Company lists · Data refreshed September 2026

Top 25 Federal government consulting firms based in Mclean, United States

Name: Federal government 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 21, 2026 69 companies tracked

RevenueBase identified 69 federal government consulting firms headquartered in Mclean, United States as of September 2026 and tracks 3,844 professional contacts across them, including 1,293 with verified work emails. Washington is the largest hub.

This list covers federal government 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 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

69Companies

3,844Contacts tracked

1,293Verified emails

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The 25 largest federal government consulting firms based in Mclean, United States

Ranked by team size

Top 25 of 69 federal government consulting firms based in Mclean, 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 government 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	American Systems	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,899 contacts →
	Strong evidence “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Source: RevenueBase Database · checked Sep 21, 2026
2	Zachary Piper Solutions	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	236 contacts →
	Partial evidence “Zachary Piper Solutions (ZPS) provides technical and professional services in support of the United States government across six key sectors: Intelligence, Defense, Energy…” Source: RevenueBase Database · checked Sep 21, 2026
3	Validatek, INC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 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 21, 2026
4	Be, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	176 contacts →
	Indirect evidence “BE is a trusted partner on missions of vital importance to our customers, the nation and the world.” Source: RevenueBase Database · checked Sep 21, 2026
5	Integral Federal, INC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	153 contacts →
	Partial evidence “Integral partners with federal defense, intelligence, and civilian leaders to tackle their most important challenges and deliver transformative solutions.” Source: RevenueBase Database · checked Sep 21, 2026
6	E3 Federal Solutions	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	501-1,000	72 contacts →
	Indirect evidence “E3/Sentinel, a NewSpring Holdings company, is a mission-focused services and solutions company headquartered in McLean, VA.” Source: RevenueBase Database · checked Sep 21, 2026
7	Trowbridge & Trowbridge Llc, An Agile Defense Company	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	69 contacts →
	Indirect evidence “Trowbridge & Trowbridge, An Agile Defense Company, delivers transformational technology solutions that anticipate emerging requirements, increase operational efficiencies and…” Source: RevenueBase Database · checked Sep 21, 2026
8	Sigma Health Consulting, LLC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Strong evidence “Sigma Health Consulting, LLC (Sigma) is a woman-owned, veteran-owned small business (WOSB, VOSB) with leadership that has over 30 years of experience in the federal sector…” Source: RevenueBase Database · checked Sep 21, 2026
9	OCT Consulting LLC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Partial evidence “OCT Consulting LLC is a Small Business providing professional services and information technology solutions to U.S.” Source: RevenueBase Database · checked Sep 21, 2026
10	Mfgs, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
11	Blackwatch International Corporation	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	45 contacts →
	Indirect evidence “Blackwatch is a small business headquartered in Mclean, VA with offices in O'Fallon, IL and Carmichael, CA.” Source: RevenueBase Database · checked Sep 21, 2026
12	Creative Systems And Consulting, Part Of ICF	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	36 contacts →
	Strong 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 21, 2026
13	Leading Path Consulting	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 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 21, 2026
14	Counterpointe Solutions, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	11-50	23 contacts →
	Indirect evidence “Counterpointe is a CMMI Level 3 certified.” Source: RevenueBase Database · checked Sep 21, 2026
15	Stratitia, INC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	23 contacts →
	Partial evidence “Stratitia is a customer-driven professional services and management consulting firm offering strategic consulting, operational support, logistics and technology enablement to…” Source: RevenueBase Database · checked Sep 21, 2026
16	Mega-Tech, INC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	11-50	19 contacts →
	Strong evidence “Award-winning, woman-owned management consulting firm supporting the Federal, state, and local governments across the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
17	Sunrays International	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	18 contacts →
	Partial evidence “Sunrays International is a globally-integrated consulting, program management and shared services provider.” Source: RevenueBase Database · checked Sep 21, 2026
18	Viateq Corporation	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Strong evidence “VIATEQ is a proactive provider of collaborative solutions for federal government agencies.” Source: RevenueBase Database · checked Sep 21, 2026
19	Skysoft INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 21, 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 21, 2026
20	Technalink	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	16 contacts →
	Partial 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 21, 2026
21	Axis Management Group	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 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 21, 2026
22	Fedsavvy Strategies	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	1-10	13 contacts →
	Partial evidence “Understanding the federal market requires knowledge of ever-changing policies, contracting trends, risks, and a unique set of barriers to entry.” Source: RevenueBase Database · checked Sep 21, 2026
23	Nuvologic Consulting	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “NuvoLogic Consulting focuses on financial management and information technology solutions for private and public sector clients.” Source: RevenueBase Database · checked Sep 21, 2026
24	Occam Solutions, INC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	51-200	11 contacts →
	Partial evidence “Occam Solutions is a leading provider of consulting system integration, and mission support services.” Source: RevenueBase Database · checked Sep 21, 2026
25	Fuel Consulting, LLC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong evidence “Fuel Consulting, LLC is an elite management-consulting firm specializing in powering organizational change in demanding times in the federal, nonprofit, and commercial sectors.” 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 government 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 government consulting firms.
Partial evidence: Its own public description names part of federal government 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 government 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 69 federal government consulting firms based in Mclean, United States

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Federal government consulting firms based in Mclean, United States at a glance

As of Sep 21, 2026

33.6%Verified-email coverage

55.7Average contacts per company

11-50Median size (employees)

533.3%Largest-city concentration · Washington

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 69 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 government 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 “federal government 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 government 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 government 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, 1,293 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 government 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 federal government 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 government consulting firms are there based in Mclean, United States?

RevenueBase identified 69 federal government 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?

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

Which city has the most federal government consulting firms?

Washington leads with 368 headquartered companies, followed by Arlington (127) and Reston (91).

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 1,293 verified decision-maker contacts tracked across these 69 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.