Public engineering firm directory

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Corrosion Probe, Inc.

Centerbrook, CT

Preserving Infrastructure, One Solution at a Time.

WebsitePhone13 offices6 credentialsUpdated Jun 2026

Service detail: Materials & Corrosion

Service: Materials & CorrosionService: Material SelectionService: Damage Mechanism IdentificationIndustry: Pulp & PaperIndustry: Water SupplyType: Materials Engineering+30 more

Crane Associates, P.C.

Somerville, NJ

Architectural, Electrical & Mechanical Design

WebsitePhone1 office16 projectsFounded 1962Updated Jun 2026

Project: Montclair State University

Service: Architectural EngineeringService: New ConstructionService: Commercial ConstructionIndustry: GovernmentIndustry: EducationType: Architecture & Engineering+49 more

D&B Engineers and Architects, DPC

Woodbury, NY

A Legacy Engineered From A Vision

WebsitePhone7 offices8 projects20 leadersFounded 1965Size Estimate: 100-499 employees

Project: Atlantic County Utilities Authority Project

Service: ArchitectureService: Sustainable DesignService: BIM & Technology-Driven DesignIndustry: CommercialIndustry: EducationType: Architecture & Engineering+37 more

EG&R Engineering PC

Somerset, NJ

Powering Tomorrow's Infrastructure

WebsitePhone1 officeUpdated Jun 2026

Service detail: Engineering

Service: EngineeringService: Protection and Control UpgradesService: Substation UpgradesIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+14 more

GreenTech Energy Services Inc

Maple Shade, NJ

Add Expertise, Dependability and Professionalism to Your Team with Our Superior Energy Experts

WebsitePhone1 office8 leaders5 credentialsFounded 1994Updated Jun 2026

Service detail: Auditing and Survey Services

Service: Auditing and Survey ServicesService: Lighting SolutionsService: Lighting RetrofitsIndustry: CommercialIndustry: RetailType: MEP+20 more

INF Associates LLC

New York, NY

Turnkey energy solutions for the decarbonization of buildings and transportation

WebsitePhone4 offices3 credentialsUpdated Jun 2026

Service detail: Engineering Services

Service: Engineering ServicesService: On-Site Energy ManagementService: Energy Studies and AuditsIndustry: CommercialIndustry: IndustrialType: Electrical Engineering+27 more

Keystone Engineering Group, Inc.

Frazer, PA

Forward Thinking for a Sustainable Future

WebsitePhone5 offices8 leadersFounded 1997Size Estimate: 80 employeesUpdated Jun 2026

Service detail: Automation & Control Systems

Service: Automation & Control SystemsService: Control Systems & SCADA DesignService: Complete Systems IntegrationIndustry: Water SupplyIndustry: WastewaterType: Electrical Engineering+20 more

LB Electric Co., LLC

Cedar Grove, NJ

The Best Electrical Contractor In New York & New Jersey

WebsitePhone3 offices10 projects1 leaders21 credentialsFounded 1999

Project: Culver Line Project - Contract S-4009

Service: Electrical InstallationService: Power System InstallationService: Traction Power SystemsIndustry: TransitIndustry: TransportationType: Electrical Engineering+31 more

Mott Watkins Associates, LLC

Egg Harbor Township, NJ

Mott Watkins Associates is a civil engineering and planning firm in Egg Harbor Township, New Jersey, specializing in municipal engineering for communities throughout the Cape May and Atlantic County areas. With more than 30 combined years of professional experience, Mott Watkins provides engineering, planning, surveying, and construction management for roadway, water, wastewater, stormwater, coastal protection, and solid waste projects, and offers post-disaster damage assessment and FEMA reimbursement support for municipal clients.

WebsitePhone1 office4 leadersUpdated Jun 2026

Service detail: Municipal Engineering

Service: Municipal EngineeringService: Roadway maintenanceService: Water and wastewater infrastructureIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+38 more

Robert Derector Associates

New York, NY

Robert Derector Associates (RDA) has served as a full-service engineering partner since 1980, specializing in MEP, IT, audiovisual, and security design; energy and sustainability consulting; and commissioning for corporate offices, amenity spaces, mission-critical facilities, and building infrastructure. With over 20 million square feet of office space designed annually, RDA partners with Fortune 500 organizations in the legal, financial, professional services, technology, media, and educational sectors to deliver innovative, functional, and sustainable environments. Recognized as the premier commercial interiors engineering firm in the New York City Metro area, RDA serves clients locally and nationally through offices in New York, New Jersey, and South Florida.

WebsitePhone3 offices13 leadersFounded 1980Updated Jun 2026

Service detail: MEP Engineering

Service: MEP EngineeringService: Heating, Ventilating, and Air ConditioningService: ElectricalIndustry: CommercialIndustry: Financial ServicesType: MEP+26 more

SI Engineering, P.C.

New York, NY

High-Quality Engineering Services for the New York Metropolitan Area and New Jersey

WebsitePhone4 offices10 projects9 leaders7 credentialsFounded 2003

Project: Project Management Services for the LIRR Mainline Third Track Expansion

Service: Construction Inspection / Resident Engineering InspectionService: Daily Inspection ServicesService: Claim and Schedule ManagementIndustry: RailIndustry: TransitType: Civil Engineering+48 more

Simulation Systems Technologies, Inc.

Voorhees, NJ

Deliver Solutions for Complex Programs On Time and Within Budget

WebsitePhone2 offices2 credentialsFounded 1987Updated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Requirements development and traceabilityService: Systems architecture and designIndustry: DefenseIndustry: FederalType: Defense Engineering+41 more

Specialty Systems, Inc.

Toms River, NJ

Delivering Mission Critical Systems, Services, and Information Security

WebsitePhone1 office3 projects1 leaders4 credentialsUpdated Jun 2026

Project: Capacity Selector Valve Calculator

Service: Software EngineeringService: Requirements and DesignService: Test Planning and ExecutionIndustry: DefenseIndustry: GovernmentType: Software Engineering+24 more

Thermo Systems LLC

East Windsor, NJ

A Premier Systems Integration Partner

WebsitePhone31 offices8 projects2 credentialsFounded 1998Updated Jun 2026

Project: Catalent Steam Humidifier Addition

Service: Automation and Control SystemsService: Controls for Energy and Industrial UtilitiesService: Building Automation Systems (BAS)Industry: Data CentersIndustry: Mission Critical FacilitiesType: Automation & Controls+31 more

Tri-State Light & Energy, Inc.

New Brunswick, NJ

We Know the Science of Energy

WebsitePhone1 office2 credentialsUpdated Jun 2026

Service detail: Lighting Engineering

Service: Lighting EngineeringService: Lighting Assessment & AnalysisService: Lighting Design & SpecificationIndustry: CommercialIndustry: EducationType: Design-Build+17 more