Company lists · Data refreshed September 2026
Top 25 Space systems engineering firms based in the United States
RevenueBase identified 1,446 space systems engineering firms headquartered in the United States as of September 2026 and tracks 102,442 professional contacts across them, including 11,259 with verified work emails. Huntsville is the largest hub.
This list covers space systems engineering firms headquartered in the 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 18, 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 space systems engineering firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,934 contacts → | ||||
Partial evidence “Blue Origin manufactures and operates rocket engines, reusable launch vehicles, lunar landers, and satellite systems.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,297 contacts → | ||||
Indirect evidence “At Harris, our shared set of values, skills and experience have shaped some of the most remarkable communications technologies and cutting-edge innovations in the world.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,452 contacts → | ||||
Partial evidence “Every second, a plane takes off with UTC Aerospace Systems equipment onboard.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,399 contacts → | ||||
Indirect evidence “Orbital ATK is built on the strong heritage of two great companies, Orbital Sciences Corporation and ATK, with a history of collaboration providing reliable, affordable and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,733 contacts → | ||||
Indirect evidence “Applied Research Associates, Inc.(ARA) is the company that government and industry turn to for innovative technologies and solutions to problems that improve our safety, security…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,352 contacts → | ||||
Partial evidence “Aegis provides custom engineering and technology development services to a broad array of clients, including Fortune 100 companies, the U.S.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,035 contacts → | ||||
Partial evidence “We’re now a part of BAE Systems, Inc, where we’ll continue to leverage our long-standing expertise in spacecraft, instruments, ground systems, sensors, tactical systems…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,923 contacts → | ||||
Partial evidence “Crane Aerospace & Electronics supplies critical systems and components to the aerospace and defense markets.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,920 contacts → | ||||
Partial evidence “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,917 contacts → | ||||
Partial evidence “Scientific Research Corporation is an advanced engineering company that was founded in 1988 to provide innovative solutions to the U.S.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,459 contacts → | ||||
Partial evidence “Headquartered in Colorado, Sierra Space is a mission-proven Defense Tech company delivering satellite platforms, critical subsystems, reusable spaceplanes, hypersonic…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,331 contacts → | ||||
Partial evidence “COLSA Corporation is an engineering and support services company founded in 1980.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,171 contacts → | ||||
Partial evidence “SSL, based in Palo Alto, California, is a leading provider of advanced spacecraft systems, with broad expertise to support commercial and government satellite operators and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,168 contacts → | ||||
Indirect evidence “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,054 contacts → | ||||
Indirect evidence “Orbital Sciences is now Orbital ATK!” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,049 contacts → | ||||
Indirect evidence “Radiance Technologies, Inc.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 17 | 826 contacts → | ||||
Partial evidence “From missile warning to advanced national security space missions, Millennium rapidly delivers affordable prototype and constellation solutions across orbits.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 18 | 822 contacts → | ||||
Strong evidence “Teledyne Brown Engineering is a leader in providing innovative systems engineering, integration, operations and advanced manufacturing solutions for defense, space, marine and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 19 | 808 contacts → | ||||
Partial evidence “TSC is an employee-owned, high technology company engaged in providing engineering services and specialized products to U.S.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 20 | 798 contacts → | ||||
Strong evidence “Arcfield was purpose-built to protect the nation and its allies through innovations in systems engineering and integration, space and mission launch assurance, cybersecurity and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 21 | 754 contacts → | ||||
Partial evidence “Kay and Associates, Inc.(KAI) was established in 1960 by our founder Donald Kay to provide high quality, cost effective solutions in response to the need for engineering and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 22 | 676 contacts → | ||||
Partial evidence “Marotta Controls is the place where aerospace and defense system designers can find world class resources and solutions for controlling pressure, motion, fluid, electronics and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 23 | 670 contacts → | ||||
Partial evidence “An innovator since 1982, Ghafari embraces an integrated design approach to deliver solutions that synergize building operations, systems, and people.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 24 | 581 contacts → | ||||
Indirect evidence “Barrios Technology is an award-winning, woman-owned and operated small aerospace business.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 25 | 518 contacts → | ||||
Partial evidence “ARES Corporation is one of the foremost Engineering, Project Management, Reliability and Mission Assurance, IT Architecture and Security, and Software Solutions companies in the…” Source: RevenueBase Database · checked Sep 18, 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: space systems engineering 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 space systems engineering firms.
- Partial evidence
- Its own public description names part of space systems engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name space systems engineering 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 1,446 space systems engineering firms based in the United States
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Space systems engineering firms based in the United States at a glance
As of Sep 18, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,446 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 space systems engineering 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 the United States whose own description of what they do matches “space systems engineering 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 space systems engineering 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 space systems engineering firms, and records with no verified work email. Companies headquartered outside United States 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, 11,259 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 18, 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.
Space systems engineering firms by metro
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 space systems engineering 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 space systems engineering firms are there based in the United States?
RevenueBase identified 1,446 space systems engineering firms headquartered in the 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?
Blue Origin, headquartered in Denver, tops this list with the largest team on record.
Which city has the most space systems engineering firms?
Huntsville leads with 85 headquartered companies, followed by San Diego (32) and Washington (28).
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 11,259 verified decision-maker contacts tracked across these 1,446 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 18, 2026.
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Space systems engineering firms by geography
- Space systems engineering firms based in Huntsville, United States
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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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