Company lists · Data refreshed September 2026

Top 25 Big IT consulting firms based in Mclean, United States

Name: Big IT consulting firms based in Mclean, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 89 companies tracked

RevenueBase identified 89 big IT consulting firms headquartered in Mclean, United States as of September 2026 and tracks 16,516 professional contacts across them, including 6,629 with verified work emails. New York is the largest hub.

This list covers big IT consulting firms 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 23, 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 23, 2026 86% judged on-target in blind review

89Companies

16,516Contacts tracked

6,629Verified emails

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The 25 largest big IT consulting firms based in Mclean, United States

Ranked by team size

Top 25 of 89 big IT consulting firms based in Mclean, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big IT consulting firms: 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	Guidehouse	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	10001+	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 23, 2026
2	DISYS	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,108 contacts →
	Strong evidence “Digital Intelligence Systems, LLC (DISYS) is a global technology and consulting firm specializing in Managed Services, Business, Consulting, and IT/Non-IT Staffing Services.” Source: RevenueBase Database · checked Sep 23, 2026
3	Validatek, INC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	201-500	224 contacts →
	Strong 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 23, 2026
4	Bart & Associates, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	1,001-5,000	187 contacts →
	Indirect evidence “Headquartered in McLean, Va, B&A is a leading information technology systems integrator providing solutions through the following service offerings: Modernization &…” Source: RevenueBase Database · checked Sep 23, 2026
5	Humantouch, LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	201-500	110 contacts →
	Indirect evidence “We bridge the gap between people & technology.” Source: RevenueBase Database · checked Sep 23, 2026
6	Saliense	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 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 23, 2026
7	Eway Corp	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	62 contacts →
	Strong evidence “eWay Corp is a global IT Consulting company with a simple motto: Forward.” Source: RevenueBase Database · checked Sep 23, 2026
8	Technology Ventures	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	201-500	54 contacts →
	Indirect evidence “Technology Ventures is a leading technology services company delivering a broad portfolio of business and technology solutions and staffing to help its clients improve their…” Source: RevenueBase Database · checked Sep 23, 2026
9	Omnisystems, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	53 contacts →
	Indirect evidence “OmniSystems delivers state-of-the-art solutions, specializing in the development and integration of web-enabled systems.” Source: RevenueBase Database · checked Sep 23, 2026
10	Mfgs, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	201-500	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
11	Main Digital	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	47 contacts →
	Indirect evidence “Main Digital is a consultancy that transforms and optimizes business and government.” Source: RevenueBase Database · checked Sep 23, 2026
12	Millsapps, Ballinger & Associates Mb&a	Partial evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	44 contacts →
	Partial evidence “Millsapps, Ballinger & Associates (MB & A) is a full life cycle management consulting company focusing on helping organizations achieve their goals and increase organizational…” Source: RevenueBase Database · checked Sep 23, 2026
13	Artemis Consulting	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	501-1,000	39 contacts →
	Strong evidence “Artemis Consulting, a wholly owned subsidiary of ARETUM, is an IT Services and Management Consulting firm in the Washington D.C.” Source: RevenueBase Database · checked Sep 23, 2026
14	Rvna Technologies	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	38 contacts →
	Indirect evidence “RVNA Tech is an international technology company focused on advising on process improvement based on best practices and high-growth & emerging cloud solutions proven to drive…” Source: RevenueBase Database · checked Sep 23, 2026
15	Creative Systems And Consulting, Part Of ICF	Partial evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	201-500	36 contacts →
	Partial evidence “Founded in 2010, Creative Systems and Consulting, LLC, has been at the forefront of Digital Transformation across Federal Government, driving innovation, ingenuity, and industry…” Source: RevenueBase Database · checked Sep 23, 2026
16	Xscion Solutions	Partial evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	35 contacts →
	Partial evidence “xScion Solutions (xScion) is a technology consulting solutions firm that helps organizations in highly regulated industries Turn Change Into Value® through Business Agility, Cloud…” Source: RevenueBase Database · checked Sep 23, 2026
17	S-Nimbus	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	32 contacts →
	Indirect evidence “Some missions can't fail.” Source: RevenueBase Database · checked Sep 23, 2026
18	Leading Path Consulting	Partial evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	28 contacts →
	Partial 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 23, 2026
19	Gbti Solutions	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	22 contacts →
	Indirect evidence “GBTI Solutions, Inc.” Source: RevenueBase Database · checked Sep 23, 2026
20	Morphworks	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	18 contacts →
	Indirect evidence “We create alignment between users and implementation teams so that application, technology, and risk evolution can be achieved while making change desirable.” Source: RevenueBase Database · checked Sep 23, 2026
21	Skysoft INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	17 contacts →
	Indirect evidence “SkySoft, INC is a Small, Women-owned and Minority-owned Business (SWaM) certified company based in VA and we are in Information Technology & Management Consultancy founded by Team…” Source: RevenueBase Database · checked Sep 23, 2026
22	Waditek	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	16 contacts →
	Indirect evidence “Waditek specializes in transforming staid business practices for our clients by putting digital transformation into practice.” Source: RevenueBase Database · checked Sep 23, 2026
23	Technalink	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	16 contacts →
	Strong evidence “TechnaLink is a leading woman- and minority-owned IT services and management consulting provider located in the Washington, DC, area.” Source: RevenueBase Database · checked Sep 23, 2026
24	Axis Management Group	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	51-200	13 contacts →
	Strong evidence “AXIS Management Group (AXIS) is a fast-growing consulting services company offering integrated IT, scientific, and strategic solutions for the Federal Government, large…” Source: RevenueBase Database · checked Sep 23, 2026
25	Benel Solutions	Strong evidence	Mclean, VA, United StatesHQ checked Sep 23, 2026	11-50	13 contacts →
	Strong evidence “IT solutions company focused on software strategy, consulting and development.” Source: RevenueBase Database · checked Sep 23, 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: big IT 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 big IT consulting firms.
Partial evidence: Its own public description names part of big IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big IT 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 89 big IT consulting firms based in Mclean, United States

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Big IT consulting firms based in Mclean, United States at a glance

As of Sep 23, 2026

40.1%Verified-email coverage

185.6Average contacts per company

11-50Median size (employees)

896.6%Largest-city concentration · New York

Sep 23, 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 89 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 big IT 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 Mclean, United States whose own description of what they do matches “big IT 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 big IT 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 big IT consulting firms, 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, 6,629 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 23, 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.

Big IT consulting firms 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 big IT 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 big IT consulting firms are there based in Mclean, United States?

RevenueBase identified 89 big IT consulting firms 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?

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

Which city has the most big IT consulting firms?

New York leads with 798 headquartered companies, followed by Houston (534) and Dallas (423).

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 6,629 verified decision-maker contacts tracked across these 89 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 23, 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.