Company lists · Data refreshed September 2026

Top 25 Contract engineering staffing based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 8,575 companies tracked

RevenueBase identified 8,575 contract engineering staffing headquartered in the United States as of September 2026 and tracks 331,430 professional contacts across them, including 50,997 with verified work emails and 94,858 with mobile numbers. Houston is the largest hub.

This list covers contract engineering staffing headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

8,575Companies

331,430Contacts tracked

50,997Verified emails

94,858Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest contract engineering staffing based in the United States

Ranked by team size

Top 25 of 8,575 contract engineering staffing based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to contract engineering staffing: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Manpower	Indirect evidence	Lancaster, PA, United States	10001+	22,476 contacts →
	Indirect evidence “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Source: RevenueBase Database · checked Sep 1, 2026
2	Tradesmen International	Indirect evidence	Macedonia, OH, United States	10001+	5,034 contacts →
	Indirect evidence “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Source: RevenueBase Database · checked Sep 1, 2026
3	Spherion	Partial evidence	Atlanta, GA, United States	10001+	4,265 contacts →
	Partial evidence “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: RevenueBase Database · checked Sep 1, 2026
4	Select Staffing	Partial evidence	Atlanta, GA, United States	10001+	3,928 contacts →
	Partial evidence “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Source: RevenueBase Database · checked Sep 1, 2026
5	Artech L.L.C	Partial evidence	Fremont, CA, United States	5,001-10,000	3,642 contacts →
	Partial evidence “Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Source: RevenueBase Database · checked Sep 1, 2026
6	Rose International	Partial evidence	Chesterfield, MO, United States	5,001-10,000	2,077 contacts →
	Partial evidence “Rose International is a leading provider of Staffing and Total Talent Solutions to corporations and government agencies, employing thousands of people across the U.S, Canada and…” Source: RevenueBase Database · checked Sep 1, 2026
7	Remedy Intelligent Staffing	Partial evidence	Atlanta, GA, United States	10001+	1,948 contacts →
	Partial evidence “Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…” Source: RevenueBase Database · checked Sep 1, 2026
8	Elite Staffing INC	Indirect evidence	Summit, IL, United States	10001+	1,660 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 2026
9	Resourcemfg	Indirect evidence	Atlanta, GA, United States	5,001-10,000	1,640 contacts →
	Indirect evidence “ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…” Source: RevenueBase Database · checked Sep 1, 2026
10	BHI Energy	Partial evidence	Weymouth, MA, United States	5,001-10,000	1,427 contacts →
	Partial evidence “BHI Energy is an industry-leading provider of specialty services and staffing solutions in support of the daily operations, routine maintenance and capital investment requirements…” Source: RevenueBase Database · checked Sep 1, 2026
11	System ONE	Partial evidence	Indianapolis, IN, United States	5,001-10,000	1,380 contacts →
	Partial evidence “System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…” Source: RevenueBase Database · checked Sep 1, 2026
12	Staff Zone	Partial evidence	West Columbia, SC, United States	10001+	1,004 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 1, 2026
13	Automation Personnel Services, INC	Indirect evidence	Nashville, TN, United States	10001+	623 contacts →
	Indirect evidence “Automation Personnel Services was founded in Birmingham, AL almost 30 years ago and has expanded coast to coast with 40 Branch offices in eleven states.” Source: RevenueBase Database · checked Sep 1, 2026
14	Volt Technical Resources	Indirect evidence	Orange, CA, United States	5,001-10,000	585 contacts →
	Indirect evidence “A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Source: RevenueBase Database · checked Sep 1, 2026
15	Wise Staffing Group	Partial evidence	Tupelo, MS, United States	5,001-10,000	437 contacts →
	Partial evidence “Wise Staffing Group, headquartered in Mississippi, is a full service human resource company specializing in temporary and career staffing with an emphasis on providing excellent…” Source: RevenueBase Database · checked Sep 1, 2026
16	Peopleready Skilled Trades	Indirect evidence	Tacoma, WA, United States	10001+	433 contacts →
	Indirect evidence “Want to be part of an award-winning team that is reimagining the way people connect with work?” Source: RevenueBase Database · checked Sep 1, 2026
17	Qualified Staffing	Partial evidence	Chattanooga, TN, United States	10001+	429 contacts →
	Partial evidence “For decades, Qualified Staffing has lived up to its name.” Source: RevenueBase Database · checked Sep 1, 2026
18	First Team Staffing Services, INC	Indirect evidence	Columbia, MD, United States	10001+	286 contacts →
	Indirect evidence “First Team specializes in the recruitment and placement of professional and temporary workers.” Source: RevenueBase Database · checked Sep 1, 2026
19	Priorityworkforce, INC	Indirect evidence	Tustin, United States	5,001-10,000	216 contacts →
	Indirect evidence “PriorityWorkforce has over 25 years of experience, making us the leader in providing employment solutions to both the public and private sectors in California.” Source: RevenueBase Database · checked Sep 1, 2026
20	Fairway Staffing	Partial evidence	Bell Gardens, CA, United States	5,001-10,000	204 contacts →
	Partial evidence “If you are looking for a staffing service that can provide everything you need, look no further.” Source: RevenueBase Database · checked Sep 1, 2026
21	Atwork Group	Indirect evidence	Knoxville, TN, United States	10001+	202 contacts →
	Indirect evidence “For over 30 years, AtWork has been helping people and businesses grow with care and commitment.” Source: RevenueBase Database · checked Sep 1, 2026
22	WSI	Partial evidence	Sturgis, MI, United States	5,001-10,000	199 contacts →
	Partial evidence “At WSI, we're passionate about delivering innovative staffing solutions that exceed expectations.” Source: RevenueBase Database · checked Sep 1, 2026
23	J & J Staffing Resources	Partial evidence	Cherry Hill, NJ, United States	5,001-10,000	168 contacts →
	Partial evidence “A Premier Staffing Agency - At J&J Staffing Resources our mission is simple - we want to align employers with the best possible candidates at the best possible price.” Source: RevenueBase Database · checked Sep 1, 2026
24	Canadian Executive Search Group USA INC Division Of Arrow Group Of Companies	Partial evidence	Brampton, United States	10001+	152 contacts →
	Partial evidence “CES is a full cycle recruitment agency with a combined staffing experience of over 30 years.” Source: RevenueBase Database · checked Sep 1, 2026
25	Careersusa	Partial evidence	Boca Raton, FL, United States	5,001-10,000	130 contacts →
	Partial evidence “CareersUSA is a national staffing company headquartered in Boca Raton, Florida, offering Fortune 500 businesses a wide range of staffing services including the provision of…” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract engineering staffing. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract engineering staffing.
Partial evidence: Its own public description names part of contract engineering staffing, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract engineering staffing. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 8,575 contract engineering staffing based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 50,997 reachable decision-makers.

Free signup · no credit card

View the full list →

Contract engineering staffing based in the United States at a glance

As of Sep 1, 2026

15.4%Verified-email coverage

28.6%Mobile-number coverage

38.7Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Houston

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

3,510

11-50

2,574

51-200

1,524

201-500

506

501-1,000

215

1,001-5,000

169

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract engineering staffing, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “contract engineering staffing”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract engineering staffing), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract engineering staffing, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 50,997 across the full list. 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 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Contract engineering staffing by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract engineering staffing, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 8,575 contract engineering staffing headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Manpower, headquartered in Lancaster, tops this list with the largest team on record.

Which city has the most contract engineering staffing?

Houston leads with 303 headquartered companies, followed by New York (251) and Atlanta (155).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 50,997 verified decision-maker contacts tracked across these 8,575 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

Ready to reach these companies? Verified emails and direct dials for all 8,575 contract engineering staffing based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Contract engineering staffing by geography

Browse the directory

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 Smart Search, 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.