Company lists · Data refreshed September 2026

Top 25 Petroleum engineering staffing agencies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 3,766 companies tracked

RevenueBase identified 3,766 company matches for petroleum engineering staffing agencies associated with the United States as of September 2026 and tracks 103,597 professional contacts across them, including 16,930 with verified work emails. Houston is the largest hub.

This list covers company matches for petroleum engineering staffing agencies 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 29, 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 29, 2026 How this list was built

3,766Companies

103,597Contacts tracked

16,930Verified emails

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The 25 largest petroleum engineering staffing agencies based in the United States

Ranked by team size

Top 25 of 3,766 company matches for petroleum engineering staffing agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
2	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
3	Beacon Hill	Exact match	Boston, MA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	3,238 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 · Sep 29, 2026 · View company records in RevenueBase
4	KEY Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,755 contacts →
	Exact match “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Addison Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,840 contacts →
	Exact match “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Sep 29, 2026	501-1,000	1,599 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	SELF	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	n/a	1,431 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 · Sep 29, 2026 · View company records in RevenueBase
8	BHI Energy	Exact match	Weymouth, MA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	1,427 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
10	247hire	Exact match	Oak Brook, IL, United StatesHQ recorded Sep 29, 2026	201-500	1,059 contacts →
	Exact match “At 247Hire, our mission is simple: to empower yours.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Self Opportunity, INC	Exact match	Lewisville, TX, United StatesHQ recorded Sep 29, 2026	n/a	969 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	MAX International	Exact match	Salt Lake City, UT, United StatesHQ recorded Sep 29, 2026	501-1,000	960 contacts →
	Exact match “Max International is a trusted US staffing and recruitment firm committed to connecting top-tier talent with leading organizations across the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Eastridge Workforce Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	n/a	803 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 · Sep 29, 2026 · View company records in RevenueBase
14	Pioneer Energy Services	Exact match	San Antonio, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	770 contacts →
	Exact match “Pioneer Energy Services is now Patterson-UTI” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Primary Services	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	n/a	766 contacts →
	Exact match “Primary Services provides job opportunities for Accounting/Financial, Information Technology, HR, Recruiting, Marketing, Procurement, Call Center and Administrative professionals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Cynet Systems	Exact match	Sterling, VA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	732 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 · Sep 29, 2026 · View company records in RevenueBase
17	PTS Advance	Exact match	Tustin, CA, United StatesHQ recorded Sep 29, 2026	501-1,000	706 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 · Sep 29, 2026 · View company records in RevenueBase
18	Volt Technical Resources	Exact match	Orange, CA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	584 contacts →
	Exact match “A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Consultec International INC	Exact match	Miami, FL, United StatesHQ recorded Sep 29, 2026	501-1,000	580 contacts →
	Exact match “Somos una empresa multinacional líder en servicios de Consultoría de Oil & Gas, IT, Ingeniería, Recursos Humanos, Head Hunter y Proyectos” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Island Operating Company	Exact match	Scott, LA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	570 contacts →
	Exact match “Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	STS Technical Services	Exact match	Brookfield, WI, United StatesHQ recorded Sep 29, 2026	51-200	543 contacts →
	Exact match “STS Technical Services is a Top 100 Staffing Firm that’s partnered with some of the largest names in the aerospace, manufacturing, defense and industrial industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Cybercoders	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	201-500	531 contacts →
	Exact match “CyberCoders, a division of ASGN Incorporated, is a leading permanent placement recruiting firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Mining And Minerals Processing Jobs	Exact match	Clayton, NC, United StatesHQ recorded Sep 29, 2026	n/a	529 contacts →
	Exact match “Connecting industry professionals with the most successful companies in the North American mining industry is what we do best at Resource Erectors.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Peoplelink Staffing Solutions	Exact match	South Bend, IN, United StatesHQ recorded Sep 29, 2026	201-500	527 contacts →
	Exact match “Experience the Peoplelink difference.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	EASI	Exact match	Hanover, MD, United StatesHQ recorded Sep 29, 2026	1,001-5,000	526 contacts →
	Exact match “EASi is now Actalent.” Recorded in the RevenueBase company graph · Sep 29, 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 “petroleum engineering staffing agencies”. 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 3,766 petroleum engineering staffing agencies based in the United States

See the full list, filter by size, metro and specialty, and access 16,930 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Petroleum engineering staffing agencies based in the United States at a glance

As of Sep 29, 2026

16.3%Verified-email coverage

27.5Average contacts per company

11-50Median size (employees)

8.3%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,743

11-50

1,090

51-200

587

201-500

202

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 3,766 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 “petroleum engineering staffing agencies” 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 16,930 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 29, 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.

Petroleum engineering staffing agencies 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 “petroleum engineering staffing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 3,766 company matches for petroleum engineering staffing agencies 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?

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

Which city has the most petroleum engineering staffing agencies?

Houston leads with 314 company records, followed by New York (92) and Denver (67).

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 16,930 professional contacts with verified work emails tracked across these 3,766 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 29, 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.