| # | Company | Employees |
|---|---|---|
| 1 |
United States Armyunitedstatesarmy.gov
An organization dedicated to serving and protecting the nation through military operations and humanitarian efforts domestically and internationally |
16,827 |
| 2 |
L3 Technologiesl3harris.com
Develops advanced defense technologies and commercial solutions in pilot training, aviation security, night vision, weapons, maritime systems and space for worldwide deployment. |
15,734 |
| 3 |
GlobalFoundriesgf.com
Semiconductor manufacturer offering innovative process technology solutions, design, development, and fabrication services with global presence and diverse workforce |
13,861 |
| 4 | 7,759 | |
| 5 |
Pall Corporationpall.com
Filtration, separation, and purification solutions for health, safety, environment, improving product quality, protecting assets, minimizing emissions, and advancing technology. |
5,067 |
| 6 |
SRCsrcinc.com
A not-for-profit R&D company tackling defense, environment, and intelligence challenges through innovative solutions, technology, and expertise since 1957 |
2,790 |
| 7 |
Astronics Corporationastronics.com
Innovative technologies for power, connectivity, lighting, structures, and more, delivering creative solutions to keep people safe, comfortable, and connected daily |
2,003 |
| 8 |
Steel Partners Holdingssteelpartners.com
A global diversified holding company engaging in multiple businesses through subsidiaries, associated companies, and other interests |
1,699 |
| 9 |
Moog Space and Defensemoog.com
A leading provider of motion and flow control solutions for space, defense, power, and data applications, including satellites, military vehicles, and naval vessels |
1,410 |
| 10 |
Saab, Inc.saab.com
Supplies United States government and commercial clients with military defense, civil security products, and innovative technical solutions through heavy research and development. |
1,113 |
| 11 |
Moog Aircraftmoog.com
Designs, manufactures, and integrates precision motion control products and systems for commercial and military aircraft, rotorcraft, and unmanned vehicles with innovative technology |
983 |
| 12 | 967 | |
| 13 |
GE Researchgeaerospace.com
Innovative engine creating differentiated products for aviation, power, transportation, and healthcare sectors Legacy of transformative innovation continues through interdisciplinary research |
904 |
| 14 |
PCB Piezotronics, Inc.pcb.com
Manufactures vibration, pressure, force, strain, shock, and acoustic sensors for testing, measurement, monitoring, and control across multiple industries globally. |
845 |
| 15 |
United States Armygoarmy.com
This company provides comprehensive benefits such as health care, life insurance, and vacation time for soldiers and their families |
783 |
| 16 |
Telephonicsttm.com
Global manufacturer of technology solutions, including RF components, PCBs, and engineering systems, focused on shortening time-to-market for customers worldwide |
712 |
| 17 |
IEC Electronics Corp.creationtech.com
Provider of electronic manufacturing services for advanced technology companies in medical, industrial, aerospace, and defense sectors Specializes in full system assemblies and testing |
538 |
| 18 |
Moog Industrialmoog.com
A worldwide manufacturer of precision motion control products and systems for various industries, including aerospace, defense, industrial machinery, and medical equipment |
498 |
| 19 |
G. W. Liskgwlisk.com
Global leader in designing and manufacturing engineered solutions such as solenoids, sensors, motors, actuators, and flame arrestors for diverse markets worldwide |
469 |
| 20 |
Persistent Systems, LLCpersistentsystems.com
A global communications technology company developing secure Mobile Ad hoc Networking systems for various industries, with proven solutions for challenging environments |
453 |
| 21 |
Arnold Magnetic Technologiesarnoldmagnetics.com
A global manufacturer of magnets, assemblies, and thin metals for various industries, specializing in high performance materials for smaller, lighter, more efficient motor systems |
283 |
| 22 |
Rochester Precision Opticsrpoptics.com
A world-class manufacturer of precision optical product solutions in the Greater Rochester area, offering design, production, and assembly for Defense and Commercial Industries |
179 |
| 23 |
ITT Enidineenidine.com
A supplier of engineered products such as shock absorbers, vibration isolation products, and deceleration devices for various industries worldwide |
177 |
| 24 |
Eaton Industries Inc
A global technology leader in power management, electrical systems, hydraulics, aerospace technology, and automotive systems for performance, safety, and efficiency |
167 |
| 25 |
Servotronics, Inc.servotronics.com
An award-winning company specializing in designing and manufacturing high-quality components and systems for precise control, reliability, and cost containment in various industries |
160 |
| 26 |
Sealing Devices Inc.sealingdevices.com
Manufacturer and fabricator of gaskets, o-rings, seals, and molded rubber parts, offering expert engineering assistance and a wide range of sealing solutions |
156 |
| 27 |
CPI Aerostructurescpiaero.com
A US manufacturer of structural aircraft assemblies and avionics systems for aerospace and defense markets, offering engineering, program management, and MRO services |
155 |
| 28 |
Seal & Design Incsealanddesign.com
A leading manufacturer and distributor of gaskets, seals, O-rings, and molded rubber/plastic products serving various industries globally with exceptional customer service |
108 |
| 29 |
Syntec Opticssyntecoptics.com
An American optics and photonics manufacturing company in Rochester, NY, specializing in custom optical solutions for defense, medical, and virtual reality applications |
101 |
| 30 |
Crye Precision LLCcryeprecision.com
Designing, engineering, and manufacturing high-performance, long-wearing apparel and equipment for military and law enforcement in the USA. |
54 |
| 31 |
Sydor Optics, Inc.sydor.com
Global leader in precision processing and delivery of high quality flat optical components for various industries, offering polishing, machining, cleaning and sub-assembly services ISO 9001:2015 Certified |
54 |
| 32 |
Addison Precision Manufacturingaddisonprec.com
A highly technical machining facility that specializes in manufacturing high precision-machined components with a focus on operational excellence and on-time delivery |
49 |
| 33 |
D.P. Tool & Machine, Inc.dptool.com
A family-owned manufacturing company specializing in CNC precision turned components, machining, welding, assemblies, fixtures for major corporations |
48 |
| 34 |
SpaceKnow Inc.spaceknow.com
Empowers decision-makers with ultra large-scale planetary analysis using proprietary AI-powered analytics engine and comprehensive earth observation imagery. |
38 |
| 35 |
Ring Precisionringprecision.com
Precision machining company specializing in producing components to exact specifications with special skills, advanced equipment, and engineering expertise for various industries requiring high accuracy and prompt delivery |
35 |
| 36 |
ATD Precisionatdprecision.com
Precision manufacturing solutions provider for tight tolerance, complex machined parts in industries such as aerospace, sensors, medical devices AS9100 certified |
31 |
| 37 |
Vermeer
The company designs and manufactures tools specifically crafted to support military personnel in challenging and hostile environments |
31 |
| 38 |
Everfabeverfab.com
Specializing in manufacturing with skilled teams providing axis programming, assembly, sub-assembly, kitting, custom finishing to meet customer requirements Hiring now |
27 |
| 39 |
Supreme Screw Productssupremescrewproducts.com
A leading provider of precision machined components for Medical, Aerospace, Defense, and Firearms markets with over 55 years of experience |
25 |
| 40 |
Heany Industries, Inc.heany.com
A materials engineering company specializing in creating industry-leading ceramics, coatings, and dental zirconia, as well as providing customized technology support services |
21 |
| 41 |
Gasser and Sonsgasser.com
A family-owned company with 90 years of experience in providing high-quality parts, manufacturing, and service worldwide through "Total Capability" |
21 |
| 42 |
American Aerospace Controlsa-a-c.com
A premier manufacturer of AC & DC transducers for high reliability defense, aerospace, and space flight applications, meeting strict standards for quality and customization |
21 |
| 43 |
Thuro Metal Products, Inc.thurometal.com
Precision machined component parts and assemblies manufacturer for Automotive, Industrial, Aerospace/Defense, and Lighting/Optics industries, with ISO and AS certifications, serving various markets |
17 |
| 44 |
Pivot Precisionpivotprecision.com
Manufacturer of precision components offering capabilities for high and low production runs Family-owned with competitive pricing, prioritizing customer relationships and on-time delivery |
15 |
| 45 |
Courser Inccourser.com
A machinery company located in Elmira, NY, specializing in manufacturing and supplying equipment for various industries in the United States |
14 |
| 46 |
Optics Technology, Inc.opticstechnology.com
A world leader in optical components and assemblies, specializing in micro/miniature optics with precise machining capabilities for various industries |
10 |
| 47 |
MEI Technology
A technology company providing innovative services in engineering, cyber security, and research to customers in aerospace, defense, optical, and biotechnology sectors globally |
10 |
| 48 |
Joka Industriesjokaindustries.com
Specializing in contract manufacturing for Aerospace and Oil & Gas industries since 1968 Committed to customer satisfaction, continuous improvement, and eco-friendly machining techniques |
8 |
| 49 |
Cosmo Optics Inccosmooptics.com
Optical component manufacturer based in Albany, NY, specializing in producing high-quality optical components for various industries |
6 |
| 50 |
Seal & Design Inc, Higbee Divisionsealanddesign.com
A leading North American manufacturer of gaskets and seals, providing high-quality products and excellent manufacturing services to customers worldwide |
5 |
| 51 |
X-Cell Precisionxcellprecision.com
Specializing in top-notch manufacturing and machining services for aerospace, defense, medical, and other industries, with a focus on high-quality components and quick turnaround times |
4 |
| 52 |
Willard Machine Corpwillardmachine.com
A machinery company based in Buffalo, New York, specializing in manufacturing and providing machinery equipment and solutions to various industries |
4 |
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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