Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 134 companies tracked

RevenueBase identified 134 big IT consulting firms headquartered in Reston, United States as of September 2026 and tracks 18,168 professional contacts across them, including 6,317 with verified work emails. Across the United States, New York is the largest hub for this category (798 companies); Reston has 134.

This list covers big IT consulting firms headquartered in Reston, 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

134Companies

18,168Contacts tracked

6,317Verified emails

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

Ranked by team size

Top 25 of 134 big IT consulting firms based in Reston, 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	ICF	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	5,001-10,000	9,459 contacts →
	Indirect evidence “ICF is a leading global solutions and technology provider.” Source: RevenueBase Database · checked Sep 23, 2026
2	Genpact Headstrong Capital Markets	Strong evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	10001+	3,109 contacts →
	Strong evidence “Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Source: RevenueBase Database · checked Sep 23, 2026
3	Systems Engineering Services Corporation Sesc	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	201-500	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 23, 2026
4	AIS Applied Information Sciences	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	501-1,000	701 contacts →
	Indirect evidence “AIS helps large commercial and federal clients accelerate innovation with security and compliance in mind.” Source: RevenueBase Database · checked Sep 23, 2026
5	1rivet	Strong evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	201-500	415 contacts →
	Strong evidence “1Rivet is an award-winning, international IT Strategy & Consulting firm headquartered in the Washington, D.C.” Source: RevenueBase Database · checked Sep 23, 2026
6	Excelacom	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	501-1,000	306 contacts →
	Partial evidence “Excelacom is a global Software and Consulting company headquartered in Reston, VA, just outside of Washington, D.C, with offices across North America and Europe and a Technology…” Source: RevenueBase Database · checked Sep 23, 2026
7	Dominion Consulting	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	278 contacts →
	Partial evidence “Dominion Consulting is now TeraThink.” Source: RevenueBase Database · checked Sep 23, 2026
8	Seneca Resources	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	201-500	186 contacts →
	Indirect evidence “Seneca Resources is an Information Technology and Engineering professional services firm supporting clients in the public and private sectors.” Source: RevenueBase Database · checked Sep 23, 2026
9	Esolutionsfirst	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	201-500	158 contacts →
	Partial evidence “eSolutionsFirst is a premier technology and talent solutions partner providing best-in-class IT solutions and staffing services that empower our clients to be market leaders.” Source: RevenueBase Database · checked Sep 23, 2026
10	Insigma INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	117 contacts →
	Partial evidence “Insigma Incorporation is an Information Technology provider delivering superior quality software development, consulting and staffing solutions to our client partners.” Source: RevenueBase Database · checked Sep 23, 2026
11	Intellibus	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	106 contacts →
	Indirect evidence “We are a team of passionate software engineers and entrepreneurs.” Source: RevenueBase Database · checked Sep 23, 2026
12	Pureintegration	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	105 contacts →
	Indirect evidence “The epitome of ‘punching above our weight’, pureIntegration is the secret weapon you may never have heard of.” Source: RevenueBase Database · checked Sep 23, 2026
13	Vivid Edge Corp	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	95 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
14	Silosmashers, INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	94 contacts →
	Partial evidence “SiloSmashers is an industry leading strategy, management, and technology consulting firm, with depth of knowledge and expertise, and a proven methodology that enables customers to…” Source: RevenueBase Database · checked Sep 23, 2026
15	Oteemo INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	88 contacts →
	Partial evidence “Oteemo is a technology and business transformation consulting firm that combines deep technical expertise with human-centered design principles to deliver innovative solutions.” Source: RevenueBase Database · checked Sep 23, 2026
16	Iotap INC	Strong evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	87 contacts →
	Strong evidence “IOTAP provides IT consulting and Software Services that enables companies to effectively connect, communicate and collaborate with their internal and external customers and peers…” Source: RevenueBase Database · checked Sep 23, 2026
17	Betterworld Technology Managed IT & Cybersecurity	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	81 contacts →
	Indirect evidence “Award Winning.” Source: RevenueBase Database · checked Sep 23, 2026
18	Nira Systems	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	81 contacts →
	Partial evidence “NIRA Systems is an IT solutions and services MNC with operations in United State and India.” Source: RevenueBase Database · checked Sep 23, 2026
19	Trillion Technology Solutions, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	76 contacts →
	Indirect evidence “Trillion Technology Solutions Inc.” Source: RevenueBase Database · checked Sep 23, 2026
20	Worldgate, LLC	Partial evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	71 contacts →
	Partial evidence “Worldgate LLC specializes in consulting services that support Information Technology demands in public sector agencies and school districts.” Source: RevenueBase Database · checked Sep 23, 2026
21	Navstar INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	70 contacts →
	Indirect evidence “Who We Are: Since Navstar has earned a reputation for excellence by listening to our customers, being easy to work with, and delivering on our commitments.” Source: RevenueBase Database · checked Sep 23, 2026
22	KAT Enterprise LLC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	69 contacts →
	Indirect evidence “KAT Enterprise is a trusted Microsoft Solutions Partner, delivering enterprise-grade digital transformation services across federal, commercial, and SMB sectors since 2015.” Source: RevenueBase Database · checked Sep 23, 2026
23	Oneglobe LLC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	51-200	58 contacts →
	Indirect evidence “OneGlobe LLC, is a small business incorporated in Virginia in 2005.” Source: RevenueBase Database · checked Sep 23, 2026
24	Datafy INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	201-500	56 contacts →
	Indirect evidence “For over a decade, Datafy Inc.” Source: RevenueBase Database · checked Sep 23, 2026
25	Federal Engineering, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 23, 2026	11-50	54 contacts →
	Indirect evidence “Federal Engineering is a leading, nationwide firm providing analysis, design, procurement, and implementation support services for public safety and public service organizations…” 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 134 big IT consulting firms based in Reston, United States

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

As of Sep 23, 2026

34.8%Verified-email coverage

135.6Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for Reston, so it is reported there. Company counts and contact totals on this page are exact for Reston, over 134 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 Reston, 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 Reston 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, 6,317 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 Reston, United States?

RevenueBase identified 134 big IT consulting firms headquartered in Reston, 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?

ICF, headquartered in Reston, tops this list with the largest team on record.

Which city in the United States has the most big IT consulting firms?

New York leads the United States with 798 headquartered companies, followed by Houston (534) and Dallas (423). Reston has 134.

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 6,317 verified decision-maker contacts tracked across these 134 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.