Company lists · Data refreshed September 2026

Top 19 IT infrastructure consulting firms based in Manassas, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 31 companies tracked

RevenueBase identified 31 IT infrastructure consulting firms headquartered in Manassas, United States as of September 2026 and tracks 503 professional contacts across them, including 224 with verified work emails. New York is the largest hub.

This list covers IT infrastructure consulting firms headquartered in Manassas, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

31Companies

503Contacts tracked

224Verified emails

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The 19 largest IT infrastructure consulting firms based in Manassas, United States

Ranked by team size

Top 19 of 31 IT infrastructure consulting firms based in Manassas, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Broadleaf, INCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	5,001-10,000	116
	“ASRC Federal has acquired Broadleaf, Inc, a leading information technology services company that provides cybersecurity, network engineering, cloud migration, training and program…” Source: company website · checked Sep 4, 2026
2	Echelon Services, LLCPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	201-500	99
	“Echelon Services provides cutting-edge technology consulting services to federal agencies and industry partners that modernize, secure and fundamentally transform how the U.S.” Source: company website · checked Sep 4, 2026
3	Optimo Information TechnologyPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	51-200	76
	“OPTiMO is an IT services provider with areas of expertise spanning design and development, cloud, data, engineering and integration, and innovation solutions and research.” Source: company website · checked Sep 4, 2026
4	F1 Cloud SolutionsPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	31
	“F1 Cloud Solutions is an Information Technology (IT) Solutions Provider.” Source: company website · checked Sep 4, 2026
5	First Column ITPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	28
	“First Column IT is a full-service solutions provider, offering computer network consultation and services.” Source: company website · checked Sep 4, 2026
6	InfogravityPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	25
	“InfoGravity, LLC is the go-to IT Systems Integrator in Virginia that provides par excellence Advisory Services, Transformation Services, and Managed Services underpinning a…” Source: company website · checked Sep 4, 2026
7	Defense Engineering INCPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	51-200	22
	“For over two decades, Defense Engineering Inc.(DEi) has delivered innovative enterprise IT engineering and mission-focused technology solutions to the Federal Government.” Source: company website · checked Sep 4, 2026
8	Level1 Solution, INCPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	20
	“Level1 Solution, Inc a full service Managed IT and Security Provider (MSP), our mission is to simplify the complexities of IT, providing you with the peace of mind that your…” Source: company website · checked Sep 4, 2026
9	Matrix Computer ConsultingPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	17
	“Started in Matrix Computer Consulting is a complete technology solution provider.” Source: company website · checked Sep 4, 2026
10	Zipzap ITPartial evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	12
	“Reimagine a world where technology knows no boundaries-a future driven by strategic innovation and seamless IT integration.” Source: company website · checked Sep 4, 2026
11	Illum AdvisorsIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	10
	“iLLÜM helps growing organizations who need to reduce risk, gain insight, and deliver value at velocity but don’t have time or money to waste.” Source: company website · checked Sep 4, 2026
12	JPI Technology LLCStrong evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	7
	“JPI Technology LLC is an IT services, Contracting & Consulting company based out of 9720 CAPITAL COURT, STE 301, Manassas, Virginia, United States.” Source: company website · checked Sep 4, 2026
13	EAW Tech, LLCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	4
	Source: company website · checked Sep 4, 2026
14	Slice, LLCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	4
	“Helping customers understand, adopt and implement cloud technologies; building innovative cloud-based, cloud-first solutions; applying a wealth of developer expertise to customer…” Source: company website · checked Sep 4, 2026
15	North American Digital Communications INCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	4
	Source: company website · checked Sep 4, 2026
16	GMC Tek, LLCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	3
	“GMC TEK is a Minority Women Owned Small Business, GSA schedule 70, SWaM and NOVA PTAC Member registered company.” Source: company website · checked Sep 4, 2026
17	TTSIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	11-50	2
	“Total Technology Solutions, LLC (TTS), Headquartered in Manassas, Virginia, is a certified SBA 8(a) Small Business, SBA Service-Disabled Veteran-owned Small Business (SDVOSB), and…” Source: company website · checked Sep 4, 2026
18	Sherman NetworksIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	2
	Source: company website · checked Sep 4, 2026
19	Grayson Digital, LLCIndirect evidence	Manassas, VA, United StatesHQ checked Sep 4, 2026	1-10	1
	“Since 2005 Grayson Digital, LLC has been providing consultation for a wide variety of clients from Washington, D.C.” Source: company website · checked Sep 4, 2026

Showing 19 of 31 IT infrastructure consulting firms based in Manassas, United States

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IT infrastructure consulting firms based in Manassas, United States at a glance

As of Sep 4, 2026

11-50Median size (employees)

New YorkLargest hub · 807 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

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 Manassas, over 31 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 IT infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Manassas, United States whose own description of what they do matches “IT infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Manassas 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 an evidence 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, 224 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 4, 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.

IT infrastructure consulting firms by metro in the United States

Frequently asked

How many IT infrastructure consulting firms are there based in Manassas, United States?

RevenueBase identified 31 IT infrastructure consulting firms headquartered in Manassas, 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?

Broadleaf, INC, headquartered in Manassas, tops this list with the largest team on record.

Which city has the most IT infrastructure consulting firms?

New York leads with 807 headquartered companies, followed by Houston (522) and Atlanta (402).

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 224 verified decision-maker contacts tracked across these 31 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 4, 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 SmartSearch, 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.