Company lists · Data refreshed September 2026

Top 25 Software engineering firms based in Mclean, United States

Name: Software engineering 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 6, 2026 103 companies tracked

RevenueBase identified 103 software engineering firms headquartered in Mclean, United States as of September 2026 and tracks 17,134 professional contacts across them, including 6,870 with verified work emails. New York is the largest hub.

This list covers software engineering 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 6, 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 6, 2026 86% judged on-target in blind review

103Companies

17,134Contacts tracked

6,870Verified emails

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The 25 largest software engineering firms based in Mclean, United States

Ranked by team size

Top 25 of 103 software engineering firms based in Mclean, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software engineering 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 6, 2026	10001+	12,815 contacts →
	“Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: company website · checked Sep 6, 2026
2	Groundswell	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	342 contacts →
	“Groundswell is a specialized, highly agile systems integrator delivering advanced technology solutions as a trusted mission partner to federal agencies.” Source: company website · checked Sep 6, 2026
3	AD HOC LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	501-1,000	333 contacts →
	“Ad Hoc is a digital services company that helps the federal government better serve people.” Source: company website · checked Sep 6, 2026
4	Rofous	Partial evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	5,001-10,000	267 contacts →
	“Rofous Software is now part of GlobalLogic, a leading R&D software provider based in the U.S.” Source: company website · checked Sep 6, 2026
5	Validatek, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	224 contacts →
	“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: company website · checked Sep 6, 2026
6	Cybermedia Technologies, LLC Ctec	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	223 contacts →
	“We modernize legacy infrastructure, secure mission-critical systems and design digital experiences that impact millions of federal workers & American citizens every day.” Source: company website · checked Sep 6, 2026
7	Pragmatics, LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	209 contacts →
	“Pragmatics was acquired by Integral Federal, Inc.” Source: company website · checked Sep 6, 2026
8	Sierra7, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	200 contacts →
	“Sierra7 is a premier technology solutions and business process outsourcing firm serving the needs of government and commercial clients.” Source: company website · checked Sep 6, 2026
9	Bart & Associates, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	1,001-5,000	187 contacts →
	“Headquartered in McLean, Va, B&A is a leading information technology systems integrator providing solutions through the following service offerings: Modernization &…” Source: company website · checked Sep 6, 2026
10	A-Tek, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	159 contacts →
	“As a trusted services and solutions provider, A-TEK, Inc.” Source: company website · checked Sep 6, 2026
11	Princeton Information	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	1,001-5,000	157 contacts →
	“Princeton Information is one of the nation's top privately-held IT consulting and solutions firms, in business since 1985.” Source: company website · checked Sep 6, 2026
12	Humantouch, LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	110 contacts →
	“We bridge the gap between people & technology.” Source: company website · checked Sep 6, 2026
13	Saliense	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	107 contacts →
	“Saliense is a high-end Technology Solutions provider based out of Tysons Corner, VA.” Source: company website · checked Sep 6, 2026
14	Bana Solutions, LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	11-50	80 contacts →
	“Bana Solutions is an innovative, high-energy and creative technology company focused on enterprise-class products and services which, when tactically fused, become catalysts for…” Source: company website · checked Sep 6, 2026
15	Dexian IT Solutions	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	1,001-5,000	62 contacts →
	“Dexian IT Solutions, a unit of Dexian, is an outcome-driven service and solutions partner that serves enterprises across their Information Technology operations.” Source: company website · checked Sep 6, 2026
16	Eway Corp	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	62 contacts →
	“eWay Corp is a global IT Consulting company with a simple motto: Forward.” Source: company website · checked Sep 6, 2026
17	Zenpoint Solutions LLC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	60 contacts →
	“ZenPoint is a small, 8(a) certified, woman-owned IT Services company.” Source: company website · checked Sep 6, 2026
18	Technology Ventures	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	54 contacts →
	“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: company website · checked Sep 6, 2026
19	Omnisystems, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	53 contacts →
	“OmniSystems delivers state-of-the-art solutions, specializing in the development and integration of web-enabled systems.” Source: company website · checked Sep 6, 2026
20	22nd Century Software Solutions	Partial evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	51-200	48 contacts →
	“22nd Century Software Solutions is Software product subsidy of 22nd Century Technologies Inc,(22nd), developing innovative IT solutions and futuristic products for US Government.” Source: company website · checked Sep 6, 2026
21	Mfgs, INC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	201-500	47 contacts →
	Source: company website · checked Sep 6, 2026
22	Main Digital	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	11-50	47 contacts →
	“Main Digital is a consultancy that transforms and optimizes business and government.” Source: company website · checked Sep 6, 2026
23	A1fed	Partial evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	11-50	47 contacts →
	“A1FED brings the expertise in understanding the requirements and the customer data and delivering quality software to our clients.” Source: company website · checked Sep 6, 2026
24	Millsapps, Ballinger & Associates Mb&a	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	11-50	44 contacts →
	“Millsapps, Ballinger & Associates (MB & A) is a full life cycle management consulting company focusing on helping organizations achieve their goals and increase organizational…” Source: company website · checked Sep 6, 2026
25	Artemis Consulting	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	501-1,000	39 contacts →
	“Artemis Consulting, a wholly owned subsidiary of ARETUM, is an IT Services and Management Consulting firm in the Washington D.C.” Source: company website · checked Sep 6, 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: software engineering 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 software engineering firms.
Partial evidence: Its own public description names part of software engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software engineering 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 103 software engineering firms based in Mclean, United States

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Software engineering firms based in Mclean, United States at a glance

As of Sep 6, 2026

40.1%Verified-email coverage

166.3Average contacts per company

11-50Median size (employees)

1034.0%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 103 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 software engineering 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 “software engineering 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 software engineering 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 software engineering 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, 6,870 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 6, 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.

Software engineering 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 software engineering 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 software engineering firms are there based in Mclean, United States?

RevenueBase identified 103 software engineering 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 software engineering firms?

New York leads with 1065 headquartered companies, followed by Houston (648) and Austin (633).

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 6,870 verified decision-maker contacts tracked across these 103 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 6, 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.