Company lists · Data refreshed September 2026

Top 25 Federal modernization consulting firms based in the United States

Name: Federal modernization consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,276 companies tracked

RevenueBase identified 3,276 company matches for federal modernization consulting firms associated with the United States as of September 2026 and tracks 126,658 professional contacts across them, including 45,007 with verified work emails. Washington is the largest hub.

This list covers company matches for federal modernization consulting firms 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 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

3,276Companies

126,658Contacts tracked

45,007Verified emails

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The 25 largest federal modernization consulting firms based in the United States

Ranked by team size

Top 25 of 3,276 company matches for federal modernization consulting firms based in the 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	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 28, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	9,697 contacts →
	Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Accenture Federal Services	Exact match	Arlington, VA, United StatesHQ recorded Sep 28, 2026	10001+	9,125 contacts →
	Exact match “We power reinvention across the US federal government to help agencies deliver greater outcomes using proven commercial solutions, mission expertise, and new technologies – cloud…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Tyler Technologies	Exact match	Plano, TX, United StatesHQ recorded Sep 28, 2026	5,001-10,000	6,842 contacts →
	Exact match “Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	LMI	Exact match	Tysons, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,580 contacts →
	Exact match “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Govcio	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,101 contacts →
	Exact match “GovCIO was founded with a single purpose- to transform government IT.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Csra INC	Exact match	Falls Church, VA, United StatesHQ recorded Sep 28, 2026	10001+	1,495 contacts →
	Exact match “General Dynamics Information Technology and CSRA have united to create the premier provider of high-tech IT solutions to the government IT market.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	PPC	Exact match	Trevose, PA, United StatesHQ recorded Sep 28, 2026	201-500	979 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	REI Systems	Exact match	Sterling, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	863 contacts →
	Exact match “REI Systems delivers reliable and innovative technology solutions that empower federal, state, local, and nonprofit organizations to achieve their missions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Iron BOW Technologies	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	841 contacts →
	Exact match “We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Cognosante	Exact match	Falls Church, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	829 contacts →
	Exact match “At Cognosante, we help create a safe, healthy, more equitable nation for all.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Calibre Systems, INC	Exact match	Alexandria, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	768 contacts →
	Exact match “CALIBRE Systems, Inc.(CALIBRE) is an employee-owned AI transformation company delivering mission focused solutions to Defense, Federal / Civil, and Commercial clients.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Systems Engineering Services Corporation Sesc	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	201-500	747 contacts →
	Exact match “Systems Engineering Services Corporation (SESC), founded in 1989, is a leading provider of technology solutions to Fortune companies and government organizations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Salient Crgt	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	639 contacts →
	Exact match “For over 20 years, Salient CRGT has upheld its mission to "empower our diverse, hard-working team to deliver high-value solutions that make positive impacts on missions and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Abacus Technology Corporation	Exact match	Chevy Chase, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	627 contacts →
	Exact match “Abacus Technology Corporation delivers leading edge, high quality assistance in response to complex technology challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Planned Systems International	Exact match	Columbia, MD, United StatesHQ recorded Sep 28, 2026	1,001-5,000	611 contacts →
	Exact match “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Vtech Solution INC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	201-500	576 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Srinsoft INC	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 28, 2026	501-1,000	568 contacts →
	Exact match “SrinSoft is a leading IT consulting & engineering firm specializing in digital transformation, software development, and engineering solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Tista Science And Technology Corporation	Exact match	Rockville, MD, United StatesHQ recorded Sep 28, 2026	1,001-5,000	543 contacts →
	Exact match “Since 2005, TISTA has been a trusted partner with innovative IT solutions for the federal government.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Alpha Omega	Exact match	Vienna, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	496 contacts →
	Exact match “Alpha Omega delivers mission-focused solutions to ensure our nation’s continued global leadership.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Vencore INC	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	485 contacts →
	Exact match “As of June 1, 2018, we are Perspecta.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	NEW York State Technology Enterprise Corporation Nystec	Exact match	Rome, NY, United StatesHQ recorded Sep 28, 2026	201-500	480 contacts →
	Exact match “For more than 30 years, NYSTEC has provided independent advisory services to our government partners.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Brillient Corporation	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	455 contacts →
	Exact match “Brillient is an award-winning Full Spectrum Digital Transformation company enabling clients to transform through the continuum of analog, to digital, to analytics leading to…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	ISCI	Exact match	Manassas, VA, United StatesHQ recorded Sep 28, 2026	201-500	446 contacts →
	Exact match “Since 2001, Information Sciences Consulting, Inc.(ISCI) has earned an exemplary reputation for providing superior customer service to our clients.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	FEI Systems	Exact match	Columbia, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	418 contacts →
	Exact match “FEI Systems is a leading information technology, services, and analysis organization.” 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 “federal modernization consulting 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 25 of 3,276 federal modernization consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 45,007 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Federal modernization consulting firms based in the United States at a glance

As of Sep 28, 2026

35.5%Verified-email coverage

38.7Average contacts per company

11-50Median size (employees)

5.9%Largest-city concentration · Washington

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,524

11-50

937

51-200

586

201-500

150

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 3,276 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 “federal modernization consulting 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 45,007 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.

Federal modernization consulting firms 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 “federal modernization consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many federal modernization consulting firms are there based in the United States?

RevenueBase identified 3,276 company matches for federal modernization consulting firms 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?

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

Which city has the most federal modernization consulting firms?

Washington leads with 194 company records, followed by Reston (109) and Arlington (95).

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 45,007 professional contacts with verified work emails tracked across these 3,276 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.