Company lists · Data refreshed September 2026
Top 25 Defense IT consulting firms based in San Diego, United States
RevenueBase identified 91 defense IT consulting firms headquartered in San Diego, United States as of September 2026 and tracks 3,561 professional contacts across them, including 751 with verified work emails. Across the United States, Washington is the largest hub for this category (282 companies); San Diego has 91.
This list covers defense IT consulting firms headquartered in San Diego, 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 28, 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 defense IT consulting firms based in San Diego, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 676 contacts → | ||||
Indirect evidence “Epsilon Systems is a 100% employee-owned professional and technical services company founded in 1998 and headquartered in San Diego.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 414 contacts → | ||||
Partial evidence “Leveraging three decades of experience, Tapestry Solutions is a global provider of information management software and services for defense, government and commercial customers.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 402 contacts → | ||||
Indirect evidence “Inspired Employees.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 210 contacts → | ||||
Indirect evidence “Creating extraordinary solutions through innovative software.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 148 contacts → | ||||
Indirect evidence “AUSGAR is a company of smart, innovative technical team members who can out-think problems faced by our customers in the cybersecurity, experimentation and engineering services…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 125 contacts → | ||||
Indirect evidence “IntegrITS is a veteran-owned small business (VOSB) providing comprehensive business and technology solutions to our clients with superior customer service, cost-effective…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 110 contacts → | ||||
Partial evidence “Artemis Consulting is a small, woman-owned business, founded in 2005, and headquartered in San Diego, CA.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 108 contacts → | ||||
Partial evidence “SOLUTE, a Sigma defense company, is headquartered in San Diego, California with a presence in many major military areas.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 94 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 89 contacts → | ||||
Partial evidence “Since 1991, Nth Generation has provided industry leading, consultative IT services, encompassing a suite of IT and security solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 81 contacts → | ||||
Partial evidence “Sentek Global is the firm of choice for spearheading and supporting government and commercial IT programs.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 72 contacts → | ||||
Indirect evidence “ODME Solutions, LLC, Head Quartered in San Diego, CA.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 70 contacts → | ||||
Indirect evidence “The Marlin Alliance, Inc.(Marlin) delivers digital transformation and innovative technical solutions across military, government, and commercial sectors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 56 contacts → | ||||
Partial evidence “Your organization requires IT to help it drive innovation, profitability, and security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 55 contacts → | ||||
Partial evidence “In business since 1984, Blue Tech is an IT solutions company dedicated to being responsive and thorough, upholding the highest standards of integrity in our relationships with…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 46 contacts → | ||||
Partial evidence “Providing the Most Innovative and Intelligent Defense Available With the growth and evolution of cyber threats, cybersecurity has been thrust into the forefront of modern…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 41 contacts → | ||||
Partial evidence “For more than 25 years, DeVine Consulting has partnered with federal agencies to advance missions through innovative technology, technical expertise, and trusted collaboration.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 40 contacts → | ||||
Partial evidence “Infracore is a best-in-class Cybersecurity and IT Support Services firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 contacts → | ||||
Indirect evidence “Commissioned in 2010 to deliver quality project management support services, business information technology and C5I Systems Engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 40 contacts → | ||||
Indirect evidence “TRABUS is a minority-owned, Service-Disabled Veteran-Owned Small Business (SDVOSB) headquartered in San Diego, California with regional offices in the National Capitol Region.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Indirect evidence “X-Feds is a Small Business headquartered in San Diego, CA with satellite offices located in Norfolk, Virginia; Charleston, South Carolina; Crane, Indiana and Washington, DC.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 22 contacts → | ||||
Partial evidence “Strategos Consulting was formed in 2008, to identify and ultimately provide usable technological solutions to the United States Government and its partners in the global effort to…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 20 contacts → | ||||
Indirect evidence “Founded in 2003, Conde Group, Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 19 contacts → | ||||
Strong evidence “CDM Technology is a customer-focused, premier provider of IT consulting, contracting and recruiting solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 13 contacts → | ||||
Strong evidence “IT Mentor Group, Inc.(ITMG) is located in San Diego, California and provides IT consulting, technical training, staffing, and contracting services around the globe.” Source: RevenueBase Database · checked Sep 28, 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: defense 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 defense IT consulting firms.
- Partial evidence
- Its own public description names part of defense 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 defense 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 91 defense IT consulting firms based in San Diego, United States
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Defense IT consulting firms based in San Diego, United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 91 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 defense 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 San Diego, United States whose own description of what they do matches “defense 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 defense 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 defense IT consulting firms, and records with no verified work email. Companies headquartered outside San Diego 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, 751 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 28, 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.
Defense IT consulting firms by metro in the United States
- Defense IT consulting firms in Washington282
- Defense IT consulting firms in Reston186
- Defense IT consulting firms in New York179
- Defense IT consulting firms in Arlington162
- Defense IT consulting firms in Atlanta153
- Defense IT consulting firms in Herndon136
- Defense IT consulting firms in Alexandria130
- Defense IT consulting firms in Mclean130
- Defense IT consulting firms in Houston127
- Defense IT consulting firms in Austin114
- Defense IT consulting firms in Fairfax114
- Defense IT consulting firms in Columbia109
- Defense IT consulting firms in Vienna103
- Defense IT consulting firms in Dallas102
- Defense IT consulting firms in Chantilly99
- Defense IT consulting firms in Miami94
- Defense IT consulting firms in Ashburn92
- Defense IT consulting firms in Chicago92
- Defense IT consulting firms in Huntsville88
- Defense IT consulting firms in Tampa88
- Defense IT consulting firms in Rockville76
- Defense IT consulting firms in San Antonio76
- Defense IT consulting firms in Leesburg75
- Defense IT consulting firms in Baltimore66
- Defense IT consulting firms in Los Angeles59
- Defense IT consulting firms in Bethesda50
- Defense IT consulting firms in Falls Church50
- Defense IT consulting firms in Denver47
- Defense IT consulting firms in San Francisco47
- Defense IT consulting firms in Charlotte46
- Defense IT consulting firms in Seattle46
- Defense IT consulting firms in Colorado Springs44
- Defense IT consulting firms in Orlando43
- Defense IT consulting firms in Springfield43
- Defense IT consulting firms in Boston40
- Defense IT consulting firms in Las Vegas38
- Defense IT consulting firms in Plano37
- Defense IT consulting firms in Richmond37
- Defense IT consulting firms in Sacramento37
- Defense IT consulting firms in Sterling36
- Defense IT consulting firms in Alpharetta35
- Defense IT consulting firms in Minneapolis34
- Defense IT consulting firms in Raleigh33
- Defense IT consulting firms in Bowie32
- Defense IT consulting firms in Manassas31
- Defense IT consulting firms in Irvine30
- Defense IT consulting firms in Phoenix30
- Defense IT consulting firms in Virginia Beach30
- Defense IT consulting firms in Annapolis Junction29
- Defense IT consulting firms in Columbus29
- Defense IT consulting firms in Frisco29
- Defense IT consulting firms in Jacksonville29
- Defense IT consulting firms in Silver Spring29
- Defense IT consulting firms in Wilmington29
- Defense IT consulting firms in Woodbridge29
- Defense IT consulting firms in Hanover28
- Defense IT consulting firms in Indianapolis28
- Defense IT consulting firms in San Jose27
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 defense 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 defense IT consulting firms are there based in San Diego, United States?
RevenueBase identified 91 defense IT consulting firms headquartered in San Diego, 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?
Epsilon Systems Solutions, INC, headquartered in San Diego, tops this list with the largest team on record.
Which city in the United States has the most defense IT consulting firms?
Washington leads the United States with 282 headquartered companies, followed by Reston (186) and New York (179). San Diego has 91.
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 751 verified decision-maker contacts tracked across these 91 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 28, 2026.
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Download this list →Related lists
Defense IT consulting firms by geography
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- Defense IT consulting firms based in Canberra, Australia
- Defense IT consulting firms based in Melbourne, Australia
- Defense IT consulting firms based in Sydney, Australia
- Defense IT consulting firms based in Dhaka, Bangladesh
- Defense IT consulting firms based in Barueri, Brazil
- Defense IT consulting firms based in Belo Horizonte, Brazil
- Defense IT consulting firms based in Brasilia, Brazil
- Defense IT consulting firms based in Curitiba, Brazil
- Defense IT consulting firms based in Rio De Janeiro, Brazil
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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