Company lists · Data refreshed September 2026
Top 25 Federal modernization consulting firms based in the United States
RevenueBase identified 3,276 federal modernization consulting firms headquartered in 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 federal modernization consulting firms 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 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.
The 25 largest federal modernization consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,815 contacts → | ||||
Indirect evidence “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 9,697 contacts → | ||||
Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 9,125 contacts → | ||||
Partial evidence “We power reinvention across the US federal government to help agencies deliver greater outcomes using proven commercial solutions, mission expertise, and new technologies – cloud…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,842 contacts → | ||||
Indirect evidence “Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,101 contacts → | ||||
Indirect evidence “GovCIO was founded with a single purpose- to transform government IT.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,495 contacts → | ||||
Indirect evidence “General Dynamics Information Technology and CSRA have united to create the premier provider of high-tech IT solutions to the government IT market.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 979 contacts → | ||||
Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 863 contacts → | ||||
Partial 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 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 841 contacts → | ||||
Indirect evidence “We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 829 contacts → | ||||
Indirect evidence “At Cognosante, we help create a safe, healthy, more equitable nation for all.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 768 contacts → | ||||
Partial 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 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 747 contacts → | ||||
Indirect 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 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 639 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 627 contacts → | ||||
Indirect evidence “Abacus Technology Corporation delivers leading edge, high quality assistance in response to complex technology challenges.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 611 contacts → | ||||
Indirect evidence “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 576 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 568 contacts → | ||||
Partial evidence “SrinSoft is a leading IT consulting & engineering firm specializing in digital transformation, software development, and engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 543 contacts → | ||||
Partial evidence “Since 2005, TISTA has been a trusted partner with innovative IT solutions for the federal government.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 496 contacts → | ||||
Indirect evidence “Alpha Omega delivers mission-focused solutions to ensure our nation’s continued global leadership.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 485 contacts → | ||||
Indirect evidence “As of June 1, 2018, we are Perspecta.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 480 contacts → | ||||
Indirect evidence “For more than 30 years, NYSTEC has provided independent advisory services to our government partners.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 455 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 446 contacts → | ||||
Partial evidence “Since 2001, Information Sciences Consulting, Inc.(ISCI) has earned an exemplary reputation for providing superior customer service to our clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 418 contacts → | ||||
Indirect evidence “FEI Systems is a leading information technology, services, and analysis organization.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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 modernization consulting firms. 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 modernization consulting firms.
- Partial evidence
- Its own public description names part of federal modernization consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name federal modernization consulting firms. 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 3,276 federal modernization consulting firms based in the United States
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Federal modernization consulting firms based in the United States at a glance
As of Sep 28, 2026Companies by employee count
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
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among federal modernization consulting firms, 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 modernization consulting firms”. 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 modernization consulting firms), 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 modernization consulting firms, 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, 45,007 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.
Federal modernization consulting firms by metro
- Federal modernization consulting firms in Washington194
- Federal modernization consulting firms in Reston109
- Federal modernization consulting firms in Arlington95
- Federal modernization consulting firms in Mclean72
- Federal modernization consulting firms in Fairfax67
- Federal modernization consulting firms in Atlanta65
- Federal modernization consulting firms in Vienna63
- Federal modernization consulting firms in Herndon61
- Federal modernization consulting firms in Alexandria55
- Federal modernization consulting firms in New York51
- Federal modernization consulting firms in Leesburg44
- Federal modernization consulting firms in Rockville44
- Federal modernization consulting firms in Houston39
- Federal modernization consulting firms in Columbia38
- Federal modernization consulting firms in Bethesda36
- Federal modernization consulting firms in Ashburn34
- Federal modernization consulting firms in Baltimore32
- Federal modernization consulting firms in Chicago32
- Federal modernization consulting firms in Chantilly31
- Federal modernization consulting firms in Austin27
- Federal modernization consulting firms in Dallas27
- Federal modernization consulting firms in Sacramento27
- Federal modernization consulting firms in Falls Church26
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 modernization consulting firms, 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 modernization consulting firms are there based in the United States?
RevenueBase identified 3,276 federal modernization consulting firms 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?
Guidehouse, headquartered in Mclean, tops this list with the largest team on record.
Which city has the most federal modernization consulting firms?
Washington leads with 194 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 45,007 verified decision-maker contacts tracked across these 3,276 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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Federal modernization consulting firms by geography
- Federal modernization consulting firms based in Canberra, Australia
- Federal modernization consulting firms based in Melbourne, Australia
- Federal modernization consulting firms based in Sydney, Australia
- Federal modernization consulting firms based in Sao Paulo, Brazil
- Federal modernization consulting firms based in Ottawa, Canada
- Federal modernization consulting firms based in Toronto, Canada
- Federal modernization consulting firms based in Paris, France
- Federal modernization consulting firms based in London, United Kingdom
- Federal modernization consulting firms based in Alexandria, United States
- Federal modernization consulting firms based in Arlington, United States
- Federal modernization consulting firms based in Ashburn, United States
- Federal modernization consulting firms based in Atlanta, United States
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.
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