Company lists · Data refreshed November 2026

Top 25 Security clearance staffing firms worldwide

RevenueBase identified 1,417 company matches for security clearance staffing firms worldwide as of November 2026 and tracks 21,977 professional contacts across them, including 2,842 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for security clearance staffing firms worldwide, 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 5, 2026. Country and city lists for security clearance staffing firms follow the table.

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 5, 2026 How this list was built
1,417Companies
21,977Contacts tracked
2,842Verified emails
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The 25 largest security clearance staffing firms worldwide

Ranked by team size
Top 25 of 1,417 company matches for security clearance staffing firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHerndon, VA, United StatesHQ recorded Nov 5, 20261,001-5,000696 contacts →

Exact match

“OMNIPLEX World Services Corporation is a leader and innovator in delivering professional background investigations, intelligence support, and physical security services to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchMillersville, MD, United StatesHQ recorded Nov 5, 2026501-1,000505 contacts →

Exact match

“A premier provider of staffing solutions, Tech USA is in the top 1% of the Recruiting Industry.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchCentennial, CO, United StatesHQ recorded Nov 5, 202651-200498 contacts →

Exact match

“ClearanceJobs.com the largest security-cleared career network, specializes in defense jobs for professionals with security clearances.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchWestchester, IL, United StatesHQ recorded Nov 5, 202651-200447 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchNewport News, VA, United StatesHQ recorded Nov 5, 2026201-500359 contacts →

Exact match

“CTR Group provides staffing and recruiting services across the United States.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchSterling, VA, United StatesHQ recorded Nov 5, 2026201-500265 contacts →

Exact match

“From defense to civilian agencies, we provide staffing solutions that meet the demands of federal, local and state agencies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchBradenton, CA, United StatesHQ recorded Nov 5, 202651-200220 contacts →

Exact match

“TAG PGS, Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchRockledge, FL, United StatesHQ recorded Nov 5, 20261,001-5,000214 contacts →

Exact match

“Luke & Associates (Luke) is a trusted provider of healthcare and professional services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchDallas, TX, United StatesHQ recorded Nov 5, 20261,001-5,000211 contacts →

Exact match

“Paladin Consulting is a nationwide Talent Acquisition and Placement consulting firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchFalls Church, VA, United StatesHQ recorded Nov 5, 2026501-1,000210 contacts →

Exact match

“NVT Staffing is a direct reflection of the rapid growth and expansion of our parent company, Northern Virginia Temporaries, Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchDallas, TX, United StatesHQ recorded Nov 5, 2026501-1,000196 contacts →

Exact match

“Core Personnel is a premiere staffing agency with offices in Dallas, Houston, Austin and Las Vegas.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLisle, United StatesHQ recorded Nov 5, 202651-200183 contacts →

Exact match

“As a leading IT professional services firm specializing in consulting, staffing and recruiting, and executive search.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLewes, DE, United KingdomHQ recorded Nov 5, 2026201-500166 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchBethesda, MD, United StatesHQ recorded Nov 5, 202651-200166 contacts →

Exact match

“Information for Clients: Elite Personnel, a certified woman-owned business, is a full-service recruitment firm providing top-notch personnel for Direct Hire, Temp-to-Hire…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchRoswell, GA, United StatesHQ recorded Nov 5, 202651-200152 contacts →

Exact match

“In business for over 40 years, TechniPower specializes in the temporary and direct placement of experienced technical professionals in all industries and services throughout the…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchTempe, AZ, United StatesHQ recorded Nov 5, 20261,001-5,000151 contacts →

Exact match

“Corporate Job Bank has built our business and reputation since 1985 by finding the best people.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchOrlando, GA, United StatesHQ recorded Nov 5, 202651-200142 contacts →

Exact match

“Crawford Thomas Recruiting is a nationwide recruiting and staffing firm recognized for exceeding client expectations regarding time to fill, value and quality of candidates.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchFort Lauderdale, FL, United StatesHQ recorded Nov 5, 202651-200128 contacts →

Exact match

“Founded in 1993, Vitaver and Associates offers three decades of expertise in professional recruitment services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchPleasanton, TX, United StatesHQ recorded Nov 5, 2026201-500127 contacts →

Exact match

“SOLID Personnel, Inc-"Expertise to Get Things Done" SOLID Personnel is a nationwide specialized recruiting & staffing firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchWest Chester, PA, United StatesHQ recorded Nov 5, 20261,001-5,000122 contacts →

Exact match

“JUDGE DIRECT PLACEMENT, with over 45 years of experience, is a leading provider of top management talent to companies nationwide, with a focus in the areas of Manufacturing…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchSan Leandro, CA, United StatesHQ recorded Nov 5, 202651-200111 contacts →

Exact match

“For almost a decade, Human Bees has been building lasting professional relationships by focusing on trust.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchAlexandria, VA, United StatesHQ recorded Nov 5, 202651-200108 contacts →

Exact match

“For more than 20 years, BAI – one of Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchCamp Hill, PA, United StatesHQ recorded Nov 5, 202651-200105 contacts →

Exact match

“JFC Global specializes in placing professional and technical candidates into both contract and direct hire positions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchCary, NC, United StatesHQ recorded Nov 5, 202651-200105 contacts →

Exact match

“Highmark provides full-service recruiting and staffing services to our clients.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchHenrico, VA, United StatesHQ recorded Nov 5, 202611-50104 contacts →

Exact match

“As we celebrate our 59th year in business, The Richmond Group USA (TRG) has built its reputation as one of the nation’s most established and successful recruiting firms.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 1,417 security clearance staffing firms worldwide

See the full list, filter by size, metro and specialty, and access 2,842 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security clearance staffing firms worldwide at a glance

As of Nov 5, 2026
12.9%Verified-email coverage
15.5Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
744
11-50
392
51-200
185
201-500
54
501-1,000
14
1,001-5,000
18
5,001-10,000
2
10001+
5

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for security clearance staffing firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “security clearance 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. 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 2,842 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 5, 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.

Security clearance staffing firms by location

6 lists · largest first

Every Security clearance staffing firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “security clearance staffing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security clearance staffing firms are there worldwide?

RevenueBase identified 1,417 company matches for security clearance staffing firms worldwide 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?

Omniplex World Services Corporation tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most security clearance staffing firms?

The United States leads with 838 companies, followed by the United Kingdom (61) and India (55). Every security clearance staffing firms list by country and city is linked on this page.

Which city has the most security clearance staffing firms?

New York leads with 25 company records, followed by Houston (22) and Washington (19).

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 2,842 professional contacts with verified work emails tracked across these 1,417 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 5, 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.