Turn Your Vision into a Reality

WebsitePhone1 office4 projects11 leadersUpdated Jun 2026

Project: Microelectronics Research Center Cleanroom Buildout & Expansion

Service: MEP EngineeringService: General HVACService: Makeup AirIndustry: CommercialIndustry: EducationType: MEP+18 more

Atlantic Circuit Technologies, Inc.

Atlanta, GA

Atlantic Circuit Technologies, Inc. is an advanced engineering services firm headquartered in Atlanta, Georgia, that supports US Government agencies and private industry across data analytics, digital twin modeling, IoT devices, and systems integration. Its engineers specialize in data visualization, embedded machine learning, and regulatory compliance engineering for government contractors. Atlantic Circuit Technologies also operates the Syclops Platform for AI-driven predictive analytics in PCB manufacturing and counterfeit electronic part detection under SAE AS6171, and provides IP and engineering advisory services to semiconductor companies.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Data Analytics and Advanced Visualization

Service: Data Analytics and Advanced VisualizationService: Digital Twin ModelingService: PCB Manufacturing AnalyticsIndustry: DefenseIndustry: GovernmentType: Defense Engineering+5 more

BLT

Columbia, MD

The FPGA Experts

WebsitePhone2 offices2 credentialsFounded 1989Updated Jun 2026

Service detail: FPGA & SoC Design

Service: FPGA & SoC DesignService: FPGA Design ServicesService: SoC & SoM DesignIndustry: AerospaceIndustry: SpaceType: Electrical Engineering+18 more

Bantam Engineering Inc.

Portland, OR

Bantam Engineering is a Portland, Oregon mechanical engineering and commissioning practice. It delivers HVAC design, plumbing design, and building commissioning for healthcare facilities, schools, government offices, airports, and semiconductor clean rooms. Owner Christine McKinley, PE holds licenses in Oregon, Washington, and California. Known for code fluency and a collaborative approach on construction sites and in permit negotiations, the practice specializes in radiant and dedicated outdoor air systems, clean-room mechanical design, and HVAC work within constrained existing buildings.

Website1 office7 projects1 leadersUpdated Jun 2026

Project: Behavioral Health Resource Center

Service: Mechanical EngineeringService: HVAC DesignService: Radiant HVAC DesignIndustry: HealthcareIndustry: EducationType: MEP+10 more

Bradford Consulting Engineers, Inc.

A Higher Standard of Engineering & Design

WebsiteFounded 1999Updated Jun 2026

Service detail: Mechanical, HVAC, and Plumbing Engineering

Service: Mechanical, HVAC, and Plumbing EngineeringService: HVAC System DesignService: Utility and High Purity PipingIndustry: CommercialIndustry: Data CentersType: MEP+28 more

Brixton Technology LLC

Brixton Technology LLC develops software to auto-generate and streamline the design flow of Digital/Analog/Mixed-Signal IP blocks, focusing on Readout Integrated Circuit (ROIC) and CMOS Imager Sensor (CIS) chip designs. It aims to significantly reduce design time, risk, and cost for custom circuit design IP.

WebsiteUpdated Jun 2026

Service detail: EDA Software Development

Service: EDA Software DevelopmentService: Integrated Circuit IP Block AutomationService: ROIC Design Flow OptimizationIndustry: SemiconductorsIndustry: DefenseType: Automation & Controls+3 more

Butler Aerospace & Defense

Engineering Your Future-readiness

WebsiteUpdated Jun 2026

Service detail: Product Development

Service: Product DevelopmentService: Engineering SupportService: DER SupportIndustry: Automation & ControlsIndustry: AerospaceType: Aerospace Engineering+59 more

CTC Design, Inc.

Santa Clara, CA

Building commissioning and retrocommissioning services

WebsitePhone1 office1 projectsSize Estimate: 1-5 employeesUpdated Jun 2026

Project: Solyndra FAB 2

Service: Building Commissioning (Cx)Service: Comprehensive Commissioning Services For New Facility Systems To Verify Design PerformanceService: Operational ReadinessIndustry: IndustrialIndustry: SemiconductorsType: Mechanical Engineering+4 more

Cambridge Consultants Inc.

Boston, MA

The deep tech powerhouse of Capgemini

Website1 office1 projects1 leaders1 credentials2 publicationsUpdated Jun 2026

Project: LEGO SMART Play Collaboration

Service: Deep Tech Innovation and Product DevelopmentService: Design Engineering ServicesService: Deep Tech StrategyIndustry: TelecommunicationsIndustry: ElectronicsType: Telecom / RF Engineering+24 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

Cold Spring Engineering, LLC

Santa Barbara, CA

Engineering Services, Software, Hardware, Systems

WebsitePhone1 officeFounded 2002Updated Jun 2026

Service detail: Engineering Services

Service: Engineering ServicesService: Software EngineeringService: Mechanical EngineeringIndustry: DefenseIndustry: AerospaceType: Aerospace Engineering+16 more

Columbia Engineering Group

Washougal, WA

Engineering Excellence with Comprehensive Full Service Solutions

WebsitePhone1 office6 projects5 leadersUpdated Jun 2026

Project: Forensic Services Unit Chiller Replacement

Service: Mechanical EngineeringService: HVAC System DesignService: Building AutomationIndustry: CommercialIndustry: RetailType: MEP+70 more

Computer Engineering Service

Glass science, infrared thermography, and high-temperature gas processing oven engineering

Website1 leaders3 credentialsFounded 1992Updated Jun 2026

Service detail: Glass and Ceramic Materials Science

Service: Glass and Ceramic Materials ScienceService: Glass Science and Materials DevelopmentService: Infrared ThermographyIndustry: SemiconductorsIndustry: Medical DevicesType: Automation & Controls+12 more