Company lists · Data refreshed October 2026

Top 25 Direct hire engineering firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 6,892 companies tracked

RevenueBase identified 6,892 company matches for direct hire engineering firms associated with the United States as of October 2026 and tracks 182,719 professional contacts across them, including 55,001 with verified work emails. Houston is the largest hub.

This list covers company matches for direct hire engineering 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 October 11, 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 Oct 11, 2026 How this list was built

6,892Companies

182,719Contacts tracked

55,001Verified emails

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The 25 largest direct hire engineering firms based in the United States

Ranked by team size

Top 25 of 6,892 company matches for direct hire engineering firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 11, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Oct 11, 2026	10001+	5,046 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 · Oct 11, 2026 · View company records in RevenueBase
3	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Oct 11, 2026	10001+	4,647 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 · Oct 11, 2026 · View company records in RevenueBase
4	The Haskell Company	Exact match	Jacksonville, FL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,390 contacts →
	Exact match “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5	Airswift	Exact match	Houston, TX, United StatesHQ recorded Oct 11, 2026	501-1,000	2,219 contacts →
	Exact match “We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6	Colliers Engineering & Design	Exact match	Holmdel, NJ, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,103 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 · Oct 11, 2026 · View company records in RevenueBase
7	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,778 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 · Oct 11, 2026 · View company records in RevenueBase
8	Resourcemfg	Exact match	Atlanta, GA, United StatesHQ recorded Oct 11, 2026	5,001-10,000	1,702 contacts →
	Exact match “ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Oct 11, 2026	501-1,000	1,679 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,404 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11	GPI Greenman-Pedersen, INC	Exact match	Melville, NY, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,379 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 · Oct 11, 2026 · View company records in RevenueBase
12	Construction Labor Contractors	Exact match	Round Rock, TX, United StatesHQ recorded Oct 11, 2026	501-1,000	1,257 contacts →
	Exact match “Let us make construction staffing work for you.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	Outsource	Exact match	El Segundo, CA, United StatesHQ recorded Oct 11, 2026	n/a	1,245 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 · Oct 11, 2026 · View company records in RevenueBase
14	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Oct 11, 2026	201-500	1,239 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 · Oct 11, 2026 · View company records in RevenueBase
15	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,201 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 · Oct 11, 2026 · View company records in RevenueBase
16	QPS Employment Group	Exact match	Brookfield, WI, United StatesHQ recorded Oct 11, 2026	201-500	1,096 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 · Oct 11, 2026 · View company records in RevenueBase
17	Staff Zone	Exact match	Roswell, GA, United StatesHQ recorded Oct 11, 2026	10001+	1,020 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 · Oct 11, 2026 · View company records in RevenueBase
18	Remx The Workforce Experts	Exact match	Atlanta, GA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	972 contacts →
	Exact match “RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19	Coffman Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 11, 2026	501-1,000	889 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Eastridge Workforce Solutions	Exact match	San Diego, CA, United StatesHQ recorded Oct 11, 2026	n/a	820 contacts →
	Exact match “Eastridge Workforce Solutions is a trusted staffing partner helping businesses build stronger, more productive teams across industrial and professional sectors.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	Wade Trim	Exact match	Detroit, MI, United StatesHQ recorded Oct 11, 2026	501-1,000	783 contacts →
	Exact match “At Wade Trim, we are committed to maximizing the value of your infrastructure investment.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	Genesis10	Exact match	New York, NY, United StatesHQ recorded Oct 11, 2026	1,001-5,000	779 contacts →
	Exact match “Genesis10 connects companies and professionals through every stage of the hiring journey.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	Cynet Systems	Exact match	Sterling, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	756 contacts →
	Exact match “Headquartered in Washington DC Metro Area, Cynet Systems is a top talent supplier for companies across North America.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	PTS Advance	Exact match	Tustin, CA, United StatesHQ recorded Oct 11, 2026	501-1,000	745 contacts →
	Exact match “PTS Advance teams up with thousands of candidates, clients, and partners to advance workforce utilization in the Oil, Gas & Chemicals, Power & Renewables, Advanced Manufacturing…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Automation Personnel Services, INC	Exact match	Birmingham, AL, United StatesHQ recorded Oct 11, 2026	10001+	670 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 11, 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 “direct hire engineering 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 6,892 direct hire engineering firms based in the United States

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Direct hire engineering firms based in the United States at a glance

As of Oct 11, 2026

30.1%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Houston

Oct 11, 2026Page data refreshed

Companies by employee count

1-10

3,277

11-50

2,245

51-200

919

201-500

259

501-1,000

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 6,892 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 “direct hire engineering 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 55,001 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 October 11, 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.

Direct hire engineering 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 “direct hire engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many direct hire engineering firms are there based in the United States?

RevenueBase identified 6,892 company matches for direct hire engineering firms associated with the United States as of October 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?

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

Which city has the most direct hire engineering firms?

Houston leads with 225 company records, followed by New York (151) and Dallas (101).

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 55,001 professional contacts with verified work emails tracked across these 6,892 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 October 11, 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.