Company lists · Data refreshed September 2026

Top 25 Civil engineering staffing firms based in the United States

Name: Civil engineering staffing firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 8,924 companies tracked

RevenueBase identified 8,924 company matches for civil engineering staffing firms associated with the United States as of September 2026 and tracks 263,577 professional contacts across them, including 94,066 with verified work emails. Houston is the largest hub.

This list covers company matches for civil engineering staffing firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

8,924Companies

263,577Contacts tracked

94,066Verified emails

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The 25 largest civil engineering staffing firms based in the United States

Ranked by team size

Top 25 of 8,924 company matches for civil engineering staffing firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	7,527 contacts →
	Exact match “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Sep 27, 2026	5,001-10,000	6,113 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Sep 27, 2026	10001+	4,999 contacts →
	Exact match “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	10001+	4,263 contacts →
	Exact match “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,210 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Colliers Engineering & Design	Exact match	Holmdel, NJ, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,049 contacts →
	Exact match “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	JMT	Exact match	Serving Clients Across The Us, MD, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,688 contacts →
	Exact match “Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,666 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,604 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Sep 27, 2026	501-1,000	1,599 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	UES	Exact match	Orlando, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,595 contacts →
	Exact match “UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Garver	Exact match	North Little Rock, AR, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,499 contacts →
	Exact match “Founded in 1919, Garver is an employee-owned engineering, planning, and environmental services firm focused on aviation, transportation, buildings, federal, water and wastewater…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	GPI Greenman-Pedersen, INC	Exact match	Melville, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,354 contacts →
	Exact match “With a staff of over 1,800 professionals, Greenman-Pedersen, Inc.(GPI) is a leading engineering consulting firm that specializes in the innovative design and construction of…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,298 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Coworx Staffing Services	Exact match	Morristown, NJ, United StatesHQ recorded Sep 27, 2026	201-500	1,286 contacts →
	Exact match “CoWorx Staffing Services is one of the largest staffing firms in the U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Construction Labor Contractors	Exact match	Round Rock, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	1,234 contacts →
	Exact match “Let us make construction staffing work for you.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Outsource	Exact match	El Segundo, CA, United StatesHQ recorded Sep 27, 2026	n/a	1,230 contacts →
	Exact match “Outsource is the largest staffing firm in the nation specializing in the placement of low voltage and electrical talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,199 contacts →
	Exact match “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Sep 27, 2026	201-500	1,187 contacts →
	Exact match “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Bge, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,112 contacts →
	Exact match “Ranked No.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	David Evans And Associates, INC	Exact match	Portland, OR, United StatesHQ recorded Sep 27, 2026	501-1,000	1,031 contacts →
	Exact match “Since its founding in 1976 in Portland, Oregon, DEA has become a recognized leader for progressive and sustainable design and management solutions for complex transportation, land…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	QPS Employment Group	Exact match	Brookfield, WI, United StatesHQ recorded Sep 27, 2026	201-500	1,019 contacts →
	Exact match “Founded in 1985, QPS Employment Group has grown from a two-person operation to one of the nation's leading staffing and recruiting firms, with more than 300 internal employees…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Staff Zone	Exact match	Roswell, GA, United StatesHQ recorded Sep 27, 2026	10001+	1,011 contacts →
	Exact match “Staff Zone is a Best-in-Class® construction staffing agency specializing in meeting the daily workforce needs of the construction, light industrial, and special events industries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Pond & Company	Exact match	Peachtree Corners, GA, United StatesHQ recorded Sep 27, 2026	501-1,000	985 contacts →
	Exact match “Pond, an ENERCON company, is a full-service consulting firm that has provided integrated engineering, architecture, planning, and construction management solutions to public and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “civil engineering staffing firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 8,924 civil engineering staffing firms based in the United States

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Civil engineering staffing firms based in the United States at a glance

As of Sep 27, 2026

35.7%Verified-email coverage

29.5Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · Houston

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,956

11-50

3,127

51-200

1,272

201-500

320

501-1,000

118

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 8,924 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “civil engineering staffing firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 94,066 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Civil engineering staffing firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “civil engineering staffing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many civil engineering staffing firms are there based in the United States?

RevenueBase identified 8,924 company matches for civil engineering staffing firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CDM Smith tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most civil engineering staffing firms?

Houston leads with 257 company records, followed by New York (178) and Dallas (108).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 94,066 professional contacts with verified work emails tracked across these 8,924 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.