These US-based engineering services companies offer a range of specialized solutions across diverse sectors. They include large established firms such as Black & Veatch, a global leader in critical human infrastructure, and Kimley-Horn, which provides comprehensive planning and design consulting. Other notable firms are NV5, offering technology and consulting for sustainable infrastructure, and POWER Engineers, providing integrated solutions for energy and food and beverage markets. Many of these firms are employee-owned, indicating a common business model in the sector.
The companies listed primarily focus on infrastructure, energy, environmental solutions, and government services. For instance, FieldCore specializes in power, wind, and electrification solutions, while Dewberry offers professional services to public and private sector clients. A significant number of these companies were founded in the mid-to-late 20th century, suggesting a period of growth and establishment for engineering services in the United States.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Black & Veatchbv.com
An employee-owned global leader in building critical human infrastructure in Energy, Water, Telecommunications, and Government Services since 1915 |
11,691 | |||
| 2 |
Kimley-Hornkimley-horn.com
providing comprehensive planning and design consulting services across multiple disciplines with a client-focused approach and recognized workplace quality |
10,392 | |||
| 3 |
FieldCorefieldcore.com
Global energy company specializing in power, wind, and electrification solutions, supported by advanced research, consulting, and financial services for a lower carbon future |
4,952 | |||
| 4 |
Cocacola Nowyahoo.com
Lorem Ipsum provides standard dummy text for printing and typesetting, surviving for centuries and adapting to electronic and digital publishing |
3,968 | |||
| 5 | 3,633 | ||||
| 6 |
POWER Engineerswsp.com
Global engineering firm providing integrated solutions for energy, food and beverage, facilities, communications, environmental, and federal markets with multidiscipline services |
3,392 | |||
| 7 |
ILF Consulting Engineersilf.com
Engineering and consulting firm providing technical expertise for industrial and infrastructure projects across energy, water, transportation, and sustainable industries worldwide. |
3,272 | |||
| 8 |
Dewberrydewberry.com
A market-leading firm providing professional services to public and private sector clients, solving complex challenges, and transforming communities through innovation and expertise |
2,914 | |||
| 9 | 2,900 | ||||
| 10 |
Scientific Research Corporationscires.com
An engineering company founded in 1988, providing innovative solutions to US Government, private industry, and international markets with focus on information, communications, intelligence, and more |
2,534 | |||
| 11 |
UESteamues.com
A nationwide provider of engineering, environmental, testing, and inspection services, specializing in sustainable infrastructure solutions for public and private clients across various industries |
2,428 | |||
| 12 |
Salas O'Briensalasobrien.com
Employee-owned engineering firm focused on advancing the human experience through the built environment Top-ranked, with a strong emphasis on impact and sustainability |
2,295 | |||
| 13 |
Olssonolsson.com
An employee-owned engineering and design firm focused on improving communities through sustainable, connected, and efficient projects, driven by inspired people and purposeful designs |
2,270 | |||
| 14 |
Bowman Consultingbowman.com
A national engineering services provider delivering infrastructure solutions to customers in various regulated end markets, with expertise in planning, engineering, and environmental consulting |
2,221 | |||
| 15 |
Core States Groupcore-states.com
A collaborative team offering architecture, interior design, engineering, program management, and construction solutions nationwide, focused on facilitating a remarkable customer experience |
2,134 | |||
| 16 |
Pinnaclepinnaclereliability.com
A company based in Pasadena, focused on helping industrial facilities in oil and gas, chemical, mining, and water industries optimize data for improved performance |
1,701 | |||
| 17 |
Audubon Companiesauduboncompanies.com
A leading provider of EPC, consulting, fabrication, and technical services for energy, chemicals, power, infrastructure, and industrial markets with a focus on sustainability |
1,680 | |||
| 18 |
BW Design Groupbwdesigngroup.com
This company is a fully integrated engineering, architecture, construction, and consulting firm serving leading companies with customized solutions |
1,676 | |||
| 19 |
Qualusqualuscorp.com
Innovative power services firm specializing in grid modernization, resiliency, sustainability, and software solutions for utilities, commercial, industrial, and government clients |
1,668 | |||
| 20 |
Westwood Professional Serviceswestwoodps.com
A dedicated team with over 50 years of experience creating a better world through energy grid transformation, resilient infrastructure design, and community development |
1,660 | |||
| 21 |
SSOE Groupssoe.com
Internationally recognized architecture and engineering firm specializing in providing high-quality project solutions for various industries with global reach |
1,634 | |||
| 22 |
Walter P Moorewalterpmoore.com
A team of engineers and innovators designing high-performance structures and infrastructure globally, providing cost-efficient solutions that shape communities worldwide |
1,340 | |||
| 23 |
Pennonipennoni.com
The firm partners with clients to deliver innovative, sustainable, and resilient engineering solutions, fostering long-term relationships focused on community impact |
1,317 | |||
| 24 |
Pyrotekpyrotek.com
Global engineering leader providing performance-improving technical solutions for industries like aluminium, glass, and automotive with a focus on innovation and customer satisfaction |
1,314 | |||
| 25 |
Holtec Internationalholtecinternational.com
Global leader in designing and manufacturing custom energy equipment for nuclear, solar, geothermal, and fossil power generation, with a focus on integrity and innovation |
1,313 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
Moldtek Technologies Limitedmoldtekengineering.com
Moldtek Technologies offers engineering design support globally across various industries, shaping solutions for clients with top-tier expertise and delivery centers in India |
1,296 | |||
| 27 | 1,198 | ||||
| 28 |
Willdanwilldan.com
A consulting firm offering technical services in energy efficiency, engineering, public finance, and more to utilities, public agencies, and private industry nationwide |
1,169 | |||
| 29 |
Barnhart Crane & Riggingbarnhartcrane.com
Leading provider of crane rentals, heavy haul, and engineered rigging solutions across North America, specializing in complex industrial lifting and transportation projects. |
1,155 | |||
| 30 |
Prime Controlsprime-controls.com
Industrial Automation company offering sole source solutions for system integration, I & C construction, project design, maintenance, and factory support services Customer-focused with commitment to excellence |
1,095 | |||
| 31 |
Pond & Companypondco.com
A full-service consulting firm offering engineering, architecture, planning, and construction management solutions to public and private clients globally since 1965 |
1,003 | |||
| 32 |
Dalkia UKdalkia.co.uk
Delivering technical solutions for a sustainable future, specializing in energy, engineering, facilities management, and specialist services for private and public sector clients |
990 | |||
| 33 |
Arcfieldarcfield.com
Provider of systems engineering and integration services to US Intelligence Community and Department of Defense, with expertise in advanced engineering, IT, and analysis |
949 | |||
| 34 |
The Foth Companiesfoth.com
A multidisciplinary firm providing innovative solutions in science, engineering, and technology, focused on client-centered service, collaboration, and delivering results |
895 | |||
| 35 |
Mesa Associates, Incmesainc.com
Full service engineering firm specializing in serving electric utility, industrial, and government clients with expertise in power delivery and various engineering disciplines since 1988 |
882 | |||
| 36 |
Bechtel Plant Machinery, Inc. (BPMI)bpmionline.com
Provides design, manufacturing, and procurement management for high-quality nuclear power plant components in submarines and aircraft carriers Also offers IT solutions |
841 | |||
| 37 |
ENSCO, Inc.ensco.com
Provides leading-edge engineering, science, and advanced technology solutions to governments and private industries in aerospace, national security, and surface transportation sectors. |
745 | |||
| 38 |
DLB Associatesdlbassociates.com
DLB Associates are MEP & Technology consulting engineers, offering personalized, adaptive solutions through imagination, expertise, agility, and practicality for clients |
722 | |||
| 39 |
Fike Corporationfike.com
Designs and manufactures rupture discs, explosion protection, fire alarm, and suppression systems for global businesses seeking disaster prevention and safety assurance. |
692 | |||
| 40 |
Algoworksalgoworks.com
An IT powerhouse since 2006, leading digital transformations with expertise in Salesforce, Mobility, DevOps, and App Development for global businesses |
662 | |||
| 41 |
Wunderlich-Malec Engineering, Inc.wmeng.com
An established engineering company specializing in solutions for industrial process plants, offering expertise, experience, and resources for critical control systems |
661 | |||
| 42 |
RRC Companiesrrccompanies.com
Top-tier engineering firm specializing in utility-scale renewable energy projects, offering comprehensive engineering services and dedicated to creating solutions that exceed expectations |
617 | |||
| 43 |
Enventure Engineeringenventure.com
A leading Engineering, Supply Chain, and Compliance solutions provider with expertise in engineering services, master data management, asset management, and compliance solutions |
603 | |||
| 44 |
Saber Powersaberpower.com
Engineering-led professional services company specializing in medium and high voltage electrical infrastructure Offering turnkey EPC, construction, maintenance, emergency response, training, and engineering services globally |
597 | |||
| 45 |
Cobb, Fendley & Associates, Inc.cobbfendley.com
A Texas-based firm offering engineering, surveying, and infrastructure solutions for public and private sector clients, specializing in various professional services |
577 | |||
| 46 |
Middough Inc.middough.com
A top US firm providing engineering, architectural, and management services worldwide for a range of industries since 1950 |
575 | |||
| 47 |
Eximietas Designeximietas.design
Leading technology consulting firm specializing in chip design, firmware development, embedded software, cloud computing, cyber security, and AI/ML solutions |
558 | |||
| 48 |
Sterling Engineeringsterling-engineering.com
An award-winning company providing engineering project services and technical recruitment across industries, offering flexible solutions to clients since 1969 |
556 | |||
| 49 |
Vanderweil Engineersvanderweil.com
Engineering firm specializing in mechanical, electrical, plumbing, and sustainable design solutions for a wide range of projects, prioritizing client service and environmental impact |
553 | |||
| 50 |
Orbital Engineering, Inc.orbitalengr.com
Orbital Engineering provides full-service engineering, risk mitigation, and project delivery solutions tailored to meet customer needs across various industries |
553 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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