Company lists · Data refreshed September 2026
Top 25 Propulsion systems engineers recruitment companies worldwide
RevenueBase identified 451 propulsion systems engineers recruitment companies worldwide as of September 2026 and tracks 8,198 professional contacts across them, including 1,762 with verified work emails. The United States is the largest market and London the largest hub.
This list covers propulsion systems engineers recruitment companies worldwide, 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 29, 2026. Country and city lists for propulsion systems engineers recruitment companies follow the table.
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 propulsion systems engineers recruitment companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 543 contacts → | ||||
Indirect evidence “STS Technical Services is a Top 100 Staffing Firm that’s partnered with some of the largest names in the aerospace, manufacturing, defense and industrial industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 465 contacts → | ||||
Strong evidence “Rockfin is a world-leading engineering company specializing in the design, manufacture, testing and servicing of oil and fuel systems for gas turbines, steam turbines, generators…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 422 contacts → | ||||
Strong evidence “INTUITIVE® is a professional engineering and systems integration firm delivering rapid, missionfocused solutions for defense, government, and commercial customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 370 contacts → | ||||
Indirect evidence “Imprint: Information in accordance with par.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 366 contacts → | ||||
Partial evidence “Over 40 years old and headquartered in Rhode Island near Newport's First Beach, SEACORP employs the highest quality people to provide vital information technology and engineering…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 287 contacts → | ||||
Indirect evidence “Strom Aviation, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 261 contacts → | ||||
Partial evidence “Stellar Solutions is an engineering services company providing end-to-end technical expertise and problem solving skills to significant national and international aerospace…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 253 contacts → | ||||
Partial evidence “PDS is one of the leading Aerospace, Information Technology (IT) & Engineering consulting firms in the Western United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 243 contacts → | ||||
Partial evidence “is a leading marine propulsion solution provider, specializing in advanced propulsion technologies, electrical integration, and energy efficiency solutions for both commercial and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 191 contacts → | ||||
Indirect evidence “The initiative driving the creation of MSB Global Ressources, was the desire to assist companies in the aerospace sector by offering customized solutions to meet their needs in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 182 contacts → | ||||
Partial evidence “ITS has been a leader in the engineering, technical and professional recruiting field since 1984.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 147 contacts → | ||||
Partial evidence “For more than 30 years, CTS International has been filling highly technical jobs utilizing our streamlined recruitment process, superior services, and international expertise.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 144 contacts → | ||||
Partial evidence “We are trusted industry insiders in executive search, specializing in UAV, aerospace, and high-impact engineering roles.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 123 contacts → | ||||
Indirect evidence “APA Services specializes in providing a wide range of Aviation Technicians, each specifically catered to the individual needs of our clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 121 contacts → | ||||
Partial evidence “Committed to Engineering Excellence in Defence & Aerospace Since 1954!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 94 contacts → | ||||
Indirect evidence “Die Bayern-Chemie ist ein global tätiges Unternehmen mit mehr als 60 Jahren Erfahrung in der Entwicklung von Lenkflugkörper- und Raumfahrtantrieben.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 85 contacts → | ||||
Strong evidence “Steerprop is a leading designer and manufacturer of propulsion systems for the most demanding applications and toughest conditions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 81 contacts → | ||||
Partial evidence “Aviya Aerospace Systems provides aerospace systems development expertise to the World’s largest aerospace and defense contractors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 75 contacts → | ||||
Indirect evidence “SQEP provides security-cleared experts across defence, aerospace and critical infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 75 contacts → | ||||
Partial evidence “Moseley Technical Services, Inc.(Moseley) is a minority-owned, Small-Disadvantaged Business (SDB), Minority Business Enterprise (MBE) certified, and award-winning Engineering…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence “Databased Solutions has made the Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 74 contacts → | ||||
Indirect evidence “company website” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 70 contacts → | ||||
Partial evidence “Aviation Indeed is a preeminent staffing agency specializing in recruitment services for the Aviation, Aerospace and Defense sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 64 contacts → | ||||
Partial evidence “Our expertise is founded in space propulsion and mobility.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 64 contacts → | ||||
Indirect evidence “The Structures Company is a premier aerospace and defense staffing agency with nationwide reach.” Source: RevenueBase Database · checked Sep 29, 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: propulsion systems engineers recruitment 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 propulsion systems engineers recruitment companies.
- Partial evidence
- Its own public description names part of propulsion systems engineers recruitment companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name propulsion systems engineers recruitment 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 451 propulsion systems engineers recruitment companies worldwide
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Propulsion systems engineers recruitment companies worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 propulsion systems engineers recruitment 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.
- Coverage
- Every country. Country and city lists for propulsion systems engineers recruitment companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “propulsion systems engineers recruitment 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 propulsion systems engineers recruitment 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 propulsion systems engineers recruitment companies, and records with no verified work email.
- 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, 1,762 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 29, 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.
Propulsion systems engineers recruitment companies by location
2 lists · largest firstEvery Propulsion systems engineers recruitment companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 propulsion systems engineers recruitment 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 propulsion systems engineers recruitment companies are there worldwide?
RevenueBase identified 451 propulsion systems engineers recruitment companies worldwide 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?
STS Technical Services, headquartered in Brookfield, tops this list with the largest team on record.
Which country has the most propulsion systems engineers recruitment companies?
The United States leads with 169 companies, followed by the United Kingdom (72). Every propulsion systems engineers recruitment companies list by country and city is linked on this page.
Which city has the most propulsion systems engineers recruitment companies?
London leads with 14 headquartered companies, followed by Bristol (5) and Huntsville (5).
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 1,762 verified decision-maker contacts tracked across these 451 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 29, 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.