Company lists · Data refreshed October 2026

Top 25 Defense contractor engineering consulting companies based in Washington, United States

Name: Defense contractor engineering consulting companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 64 companies tracked

RevenueBase identified 64 company matches for defense contractor engineering consulting companies associated with Washington, United States as of October 2026 and tracks 2,180 professional contacts across them, including 588 with verified work emails. Across the United States, Huntsville is the largest hub for this category (91 companies); Washington follows with 64.

This list covers company matches for defense contractor engineering consulting companies associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 11, 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 RevenueBase SmartSearch · Exact Recorded Oct 11, 2026 How this list was built

64Companies

2,180Contacts tracked

588Verified emails

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The 25 largest defense contractor engineering consulting companies based in Washington, United States

Ranked by team size

Top 25 of 64 company matches for defense contractor engineering consulting companies based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Gryphon Technologies, INC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	1,001-5,000	455 contacts →
	Exact match “Gryphon Technologies - now part of ManTech, is headquartered in Washington DC.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2	Sayres Defense	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	201-500	234 contacts →
	Exact match “Sayres Defense has been providing excellence in service to the federal government since 2001.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3	Saalex Solutions	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	501-1,000	181 contacts →
	Exact match “Saalex Solutions, a division of Saalex Corp, is an Engineering and Information Technology Services company with a focus on Test Range Operations and Management, Engineering and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4	Synchron, LLC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	145 contacts →
	Exact match “SYNCHRON provides technical support services to the Department of Defense, Government Contractors, and select partners.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5	JRC Integrated Systems	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	120 contacts →
	Exact match “JRC Integrated Systems is a systems engineering consulting firm that provides scientific, engineering, and technical expertise to solve complex problems for the Department of…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6	BCS LLC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	201-500	97 contacts →
	Exact match “BCS Allegient is a small business with a 30-year history of helping government, research, and private sector clients implement their programs and missions and achieve success.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7	Veracity Engineering	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	84 contacts →
	Exact match “Since 2001, Veracity Engineering has been successful in building, growing, and performing on a portfolio of technically challenging engineering and program management engagements…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8	Patrona Corporation	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	75 contacts →
	Exact match “Patrona Corporation is a DoD federal contractor providing program management, engineering, strategic and operational planning, quality assurance, financial management, and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9	Delon Hampton & Associates, Chartered	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	74 contacts →
	Exact match “Delon Hampton & Associates, Chartered (DHA), is a professional consulting engineering firm specializing in civil and structural engineering, as well as program and construction…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	Els, INC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	56 contacts →
	Exact match “ELS Inc.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11	Jackson And Tull	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	201-500	49 contacts →
	Exact match “Jackson and Tull is an award-winning engineering services and advanced technology company headquartered in Washington DC.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12	Teknoluxion, A Division Of Bcore	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	47 contacts →
	Exact match “teKnoluxion provides specialized software & systems engineering, architecture, cloud services, IT advisory, and data analytics/visualization solutions to the DoD and IC.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	Creative Business Solutions, INC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	44 contacts →
	Exact match “Creative Business Solutions Inc.(CBS) is an “award winning” Certified Participant in the U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14	Phaedrus Engineering	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	1-10	24 contacts →
	Exact match “Phaedrus is a small engineering company located in the DC Metro Area, serving the DoD, academia, and private sector with professional skills for design, architecture, and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15	Bellamy Management Services	Exact match	Washington, United StatesHQ recorded Oct 11, 2026	51-200	24 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16	Alphatec PC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	22 contacts →
	Exact match “Alphatec PC is a full service A/E firm located in Dupont Circle and has been providing design and consulting services for over 50 years.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	Raye IT Consulting	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	19 contacts →
	Exact match “Founded in 2015, Raye IT Consulting, LLC is an 8(a) certified Woman Owned Small Business headquartered in Raleigh NC with a location in Washington, DC.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18	Avantiqor	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	19 contacts →
	Exact match “Avantiqor offers scientific, engineering, and technical expertise to clients in the government, academia, and industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19	Avascent	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	51-200	17 contacts →
	Exact match “Avascent is the leading management consulting firm specializing in serving senior executives in the defense, aerospace, healthcare, homeland security, logistics, technical…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Bluestonelogic	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	16 contacts →
	Exact match “BluestoneLogic is a pioneer in “integrated systems assessment”: leveraging government and industry market analysis and systems engineering expertise to provide immediate solutions…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	DRM International, INC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	1-10	7 contacts →
	Exact match “DRM International, Inc,(DRM) is a leading DIsadvantaged Business Enterprise (DBE) professional engineering consulting firm offering engineering, architectural, planning…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	inventium.io	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	1-10	6 contacts →
	Exact match “DYNAMIC, ADAPTIVE inventium.io understand the only constants are mission dynamic change and critical priorities shift.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	Grotheer & CO	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	5 contacts →
	Exact match “GROTHEER & CO, a small business located in Washington, DC, has been practicing professional engineering since 1954, and has completed thousands of projects for local and federal…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	Hilltech Consulting, INC	Exact match	Washington, United StatesHQ recorded Oct 11, 2026	11-50	5 contacts →
	Exact match “HillTech Consulting is an information technology solutions consulting firm working largely with the Department of Defense and other public sector entities.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Stem Solutions, LLC	Exact match	Washington, DC, United StatesHQ recorded Oct 11, 2026	11-50	5 contacts →
	Exact match “STEM Solutions is a mission-focused technical services provider supporting the Department of Defense, Intelligence Community, and federal integrators with cleared expertise in…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “defense contractor engineering consulting companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 64 defense contractor engineering consulting companies based in Washington, United States

See the full list, filter by size, metro and specialty, and access 588 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Defense contractor engineering consulting companies based in Washington, United States at a glance

As of Oct 11, 2026

27.0%Verified-email coverage

34.1Average contacts per company

11-50Median size (employees)

Oct 11, 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 Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 64 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Washington, United States whose business descriptions match “defense contractor engineering consulting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 588 professional contacts with verified work emails across the full matched dataset. 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 October 11, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Defense contractor engineering consulting companies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “defense contractor engineering consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense contractor engineering consulting companies are there based in Washington, United States?

RevenueBase identified 64 company matches for defense contractor engineering consulting companies associated with Washington, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Gryphon Technologies, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most defense contractor engineering consulting companies?

Huntsville leads the United States with 91 company records, followed by Washington (64) and Arlington (61).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 588 professional contacts with verified work emails tracked across these 64 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 11, 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.