Company lists · Data refreshed September 2026

Top 17 IT security staffing firms based in Washington, United States

Name: IT security staffing firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 43 companies tracked

RevenueBase identified 43 company matches for IT security staffing firms associated with Washington, United States as of September 2026 and tracks 373 professional contacts across them, including 117 with verified work emails. Across the United States, New York is the largest hub for this category (156 companies); Washington has 43.

This list covers company matches for IT security staffing firms associated with Washington, 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 28, 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 28, 2026 How this list was built

43Companies

373Contacts tracked

117Verified emails

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The 17 largest IT security staffing firms based in Washington, United States

Ranked by team size

Top 17 of 43 company matches for IT security staffing firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Arlo Solutions	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	51-200	100 contacts →
	Exact match “Arlo Solutions (Arlo), is a Washington, DC professional services company, providing cybersecurity and management consulting services to the US government in the defense…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Avid Systems LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	51-200	39 contacts →
	Exact match “Avid Systems LLC is a woman-owned Information Technology Services firm based in Washington, DC, with over 20 years of proven expertise in delivering transformative IT solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	The Efiia Group	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “The Efiia Group delivers cybersecurity solutions for Government.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Inguardians, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “InGuardians, Inc is an independent information security consulting company based in Washington D.C.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	The Josef Group INC	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	1-10	9 contacts →
	Exact match “The world is a vastly different place than it used to be.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Zamotek INC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	9 contacts →
	Exact match “Welcome to Zamotek, a premier IT staffing and recruiting firm dedicated to connecting exceptional talent with top organizations in the tech industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Artisys Corporation	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “Artisys Corporation is an ethnic minority-owned, Service-Disabled Veteran-Owned Business (SDVOB) with over 35 years of experience delivering transformative IT consulting and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Cyberassure	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	6 contacts →
	Exact match “CyberAssure provides expert cybersecurity services to public and private sector organizations of every size to assure effective information security governance, risk management…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Ramarc Solutions	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	6 contacts →
	Exact match “Ramarc Solutions is a US and European Information Technology professional services firm with a wealthy knowledge base and experience in the fundamentals of Information Technology…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Cloudbyte Group LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	5 contacts →
	Exact match “CloudByte Group is a managed IT and cybersecurity firm headquartered in McLean, Virginia.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Calano & Associates, LLC	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	51-200	4 contacts →
	Exact match “Calano & Associates, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Rapidos, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	3 contacts →
	Exact match “Rapidos is an innovative Information Technology and Staffing Solutions provider based in Washington, DC, specializing in delivering high-impact outcomes through comprehensive IT…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Swoop Staffing	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Here at Swoop we combine years of tech industry experience with a unique streamline candidate selection process to provide pre-screened, quality candidates that best fit your…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Williams Infosec LLC	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	11-50	2 contacts →
	Exact match “Cyber Security Firm” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	The JMB Consulting Group, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “The JMB Consulting Group, LLC is a Native American and woman-owned small business based in the District of Columbia, Maryland, and Virginia started by a Certified Information…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Vanaheim Security	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “For any company that finds U.S.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	First Arrow Executive Search	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “First Arrow Executive Search specializes in Executive Search in the federal and defense\aerospace sector and the commercial cybersecurity sector.” Recorded in the RevenueBase company graph · Sep 28, 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 “IT security staffing 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 17 of 43 IT security staffing firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 117 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security staffing firms based in Washington, United States at a glance

As of Sep 28, 2026

31.4%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 43 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 Washington, United States whose business descriptions match “IT security 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. 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 117 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 28, 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.

IT security staffing firms by metro in the United States

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

How many IT security staffing firms are there based in Washington, United States?

RevenueBase identified 43 company matches for IT security staffing firms associated with Washington, 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?

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

Which city in the United States has the most IT security staffing firms?

New York leads the United States with 156 company records, followed by Dallas (78) and Austin (77). Washington has 43.

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 117 professional contacts with verified work emails tracked across these 43 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 28, 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.