Company lists · Data refreshed September 2026
Top 25 IT infrastructure and security companies based in Washington, United States
RevenueBase identified 133 IT infrastructure and security companies headquartered in Washington, United States as of September 2026 and tracks 6,142 professional contacts across them, including 406 with verified work emails. Across the United States, New York is the largest hub for this category (457 companies); Washington has 133.
This list covers IT infrastructure and security companies headquartered in Washington, 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 27, 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.
The 25 largest IT infrastructure and security companies based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 576 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 314 contacts → | ||||
Indirect evidence “With over 30 years of hands-on experience, Computer World Services Corp.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 108 contacts → | ||||
Indirect evidence “Since 1996, Networking For Future, Inc.(NFF) has been engineering the backbone of mission-critical systems for government and enterprise clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 79 contacts → | ||||
Indirect evidence “You need more than a contractor.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 72 contacts → | ||||
Partial evidence “As organizations navigate the demands of today’s fast-moving IT landscape, Dantech stands as a trusted partner with the expertise to guide, implement, and optimize technology…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 47 contacts → | ||||
Partial evidence “Cascades Technologies is a Professional Consulting and IT Services firm with a commitment to personal and profession integrity.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Partial evidence “Avid Systems LLC is a woman-owned Information Technology Services firm based in Washington, DC, with over 20 years of proven expertise in delivering transformative IT solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 30 contacts → | ||||
Indirect evidence “Compass Solutions, LLC is a leading Information Technology company that delivers technology solutions that fit the business model of its clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 28 contacts → | ||||
Partial evidence “At JSOC IT, we don’t just offer cybersecurity solutions-we build resilient, secure environments tailored to your business needs.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 26 contacts → | ||||
Partial evidence “iP-PLUS CONSULTING is an IT solutions company that focuses on providing high quality professionals, innovative technical solutions, and delivering exceptional service support to…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Partial evidence “Biztec helps organizations simplify technology, strengthen security, and operate with confidence.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 22 contacts → | ||||
Indirect evidence “Practical Solutions, Inc.(PSI) was founded on the principle that successful organizations have a balanced operation of technology, engineering, and management.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Indirect evidence “Genesys Impact is a Technology Solutions Integrator & MSP firm, CMMC L2, ISO 9001:2015 and ISO/IEC 27001:2022 certified, helping federal agencies, healthcare systems, data…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 20 contacts → | ||||
Partial evidence “JRH Consultants is an Information Technology company that provides cost effective services and solutions in Operations Management, Cyber Security Services, Cloud Integration and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Partial evidence “Our mission is to enable and drive our clients’ mission through secure managed IT.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 16 contacts → | ||||
Indirect evidence “Keeping your operations moving and your network secure is our priority because we know that’s your priority.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 16 contacts → | ||||
Indirect evidence “The Efiia Group delivers cybersecurity solutions for Government.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 contacts → | ||||
Partial evidence “ABOUT US Millennium Enterprise Corporation (MEC) delivers mission-critical digital infrastructure and technology solutions for government, education, and nonprofit organizations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Partial evidence “BizTech Fusion is a global IT and business consulting firm, providing tailored solutions that align technology with strategic business goals.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Partial evidence “InGuardians, Inc is an independent information security consulting company based in Washington D.C.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Indirect evidence “PCN Strategies mission is to make everything convenient and streamlined for you.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Indirect evidence “AI Consultation and Implementation | Cloud Migration and Maintenance | Cybersecurity Consulting | Data Analytics and Business Intelligence | Regulatory Compliance and Data…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Strong evidence “Kacidy IT Solutions Simplified - Cloud Computing, Security, IS Audit and Compliance Services, Corporate Training, and Project Management.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Partial evidence “Artisys Corporation is an ethnic minority-owned, Service-Disabled Veteran-Owned Business (SDVOB) with over 35 years of experience delivering transformative IT consulting and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: IT infrastructure and security companies. 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 IT infrastructure and security companies.
- Partial evidence
- Its own public description names part of IT infrastructure and security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT infrastructure and security companies. 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 133 IT infrastructure and security companies based in Washington, United States
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IT infrastructure and security companies based in Washington, United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 133 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 and security companies, 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 Washington, United States whose own description of what they do matches “IT infrastructure and security companies”. 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 IT infrastructure and security companies), 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 IT infrastructure and security companies, and records with no verified work email. Companies headquartered outside Washington 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, 406 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 27, 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 and security companies by metro in the United States
- IT infrastructure and security companies in New York457
- IT infrastructure and security companies in Houston320
- IT infrastructure and security companies in Dallas216
- IT infrastructure and security companies in Atlanta214
- IT infrastructure and security companies in Austin208
- IT infrastructure and security companies in Chicago207
- IT infrastructure and security companies in Miami194
- IT infrastructure and security companies in Los Angeles161
- IT infrastructure and security companies in San Diego133
- IT infrastructure and security companies in San Francisco130
- IT infrastructure and security companies in Tampa130
- IT infrastructure and security companies in Denver114
- IT infrastructure and security companies in Charlotte113
- IT infrastructure and security companies in Orlando102
- IT infrastructure and security companies in Phoenix98
- IT infrastructure and security companies in Irvine97
- IT infrastructure and security companies in San Jose96
- IT infrastructure and security companies in San Antonio94
- IT infrastructure and security companies in Las Vegas93
- IT infrastructure and security companies in Plano86
- IT infrastructure and security companies in Arlington85
- IT infrastructure and security companies in Columbia82
- IT infrastructure and security companies in Seattle79
- IT infrastructure and security companies in Boston74
- IT infrastructure and security companies in Frisco73
- IT infrastructure and security companies in Sheridan73
- IT infrastructure and security companies in Indianapolis69
- IT infrastructure and security companies in Wilmington69
- IT infrastructure and security companies in Herndon68
- IT infrastructure and security companies in Irving68
- IT infrastructure and security companies in Fort Lauderdale63
- IT infrastructure and security companies in Richmond63
- IT infrastructure and security companies in Reston62
- IT infrastructure and security companies in Ashburn61
- IT infrastructure and security companies in Columbus61
- IT infrastructure and security companies in Fairfax61
- IT infrastructure and security companies in Raleigh61
- IT infrastructure and security companies in Portland60
- IT infrastructure and security companies in Alpharetta56
- IT infrastructure and security companies in Mclean56
- IT infrastructure and security companies in Alexandria55
- IT infrastructure and security companies in Minneapolis55
- IT infrastructure and security companies in Cincinnati53
- IT infrastructure and security companies in Baltimore50
- IT infrastructure and security companies in Nashville48
- IT infrastructure and security companies in Scottsdale48
- IT infrastructure and security companies in Jacksonville47
- IT infrastructure and security companies in Newark46
- IT infrastructure and security companies in Pittsburgh46
- IT infrastructure and security companies in Rockville45
- IT infrastructure and security companies in Sacramento45
- IT infrastructure and security companies in Boca Raton43
- IT infrastructure and security companies in Louisville43
- IT infrastructure and security companies in Salt Lake City41
- IT infrastructure and security companies in Dover40
- IT infrastructure and security companies in Santa Clara39
- IT infrastructure and security companies in Springfield39
- IT infrastructure and security companies in Greenville38
- IT infrastructure and security companies in Philadelphia38
- IT infrastructure and security companies in Princeton38
- IT infrastructure and security companies in Troy38
- IT infrastructure and security companies in Kansas City36
- IT infrastructure and security companies in Leesburg36
- IT infrastructure and security companies in Albuquerque35
- IT infrastructure and security companies in Naperville35
- IT infrastructure and security companies in Schaumburg35
- IT infrastructure and security companies in Birmingham34
- IT infrastructure and security companies in Knoxville34
- IT infrastructure and security companies in Oklahoma City34
- IT infrastructure and security companies in Colorado Springs33
- IT infrastructure and security companies in Fort Worth33
- IT infrastructure and security companies in Omaha33
- IT infrastructure and security companies in Baton Rouge32
- IT infrastructure and security companies in St Louis32
- IT infrastructure and security companies in Tucson32
- IT infrastructure and security companies in Chantilly31
- IT infrastructure and security companies in Rochester30
- IT infrastructure and security companies in Vienna30
- IT infrastructure and security companies in Cleveland29
- IT infrastructure and security companies in Grand Rapids29
- IT infrastructure and security companies in West Palm Beach29
- IT infrastructure and security companies in Bellevue28
- IT infrastructure and security companies in Huntsville28
- IT infrastructure and security companies in Mckinney28
- IT infrastructure and security companies in Manassas27
- IT infrastructure and security companies in Pleasanton27
- IT infrastructure and security companies in Sterling27
- IT infrastructure and security companies in Fremont26
- IT infrastructure and security companies in Gaithersburg26
- IT infrastructure and security companies in Reno26
- IT infrastructure and security companies in Tulsa26
- IT infrastructure and security companies in Duluth25
- IT infrastructure and security companies in Marietta25
- IT infrastructure and security companies in Overland Park25
- IT infrastructure and security companies in Richardson25
- IT infrastructure and security companies in Sarasota25
- IT infrastructure and security companies in Virginia Beach25
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 IT infrastructure and security companies, 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 IT infrastructure and security companies are there based in Washington, United States?
RevenueBase identified 133 IT infrastructure and security companies headquartered in Washington, 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?
Vtech Solution INC, headquartered in Washington, tops this list with the largest team on record.
Which city in the United States has the most IT infrastructure and security companies?
New York leads the United States with 457 headquartered companies, followed by Houston (320) and Dallas (216). Washington has 133.
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 406 verified decision-maker contacts tracked across these 133 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 27, 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.
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