Company lists · Data refreshed September 2026

Top 25 Defense contractor IT staffing companies based in Mclean, United States

Name: Defense contractor IT staffing companies based in Mclean, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 38 companies tracked

RevenueBase identified 38 defense contractor IT staffing companies headquartered in Mclean, United States as of September 2026 and tracks 14,201 professional contacts across them, including 1,849 with verified work emails. Across the United States, New York is the largest hub for this category (132 companies); Mclean has 38.

This list covers defense contractor IT staffing companies headquartered in Mclean, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

38Companies

14,201Contacts tracked

1,849Verified emails

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The 25 largest defense contractor IT staffing companies based in Mclean, United States

Ranked by team size

Top 25 of 38 defense contractor IT staffing companies based in Mclean, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to defense contractor IT staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Dyncorp International	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	10001+	9,964 contacts →
	Indirect evidence “DynCorp International is now part of Amentum.” Source: RevenueBase Database · checked Sep 28, 2026
2	American Systems	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,899 contacts →
	Partial evidence “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Source: RevenueBase Database · checked Sep 28, 2026
3	Obxtek	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	201-500	349 contacts →
	Indirect evidence “OBXtek is a relationship-driven information technology and diversified professional services company.” Source: RevenueBase Database · checked Sep 28, 2026
4	Intellibridge, An Agile Defense Company	Strong evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	201-500	276 contacts →
	Strong evidence “IntelliBridge, An Agile Defense Company, delivers IT strategy, cloud, cybersecurity, application, data and analytics, enterprise IT, intelligence analysis, and mission operation…” Source: RevenueBase Database · checked Sep 28, 2026
5	Validatek, INC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	201-500	224 contacts →
	Partial evidence “ValidaTek is a premier government IT consulting firm based in the Washington DC area that drives technology transformation and secures mission-critical systems for our federal…” Source: RevenueBase Database · checked Sep 28, 2026
6	Cybermedia Technologies, LLC Ctec	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	223 contacts →
	Indirect evidence “We modernize legacy infrastructure, secure mission-critical systems and design digital experiences that impact millions of federal workers & American citizens every day.” Source: RevenueBase Database · checked Sep 28, 2026
7	A-Tek, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	201-500	159 contacts →
	Indirect evidence “As a trusted services and solutions provider, A-TEK, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
8	Valiant Solutions	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	201-500	152 contacts →
	Partial evidence “Valiant Solutions, LLC stands out as a premier provider of Cybersecurity and IT services aiding the Federal Government in staying ahead of complex information security challenges.” Source: RevenueBase Database · checked Sep 28, 2026
9	Network Designs, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	152 contacts →
	Indirect evidence “NDi is a Verified Service-Disabled Veteran Owned Small Business [SDVOSB] professional services firm, supporting Federal and Commercial customers since 1995.” Source: RevenueBase Database · checked Sep 28, 2026
10	Piper Companies	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	501-1,000	146 contacts →
	Indirect evidence “At Piper, we obsess about the success of our customers and consultants.” Source: RevenueBase Database · checked Sep 28, 2026
11	Saliense	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “Saliense is a high-end Technology Solutions provider based out of Tysons Corner, VA.” Source: RevenueBase Database · checked Sep 28, 2026
12	22nd Century Staffing	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	79 contacts →
	Partial evidence “22nd Century Staffing Inc.(TSCSI) is the fastest growing staffing company in North America and the only firm of its kind specialized in all type of staffing services including…” Source: RevenueBase Database · checked Sep 28, 2026
13	Zenpoint Solutions LLC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	60 contacts →
	Partial evidence “ZenPoint is a small, 8(a) certified, woman-owned IT Services company.” Source: RevenueBase Database · checked Sep 28, 2026
14	West 4th Strategy, LLC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “West 4th, now strengthened by the acquisition of Integrated Systems (ISI), delivers rapid response technology services and mission-focused solutions to civilian, defense, and…” Source: RevenueBase Database · checked Sep 28, 2026
15	OCT Consulting LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Indirect evidence “OCT Consulting LLC is a Small Business providing professional services and information technology solutions to U.S.” Source: RevenueBase Database · checked Sep 28, 2026
16	Infinity Technology, LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “Infinity Technology, LLC, is a certified 8(a), Service-Disabled Veteran-Owned, Small Disadvantaged Business.” Source: RevenueBase Database · checked Sep 28, 2026
17	Acruex INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
18	Leading Path Consulting	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “Leading Path is an award-winning, minority, woman-owned (NMSDC / MBE) technology consulting company that brings our clients top talent and creative solutions.” Source: RevenueBase Database · checked Sep 28, 2026
19	Counterpointe Solutions, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Counterpointe is a CMMI Level 3 certified.” Source: RevenueBase Database · checked Sep 28, 2026
20	RJM Technologies	Strong evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Strong evidence “We are a premier staffing and recruiting company that specializes in connecting talented IT, Marketing, and Project Management professionals with our growing list of top-notch…” Source: RevenueBase Database · checked Sep 28, 2026
21	Govstar	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Life is too short to work for companies that have lost their fire.” Source: RevenueBase Database · checked Sep 28, 2026
22	Lewis-Price & Associates, INC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	14 contacts →
	Partial evidence “Lewis-Price is an SBA 8(a) certified staffing company committed to providing solutions to our clients and teaming partners.” Source: RevenueBase Database · checked Sep 28, 2026
23	Astre Consulting Services INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “At Astre we work for a commitment everyday.” Source: RevenueBase Database · checked Sep 28, 2026
24	Directus Consulting	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Directus Consulting is small technolgy consulting firm serving the Washington DC metro area.” Source: RevenueBase Database · checked Sep 28, 2026
25	Fedstack	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	51-200	4 contacts →
	Indirect evidence “Fedstack, the Federal arm of Smoothstack, Inc, is a technology and workforce solutions provider led by an experienced leadership team who collectively brings over 100 years of…” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: defense contractor IT staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names defense contractor IT staffing companies.
Partial evidence: Its own public description names part of defense contractor IT staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense contractor IT staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 38 defense contractor IT staffing companies based in Mclean, United States

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Defense contractor IT staffing companies based in Mclean, United States at a glance

As of Sep 28, 2026

13.0%Verified-email coverage

373.7Average contacts per company

51-200Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 38 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among defense contractor IT staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Mclean, United States whose own description of what they do matches “defense contractor IT staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names defense contractor IT staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among defense contractor IT staffing companies, and records with no verified work email. Companies headquartered outside Mclean are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,849 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Defense contractor IT staffing companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names defense contractor IT staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many defense contractor IT staffing companies are there based in Mclean, United States?

RevenueBase identified 38 defense contractor IT staffing companies headquartered in Mclean, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dyncorp International, headquartered in Mclean, tops this list with the largest team on record.

Which city in the United States has the most defense contractor IT staffing companies?

New York leads the United States with 132 headquartered companies, followed by Houston (116) and Dallas (108). Mclean has 38.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,849 verified decision-maker contacts tracked across these 38 companies.

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 Smart Search, 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.