Company lists · Data refreshed September 2026

Top 25 Federal systems integrators based in the United States

Name: Federal systems integrators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,738 companies tracked

RevenueBase identified 3,738 federal systems integrators headquartered in the United States as of September 2026 and tracks 244,957 professional contacts across them, including 58,062 with verified work emails. Washington is the largest hub.

This list covers federal systems integrators headquartered in the 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 21, 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 21, 2026 86% judged on-target in blind review

3,738Companies

244,957Contacts tracked

58,062Verified emails

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The 25 largest federal systems integrators based in the United States

Ranked by team size

Top 25 of 3,738 federal systems integrators based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to federal systems integrators: 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	General Dynamics Information Technology	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 21, 2026	10001+	23,974 contacts →
	Indirect evidence “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
2	Peraton	Indirect evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	10001+	10,793 contacts →
	Indirect evidence “At Peraton, we're at the forefront of delivering the next big thing every day.” Source: RevenueBase Database · checked Sep 21, 2026
3	Mantech	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	5,001-10,000	9,697 contacts →
	Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 21, 2026
4	Convergint	Strong evidence	Hoffman Estates, IL, United StatesHQ checked Sep 21, 2026	10001+	5,707 contacts →
	Strong evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 21, 2026
5	Asrc Federal	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	5,001-10,000	4,542 contacts →
	Partial evidence “ASRC Federal’s employees provide solutions for more than 30 U.S.” Source: RevenueBase Database · checked Sep 21, 2026
6	Carahsoft	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,945 contacts →
	Partial evidence “Carahsoft is The Trusted IT Solutions Provider®, supporting Federal, State, Local Government, Education, Healthcare and Private Sector industries.” Source: RevenueBase Database · checked Sep 21, 2026
7	LMI	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,580 contacts →
	Indirect evidence “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Source: RevenueBase Database · checked Sep 21, 2026
8	SOSI	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,859 contacts →
	Partial evidence “Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private, founder-led defense and government solutions firm specializing in advanced technology systems and mission…” Source: RevenueBase Database · checked Sep 21, 2026
9	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,800 contacts →
	Indirect evidence “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Source: RevenueBase Database · checked Sep 21, 2026
10	Perspecta	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 21, 2026	10001+	1,753 contacts →
	Indirect evidence “At Perspecta we question, we seek and we solve.” Source: RevenueBase Database · checked Sep 21, 2026
11	DMI	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,683 contacts →
	Indirect evidence “DMI is a leading provider of digital services and technology solutions with a focus on end-to-end managed services, including managed mobility, cloud, cybersecurity, network…” Source: RevenueBase Database · checked Sep 21, 2026
12	ASM Research	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,568 contacts →
	Strong evidence “ASM Research, an Accenture Federal Services Company, is an information solutions integrator and a leading provider of innovative technology solutions and advanced analytical…” Source: RevenueBase Database · checked Sep 21, 2026
13	Dynetics, INC	Indirect evidence	Huntsville, AL, United StatesHQ checked Sep 21, 2026	10001+	1,532 contacts →
	Indirect evidence “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Source: RevenueBase Database · checked Sep 21, 2026
14	Government Acquisitions	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 21, 2026	n/a	1,440 contacts →
	Indirect evidence “Government Acquisitions, LLC (GAI) stands at the forefront of a transformative era, where artificial intelligence is reshaping our world and the stakes have never been higher.” Source: RevenueBase Database · checked Sep 21, 2026
15	Engility Corporation	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	5,001-10,000	1,245 contacts →
	Partial evidence “Engility Corporation is now part of SAIC, a premier technology integrator based in Reston, Virginia.” Source: RevenueBase Database · checked Sep 21, 2026
16	22nd Century Technologies INC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	5,001-10,000	1,234 contacts →
	Strong evidence “22nd Century Technologies Inc,(22nd) is a mid-size Service Integrator, focused on providing IP enabled managed services and solutions to Federal, State and Local governments.” Source: RevenueBase Database · checked Sep 21, 2026
17	PPC	Indirect evidence	Trevose, PA, United StatesHQ checked Sep 21, 2026	201-500	979 contacts →
	Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 21, 2026
18	Chugach Government Solutions, LLC	Indirect evidence	Anchorage, AK, United StatesHQ checked Sep 21, 2026	1,001-5,000	954 contacts →
	Indirect evidence “Chugach Government Solutions,(CGS) is a government contracting company formed by Chugach Alaska Corporation.” Source: RevenueBase Database · checked Sep 21, 2026
19	The MIL Corporation	Partial evidence	Bowie, MD, United StatesHQ checked Sep 21, 2026	501-1,000	941 contacts →
	Partial evidence “Established in 1980, MIL provides innovative cyber, engineering, financial, and information technology services to the federal government.” Source: RevenueBase Database · checked Sep 21, 2026
20	Quantum SKY	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	872 contacts →
	Partial evidence “Quantum Sky is a mission technology company that builds secure AI, cyber, cloud, and quantum capabilities for defense, intelligence, and federal civilian agencies.” Source: RevenueBase Database · checked Sep 21, 2026
21	REI Systems	Strong evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	501-1,000	863 contacts →
	Strong evidence “REI Systems delivers reliable and innovative technology solutions that empower federal, state, local, and nonprofit organizations to achieve their missions.” Source: RevenueBase Database · checked Sep 21, 2026
22	Iron BOW Technologies	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	501-1,000	841 contacts →
	Indirect evidence “We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.” Source: RevenueBase Database · checked Sep 21, 2026
23	Cognosante	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	829 contacts →
	Indirect evidence “At Cognosante, we help create a safe, healthy, more equitable nation for all.” Source: RevenueBase Database · checked Sep 21, 2026
24	Calibre Systems, INC	Strong evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	501-1,000	768 contacts →
	Strong evidence “CALIBRE Systems, Inc.(CALIBRE) is an employee-owned AI transformation company delivering mission focused solutions to Defense, Federal / Civil, and Commercial clients.” Source: RevenueBase Database · checked Sep 21, 2026
25	Systems Engineering Services Corporation Sesc	Partial evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	201-500	747 contacts →
	Partial evidence “Systems Engineering Services Corporation (SESC), founded in 1989, is a leading provider of technology solutions to Fortune companies and government organizations.” Source: RevenueBase Database · checked Sep 21, 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: federal systems integrators. 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 federal systems integrators.
Partial evidence: Its own public description names part of federal systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name federal systems integrators. 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 3,738 federal systems integrators based in the United States

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Federal systems integrators based in the United States at a glance

As of Sep 21, 2026

23.7%Verified-email coverage

65.5Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Washington

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,146

11-50

1,378

51-200

834

201-500

217

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 3,738 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 federal systems integrators, 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 the United States whose own description of what they do matches “federal systems integrators”. 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 federal systems integrators), 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 federal systems integrators, and records with no verified work email. Companies headquartered outside United States 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, 58,062 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 21, 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.

Federal systems integrators by metro

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 federal systems integrators, 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 federal systems integrators are there based in the United States?

RevenueBase identified 3,738 federal systems integrators headquartered in the 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?

General Dynamics Information Technology, headquartered in Falls Church, tops this list with the largest team on record.

Which city has the most federal systems integrators?

Washington leads with 130 headquartered companies, followed by Reston (114) and Herndon (84).

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 58,062 verified decision-maker contacts tracked across these 3,738 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 21, 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.