Find engineering consulting firms by capability and location.

Engineering & Consulting for the Built Environment

A&J Consulting Engineering Services, P.C. is a full-service MEP consulting engineering practice headquartered in Clifton, New Jersey. Founded in 1988 by Jay Agarwal, P.E., A&J delivers mechanical, electrical, and plumbing systems design, pharmaceutical validation and commissioning, construction administration, sustainable design, and high-technology systems consulting. Clients span the pharmaceutical, biotechnology, commercial, educational, governmental, industrial, and religious sectors across the New York-New Jersey region.

Providing Safe Solutions.

Engineering from Concept to Production

Mission-Driven.

AECOM is a trusted global infrastructure firm delivering professional services spanning cities, transportation, buildings, water, new energy, and the environment. Founded in 1990, with predecessor firms dating back over 120 years, AECOM is ranked #1 in general building, transportation, and water by Engineering News-Record (2025), listed at #259 on the Fortune 500, and generated $16.1 billion of revenue in fiscal year 2024. AECOM delivers planning, design, engineering, consulting, and program and construction management services throughout the full project lifecycle.

Aviation architecture, engineering, and prefabricated air traffic control cab fabrication.

Industrial Facility Engineering

Engineering with integrity & purpose.

The Best Team for Project Success

Innovative Construction Solutions

Quality by Design

Transforming complex challenges into strategic technological opportunities

Built on Precision. Trusted on Landmark Projects.

Crafting sustainable solutions that enrich lives

Acceleration Engineering, LLC is an engineering and government contracting services firm with offices in Greenville, South Carolina, and Norton, Massachusetts, whose team draws on experience across the U.S. Navy, Special Forces, and Intelligence community. Its practice covers proposal development, government contractor onboarding, contract and proposal management, quality compliance auditing, and engineering and program support for defense and shipbuilding clients.

Built for Rural and Tribal Broadband

Innovating Solutions for a Safer Tomorrow.

Advantic LLC is a structural design-build firm based in Miamisburg, Ohio, delivering turnkey structural systems that integrate advanced composite materials with in-house fabrication and installation. Advantic specializes in lightweight fiber-reinforced polymer (FRP) and multi-material structural solutions for data center, industrial, edge computing, and AI infrastructure clients, and holds 50-state PE stamping capabilities.

Keeping Construction Projects on Track

Aerospace Engineering Service Provider

Affordable MANTECH Solutions, LLC, is a father-and-son engineering services consultancy with over 40 years of varied and progressive experience in both large and small businesses across disciplines including cost estimation, affordability, program management, quality assurance, procurement, and systems engineering.

Construction management and inspection services for infrastructure projects

Founded in 1980, Aliquot Associates, Inc. is a multi-disciplinary engineering and surveying firm serving public and private clients across the San Francisco Bay Area. The practice offers civil engineering, traffic engineering, and land surveying services from offices in Oakland and Walnut Creek, California. Aliquot brings decades of expertise across diverse project types including public roadways and highways, transit facilities, residential subdivisions, commercial and mixed-use sites, water and sewer systems, stormwater management, and park improvements. With extensive agency-side experience and strong local knowledge across multiple Bay Area jurisdictions, the team provides responsive, customized service from initial planning and feasibility studies through design, permitting, construction, and inspection. Every project is managed directly by a principal, enabling quick decision-making and close coordination with property owners, architects, contractors, and agency representatives.