Company lists · Data refreshed September 2026

Top 25 Federal IT consulting services based in Washington, United States

Name: Federal IT consulting services 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 332 companies tracked

RevenueBase identified 332 federal IT consulting services headquartered in Washington, United States as of September 2026 and tracks 9,901 professional contacts across them, including 1,741 with verified work emails. Across the United States, Washington is the largest hub for this category.

This list covers federal IT consulting services headquartered in Washington, 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

332Companies

9,901Contacts tracked

1,741Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest federal IT consulting services based in Washington, United States

Ranked by team size

Top 25 of 332 federal IT consulting services based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to federal IT consulting services: 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	Vtech Solution INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	576 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
2	Gryphon Technologies, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	454 contacts →
	Indirect evidence “Gryphon Technologies - now part of ManTech, is headquartered in Washington DC.” Source: RevenueBase Database · checked Sep 28, 2026
3	Computer World Services Corp. CWS	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	314 contacts →
	Indirect evidence “With over 30 years of hands-on experience, Computer World Services Corp.” Source: RevenueBase Database · checked Sep 28, 2026
4	Mcallister & Quinn	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	170 contacts →
	Strong evidence “McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.” Source: RevenueBase Database · checked Sep 28, 2026
5	Obsidian Global, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	169 contacts →
	Indirect evidence “Obsidian is an advanced technology company, designing enterprise solutions for our clients’ critical mission and business needs.” Source: RevenueBase Database · checked Sep 28, 2026
6	Analytica	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	135 contacts →
	Partial evidence “Analytica is an award-winning consulting and technology services provider that supports public-sector health, civilian, and national security.” Source: RevenueBase Database · checked Sep 28, 2026
7	DHA Group, INC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	135 contacts →
	Strong evidence “DHA is a full-service Information Technology and Consulting firm dedicated to providing mission-critical services to our Federal Government and commercial clients.” Source: RevenueBase Database · checked Sep 28, 2026
8	Venesco, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	120 contacts →
	Strong evidence “Venesco, LLC is a premier government contractor delivering Healthcare, IT, Research & Development, and a range of mission‑critical services to federal agencies.” Source: RevenueBase Database · checked Sep 28, 2026
9	CGH Technologies, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	115 contacts →
	Indirect evidence “CGH Technologies Inc, delivers information engineering solutions and management support services to United States and international government and private sector organizations.” Source: RevenueBase Database · checked Sep 28, 2026
10	Networking For Future NFF	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	108 contacts →
	Indirect evidence “Since 1996, Networking For Future, Inc.(NFF) has been engineering the backbone of mission-critical systems for government and enterprise clients.” Source: RevenueBase Database · checked Sep 28, 2026
11	Shorepoint INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	n/a	106 contacts →
	Indirect evidence “ShorePoint recognizes that cybersecurity is the challenge of our generation.” Source: RevenueBase Database · checked Sep 28, 2026
12	Aver, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	103 contacts →
	Indirect evidence “AVER, LLC – Data and Modernization Experts, delivers exceptional client service with great people and transformative technology solutions to enable Government mission success.” Source: RevenueBase Database · checked Sep 28, 2026
13	Expression	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	101 contacts →
	Indirect evidence “Expression is a leading provider of tailored and integrated information technology, software engineering, data analytics, and electromagnetic spectrum management solutions for…” Source: RevenueBase Database · checked Sep 28, 2026
14	Arlo Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	100 contacts →
	Partial evidence “Arlo Solutions (Arlo), is a Washington, DC professional services company, providing cybersecurity and management consulting services to the US government in the defense…” Source: RevenueBase Database · checked Sep 28, 2026
15	Simple Technology Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	90 contacts →
	Partial evidence “Simple Technology Solutions (STS) has in-depth experience helping federal & state government agencies in their Agile/DevOps/Cloud adoption & transformation.” Source: RevenueBase Database · checked Sep 28, 2026
16	Creoal SMX	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	87 contacts →
	Partial evidence “Acquired by SMX in late 2023, Creoal drives digital transformation through innovative IT solutions that leverage Oracle, Salesforce, and leading-edge technologies (e.g, AI, RPA…” Source: RevenueBase Database · checked Sep 28, 2026
17	Veracity Engineering	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “Since 2001, Veracity Engineering has been successful in building, growing, and performing on a portfolio of technically challenging engineering and program management engagements…” Source: RevenueBase Database · checked Sep 28, 2026
18	Tsymmetry	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Indirect evidence “You need more than a contractor.” Source: RevenueBase Database · checked Sep 28, 2026
19	Akira Technologies	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “Akira Technologies is a data and cloud technology company committed to solving the Federal Government’s most complex challenges and helping agencies unlock sustainable value.” Source: RevenueBase Database · checked Sep 28, 2026
20	Saalex Corporation	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	73 contacts →
	Indirect evidence “Established in under the visionary leadership of Travis Mack, Saalex Corporation has transformed into an Advanced Technology Systems Integrator.” Source: RevenueBase Database · checked Sep 28, 2026
21	Business Technology Integrators	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	72 contacts →
	Strong evidence “BTI is a proud Service-Disabled Veteran-Owned Small Business (SDVOSB) with 25 years in business and trusted federal partner delivering mission-focused technology and consulting…” Source: RevenueBase Database · checked Sep 28, 2026
22	Dantech Corporation INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	72 contacts →
	Partial evidence “As organizations navigate the demands of today’s fast-moving IT landscape, Dantech stands as a trusted partner with the expertise to guide, implement, and optimize technology…” Source: RevenueBase Database · checked Sep 28, 2026
23	Longevity Consulting	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	71 contacts →
	Strong evidence “Longevity Consulting is a customer-focused strategic management and IT consulting firm that helps federal agencies achieve mission objectives, improve outcomes, and strengthen…” Source: RevenueBase Database · checked Sep 28, 2026
24	FWG Solutions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	66 contacts →
	Indirect evidence “FWG Solutions is an award-winning firm certified by the SBA as an 8(a) that was founded in 2012.” Source: RevenueBase Database · checked Sep 28, 2026
25	Intepros Federal	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	51 contacts →
	Strong evidence “IntePros Federal is a Service-Disabled Veteran-Owned Small Business (SDVOSB) founded in 2009 with the goal of providing IT services to multiple agencies/departments of the federal…” 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: federal IT consulting services. 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 IT consulting services.
Partial evidence: Its own public description names part of federal IT consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name federal IT consulting services. 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 332 federal IT consulting services based in Washington, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,741 reachable decision-makers.

Free signup · no credit card

View the full list →

Federal IT consulting services based in Washington, United States at a glance

As of Sep 28, 2026

17.6%Verified-email coverage

29.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

148

11-50

113

51-200

201-500

501-1,000

1,001-5,000

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 332 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 IT consulting services, 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 Washington, United States whose own description of what they do matches “federal IT consulting services”. 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 IT consulting services), 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 IT consulting services, and records with no verified work email. Companies headquartered outside Washington 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, 1,741 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 IT consulting services 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 federal IT consulting services, 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 IT consulting services are there based in Washington, United States?

RevenueBase identified 332 federal IT consulting services headquartered in Washington, 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?

Vtech Solution INC, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most federal IT consulting services?

Washington leads the United States with 332 headquartered companies, followed by New York (301) and Houston (219).

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 1,741 verified decision-maker contacts tracked across these 332 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.

Ready to reach these companies? Verified emails and direct dials for all 332 federal IT consulting services based in Washington, United States. Start with a free account, no credit card.

Download this list →

Related lists

Federal IT consulting services by geography

Browse the directory

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.