Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 68 companies tracked

RevenueBase identified 68 big IT consulting firms headquartered in Vienna, United States as of September 2026 and tracks 3,787 professional contacts across them, including 934 with verified work emails. Across the United States, New York is the largest hub for this category (798 companies); Vienna has 68.

This list covers big IT consulting firms headquartered in Vienna, 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

68Companies

3,787Contacts tracked

934Verified emails

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

Ranked by team size

Top 25 of 68 big IT consulting firms based in Vienna, 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	10pearls	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “10Pearls is an AI-native, award-winning global digital engineering partner helping businesses innovate, modernize & accelerate digital transformation As an end-to-end digital…” Source: RevenueBase Database · checked Sep 23, 2026
2	Indus Group INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	201-500	293 contacts →
	Partial evidence “Indus Group Inc is a Software Development and Consulting Company founded by proficient performers in the technical solutions and consulting optimization space.” Source: RevenueBase Database · checked Sep 23, 2026
3	Radiant Digital	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	201-500	226 contacts →
	Indirect evidence “Radiant Digital delivers solutions that help our clients become more agile, efficient, competitive, and innovative.” Source: RevenueBase Database · checked Sep 23, 2026
4	Horizon Industries, Limited	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	201-500	143 contacts →
	Partial evidence “Horizon Industries is an IT services corporation serving Clients across the U.S.” Source: RevenueBase Database · checked Sep 23, 2026
5	Accubits Technologies INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	501-1,000	130 contacts →
	Partial evidence “Accubits Technologies is a full-service software development and technology consulting company that offers product development and digital transformation services to Governments…” Source: RevenueBase Database · checked Sep 23, 2026
6	Itcon Services	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	127 contacts →
	Partial evidence “ITCON Services is a dynamic consulting company that provides innovative technology and management solutions to its customers.” Source: RevenueBase Database · checked Sep 23, 2026
7	Stopso	Strong evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	94 contacts →
	Strong evidence “Strategic Operational Solutions, Inc,(STOPSO) is an IT strategy and management consulting firm.” Source: RevenueBase Database · checked Sep 23, 2026
8	DEVFI	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	201-500	93 contacts →
	Indirect evidence “We’re a digital technology company delivering innovative, high-quality, new-age, and affordable technology solutions.” Source: RevenueBase Database · checked Sep 23, 2026
9	Consult America	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	90 contacts →
	Indirect evidence “Consult America Inc.” Source: RevenueBase Database · checked Sep 23, 2026
10	Heartland Consulting	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	80 contacts →
	Partial evidence “Heartland Consulting provides management consulting, information technology, and financial management services to the U.S.” Source: RevenueBase Database · checked Sep 23, 2026
11	Alltech International, INC	Partial evidence	Vienna, United StatesHQ checked Sep 23, 2026	51-200	46 contacts →
	Partial evidence “Alltech is an award winning provider of IT services headquartered in the Washington DC Metro area with nationwide project capabilities.” Source: RevenueBase Database · checked Sep 23, 2026
12	KNZ Solutions, INC	Strong evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	41 contacts →
	Strong evidence “KNZ is a global IT consulting company.” Source: RevenueBase Database · checked Sep 23, 2026
13	EDC Consulting LLC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	39 contacts →
	Partial evidence “Headquartered in Tysons Corner, Virginia, EDC Consulting LLC (EDC) is a professional services company that provides industry-leading Business Systems and Information Technology…” Source: RevenueBase Database · checked Sep 23, 2026
14	Conceptsit, INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	38 contacts →
	Partial evidence “Concepts IT is a well established company in delivering Software IT solutions to leading clients in the commercial and government sectors.” Source: RevenueBase Database · checked Sep 23, 2026
15	Supreme Tech Solutions LLC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	38 contacts →
	Partial evidence “Supreme Tech Solutions, LLC (STS) was founded in 2003, in order to bridge the gap for Automated Data Processing (ADP) consulting services to its corporate clients.” Source: RevenueBase Database · checked Sep 23, 2026
16	Dayblink Consulting	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	29 contacts →
	Partial evidence “DayBlink Consulting provides cyber security, applied automation, cloud enablement, and strategic execution solutions to Fortune 500 companies, and pro bono consulting to…” Source: RevenueBase Database · checked Sep 23, 2026
17	M1 Technology LLC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	51-200	22 contacts →
	Partial evidence “M1 Technology, LLC is a technology consulting firm specializing in delivering quality software systems to meet our client's mission needs.” Source: RevenueBase Database · checked Sep 23, 2026
18	Omnisolve INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Partial evidence “OmniSolve is a technology services and management consulting company that is built around the concept of giving our clients value and helping them to better achieve their goals.” Source: RevenueBase Database · checked Sep 23, 2026
19	Wit, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	17 contacts →
	Indirect evidence “WIT Inc is a mission-oriented service provider of solutions that are essential for all leading industries today.” Source: RevenueBase Database · checked Sep 23, 2026
20	IP Consulting, INC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	15 contacts →
	Partial evidence “Named to the INC from 2014 to 2017, IP Consulting, Inc.(IPC) is one of the fastest-growing privately held companies in the United States.” Source: RevenueBase Database · checked Sep 23, 2026
21	SLS Solutions	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	13 contacts →
	Indirect evidence “SLS Solutions Inc, is a fast growing SBA 8(a), 8(a) STARS GWAC, MBE, WBE, WOSB vendor providing industry leading solutions that enable organizations achieve their mission and…” Source: RevenueBase Database · checked Sep 23, 2026
22	Intellizant	Partial evidence	Vienna, United StatesHQ checked Sep 23, 2026	11-50	12 contacts →
	Partial evidence “Intellizant is a management and technology consulting firm solving our clients most challenging problems and enabling them to become highly effective and efficient government…” Source: RevenueBase Database · checked Sep 23, 2026
23	Base Solutions LLC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	1-10	11 contacts →
	Indirect evidence “In today’s global business market, advancements in technology play a significant role in the success of every business.” Source: RevenueBase Database · checked Sep 23, 2026
24	Integration Resolve, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “IntegrationResolve is a professional services firm with focused capabilities:(1) helping clients integrate and improve their information systems,(2) leveraging technology to…” Source: RevenueBase Database · checked Sep 23, 2026
25	Zvolvant Solutions	Partial evidence	Vienna, VA, United StatesHQ checked Sep 23, 2026	11-50	10 contacts →
	Partial evidence “Zvolvant Solutions is an SBA 8(a) certified information technology services firm committed to transforming IT in the Federal space.” 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 68 big IT consulting firms based in Vienna, United States

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

As of Sep 23, 2026

24.7%Verified-email coverage

55.7Average 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

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Vienna, so it is reported there. Company counts and contact totals on this page are exact for Vienna, over 68 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 Vienna, 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 Vienna 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, 934 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 Vienna, United States?

RevenueBase identified 68 big IT consulting firms headquartered in Vienna, 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?

10pearls, headquartered in Vienna, 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). Vienna has 68.

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 934 verified decision-maker contacts tracked across these 68 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.