Company lists · Data refreshed November 2026

Top 25 Engineering employment services based in the United States

Name: Engineering employment services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 14,651 companies tracked

RevenueBase identified 14,651 company matches for engineering employment services associated with the United States as of November 2026 and tracks 381,033 professional contacts across them, including 102,557 with verified work emails. Houston is the largest hub.

This list covers company matches for engineering employment services 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 November 6, 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 Nov 6, 2026 How this list was built

14,651Companies

381,033Contacts tracked

102,557Verified emails

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The 25 largest engineering employment services based in the United States

Ranked by team size

Top 25 of 14,651 company matches for engineering employment services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Nov 6, 2026	10001+	28,157 contacts →
	Exact match “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Terracon	Exact match	Olathe, NE, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,576 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Appleone Employment Services	Exact match	Glendale, AZ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	5,438 contacts →
	Exact match “AppleOne Employment Services is a full-service employment company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	10001+	4,751 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 · Nov 6, 2026 · View company records in RevenueBase
5	Elwood Staffing Services, INC	Exact match	Columbus, ND, United StatesHQ recorded Nov 6, 2026	n/a	3,786 contacts →
	Exact match “Whether you're looking to find your next great employee, make your next career move, or help a friend find a new job, you can trust that Elwood puts its passion and expertise into…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Beacon Hill	Exact match	Boston, OH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,512 contacts →
	Exact match “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,363 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Remedy Intelligent Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	10001+	2,182 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,116 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Yates Construction	Exact match	Philadelphia, MS, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,902 contacts →
	Exact match “Yates Construction is part of The Yates Companies, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,827 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 · Nov 6, 2026 · View company records in RevenueBase
12	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Nov 6, 2026	501-1,000	1,723 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,675 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Kpff Consulting Engineers	Exact match	Seattle, ID, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,631 contacts →
	Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	System ONE	Exact match	Pittsburgh, PA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,625 contacts →
	Exact match “System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Infotree Global Solutions	Exact match	Plymouth, MI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,594 contacts →
	Exact match “Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Brooksource	Exact match	Indianapolis, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,534 contacts →
	Exact match “At Brooksource, relationships are at the center of everything we do.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	SELF	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	n/a	1,434 contacts →
	Exact match “We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Nov 6, 2026	201-500	1,274 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 · Nov 6, 2026 · View company records in RevenueBase
20	Barr Engineering CO	Exact match	Minneapolis, NV, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,146 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	QPS Employment Group	Exact match	Brookfield, WI, United StatesHQ recorded Nov 6, 2026	201-500	1,116 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 · Nov 6, 2026 · View company records in RevenueBase
22	JOBOT	Exact match	Newport Beach, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,113 contacts →
	Exact match “Jobot connects good people with good jobs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	ARI	Exact match	East Peoria, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,030 contacts →
	Exact match “ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	SSI People	Exact match	Cranberry Township, PA, United StatesHQ recorded Nov 6, 2026	n/a	1,022 contacts →
	Exact match “SSi People, located in Cranberry Township, PA, is an organization with over 25 years of staffing industry experience across various labor verticals in the United States, serving…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Self Opportunity, INC	Exact match	Lewisville, TX, United StatesHQ recorded Nov 6, 2026	n/a	988 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 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 “engineering employment services”. 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 14,651 engineering employment services based in the United States

See the full list, filter by size, metro and specialty, and access 102,557 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering employment services based in the United States at a glance

As of Nov 6, 2026

26.9%Verified-email coverage

26.0Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

7,364

11-50

4,523

51-200

1,873

201-500

501

501-1,000

170

1,001-5,000

124

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 14,651 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 “engineering employment services” 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 102,557 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 November 6, 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.

Engineering employment services 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 “engineering employment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many engineering employment services are there based in the United States?

RevenueBase identified 14,651 company matches for engineering employment services associated with the United States as of November 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?

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

Which city has the most engineering employment services?

Houston leads with 471 company records, followed by New York (439) and Austin (246).

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 102,557 professional contacts with verified work emails tracked across these 14,651 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 November 6, 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.