| # | Company | Employees |
|---|---|---|
| 1 | 57,548 | |
| 2 |
General Atomicsga.com
Development of advanced technology solutions including unmanned aerial vehicles, research reactors, aircraft systems, MagLev transport, and fusion energy for global customers. |
11,213 |
| 3 |
Illuminaillumina.com
The company develops innovative technologies and assays for genetic analysis, enabling personalized medicine and advancing disease research, drug development, and molecular testing |
9,673 |
| 4 |
Resmedresmed.com.br
The company pioneers innovative medical devices and software platforms to treat chronic diseases, improve quality of life, and reduce healthcare costs globally |
9,180 |
| 5 |
Dexcomdexcom.com
A leader in continuous glucose monitoring technology, empowering individuals with diabetes to control their health and pursue their dreams |
8,997 |
| 6 |
Solar Turbinessolarturbines.com
Manufacturer of industrial gas turbines, compressors, and generator sets used in oil, gas, and power generation projects globally. |
7,656 |
| 7 |
Kratos Defense and Security Solutionskratosdefense.com
National security technologies spanning unmanned systems, hypersonics, satellite communications, cyber defense, and propulsion systems for rapid deployment to support various military domain missions. |
2,950 |
| 8 |
CareFusionbd.com
Develops market-leading technologies and services for the health care industry; products improve cost and safety of patient care. |
2,600 |
| 9 |
Cubic Transportation Systemscubic.com
A global leader in transportation systems, providing payment solutions and traveler tools for seamless journeys while revolutionizing the industry |
2,452 |
| 10 |
Tandem Diabetes Caretandemdiabetes.com
A global diabetes technology company manufacturing and selling advanced automated insulin delivery systems to reduce the burden of diabetes management |
2,203 |
| 11 |
Cohu, Inc.cohu.com
A global supplier of semiconductor test equipment, handlers, MEMS modules, thermal systems, and automated test equipment, focusing on yield improvement and cost reduction for manufacturers |
2,084 |
| 12 | 1,569 | |
| 13 |
Kyocera International, Inc. (North America)americas.kyocera.com
A leading provider of high-tech products for consumers and businesses including fine ceramics, semiconductor components, communication equipment, consumer products, and more |
1,553 |
| 14 |
NuVasiveglobusmedical.com
A company focused on providing innovative musculoskeletal procedural solutions and enabling technologies to improve patient care worldwide Visit their website for more information |
1,409 |
| 15 |
100%100percent.com
A San Diego-based brand producing premium goggles, eyewear, helmets, gloves, and sportswear for motocross, downhill slopes, and BMX racing to inspire a new generation of racers |
1,318 |
| 16 |
Netradynenetradyne.com
Utilizing computer vision and edge computing for fleet safety solutions, analyzing data points to improve driver behavior, increase profitability, and enhance transparency. |
1,167 |
| 17 |
Lytx, Inc.lytx.com
Global leader providing video-based fleet management solutions, leveraging video to enhance driver and fleet safety, efficiency, and profitability. Offers services from safety to fuel management, utilizing AI. |
1,006 |
| 18 |
Hyundai Transleadhyundaitranslead.com
A leading manufacturer of dry and refrigerated van trailers, domestic containers, container chassis, and converter dollies for the North American transportation industry |
950 |
| 19 |
Kyocera Mobilekyoceramobile.com
A leader in rugged mobility solutions, specializing in waterproof and durable mobile devices with enterprise-grade security and white glove services for business customers |
924 |
| 20 |
Becton Dickinson Company (Safety Syringes, Inc. )bd.com
A global medical technology company advancing health through improved medical discovery, diagnostics, and care delivery |
854 |
| 21 | 826 | |
| 22 |
Platform Scienceplatformscience.com
Provides a unified platform enabling fleets to develop, deploy, and manage mobile devices and applications for commercial vehicles nationwide. |
752 |
| 23 |
Pulse Electronics Corporationyageogroup.com
Designing and manufacturing passive electronic components like magnetics, antennas, and connectors for communications, computing, industrial, IoT, and transportation sectors. |
691 |
| 24 |
LifeWave Corporatelifewave.com
An innovative health technology company utilizing wearable wellness patches and products to reverse aging, maximize human potential, and promote wellness |
680 |
| 25 |
iTECHitecheng.com
Designs, engineers, and manufactures batteries, chargers, and docking stations for medical, handheld electronics, security, and mobile communication markets, focusing on intrinsically safe and smart power. |
580 |
| 26 |
pSemi, A Murata Companypsemi.com
A semiconductor company specializing in RF integration, power management, sensors, and optical transceivers to enable advanced technologies for various industries |
555 |
| 27 |
Halozyme, Inc.halozyme.com
Develop enzyme technology enhancing drug delivery, reducing treatment times, partnering with pharma companies to improve patient outcomes globally. |
536 |
| 28 |
Quidelquidelortho.com
QuidelOrtho develops intelligent diagnostic solutions to transform data into actionable insights, enabling faster responses and a healthier future globally |
496 |
| 29 |
Mitsubishi Elevatorsmitsubishielevator.com
Specializing in elevator construction, the organization is located in San Diego, California, United States |
475 |
| 30 |
Element Bioscienceselementbiosciences.com
A life science company developing disruptive DNA sequencing and multiomics technology to empower researchers with affordable, high-quality data |
445 |
| 31 |
SmartDrivefleet.solera.com
Provider of transportation SaaS solutions, specializing in safety, compliance, routing, dispatch, and more Follow for industry updates and insights |
430 |
| 32 |
Inseego Corpinseego.com
Industry pioneer in smart device-to-cloud solutions, extending 5G network edge for broader coverage, high-speed data, low latency, and secure internet access worldwide |
413 |
| 33 |
Argen Corporationargen.com
Global leader supporting dental laboratories in 105+ countries, committed to laboratory success as a partner rather than a competitor. |
411 |
| 34 |
ecoATM Gazelleecoatm.com
A San Diego-based company pioneering device re-Commerce through eco-friendly kiosks, providing instant payment and responsible recycling for electronic devices |
380 |
| 35 |
PDPturtlebeach.com
Supplying video game peripherals and accessories globally for over 25 years, promoting community, individuality, and expression for gamers worldwide |
355 |
| 36 |
Volcano Corporationvolcanocorp.com
Global leader in intravascular imaging and therapy for coronary and peripheral applications, offering innovative technologies to improve patient outcomes worldwide |
334 |
| 37 |
GreatCall
The company, now part of Best Buy Health, enriches lives through technology and connections, focusing on supporting their purpose |
330 |
| 38 |
Pitney Bowes Inc.pitneybowes.com
A computer software based in California, specializing in presort services and located in San Diego |
321 |
| 39 |
Quantum Designqdusa.com
The company develops and markets automated temperature and magnetic field testing platforms for materials characterization across various scientific fields globally |
313 |
| 40 |
KICkicthermal.com
The company provides automatic profiling, fixtures, and software solutions for various manufacturing processes, offering Smart Factory solutions for automation and process control |
311 |
| 41 |
GreenHousegreenhouseintl.com
A provider of energy efficiency solutions and sustainable infrastructure products for residential, commercial, industrial, government, and military markets |
296 |
| 42 |
PowerFlexpowerflex.com
A clean technology solutions company enabling transition to carbon-free energy through solar, storage, EV charging, and energy management platform |
250 |
| 43 |
Inova Diagnostics, A Werfen Companyinovadx.com
A leader in autoimmune technologies, Inova Diagnostics develops and manufactures IVD systems and reagents for diagnosis and monitoring of complex disorders worldwide |
249 |
| 44 |
Pro-Tecprotecbrand.com
Since 1973, this company has been a leading producer of stylish and technologically advanced protective gear for various sports |
233 |
| 45 |
Taoglastaoglas.com
Provider of antennas, IoT components, and design services, ensuring seamless connectivity solutions with global engineering resources and a customer-focused approach for innovative RF systems |
222 |
| 46 |
CPG Sorting Technologiescpgrp.com
Leading manufacturer of advanced sorting systems for waste and recycling, including CP Auger Screens and NIR/AI MSS optical sorters, enhancing efficiency and safety. |
203 |
| 47 |
Biotixbiotix.com
A global leader in manufacturing laboratory consumables and liquid handling solutions, dedicated to providing innovative products for researchers worldwide |
202 |
| 48 |
Steren Solutionssterensolutions.com
This company provides innovative electronics connectivity solutions, manufacturing over 3,000 products for broadband, telco, and consumer electronics distributors, ensuring quality and customer satisfaction. |
162 |
| 49 |
Beam Globalbeamforall.com
Clean technology innovator specializing in sustainable infrastructure products, EV charging solutions, energy storage, and energy security to power transportation and protect the environment |
97 |
| 50 |
Kurin Inc.kurin.com
Privately owned business dedicated to engineering better healthcare through innovative technologies, focusing on reducing false positive blood cultures in hospitals |
89 |
| 51 |
Space Micro โ Powered by Voyager Spacespacemicro.com
An engineering-driven supplier of radiation-hardened communications, electro-optics, and digital systems for commercial, civil, and military space applications worldwide Based in San Diego, CA |
84 |
| 52 |
Nikkiso America, Inc.nikkisoamerica.com
The company provides innovative technologies and products globally, focusing on aerospace, industrial, medical, and precision equipment divisions to meet customer demands |
65 |
| 53 |
AMS Inc. (Advanced Mechatronics Solutions, Inc.)ams-fa.com
Global enterprise specializing in designing and manufacturing state-of-the-art factory automation equipment with precision and high performance using cutting-edge technologies |
58 |
| 54 |
Presidio Components, Inc.presidiocomponents.com
Designs and manufactures ceramic capacitors for demanding applications including space, military, high-temperature, RF, and custom commercial electronics. |
56 |
| 55 |
Materials Design, Inc.materialsdesign.com
Leader in computational materials engineering providing solutions for diverse industrial applications Offers high performance modeling environment, instrument hardware, and engagement with scientific team |
42 |
| 56 |
Nuvve Holding Corp.nuvve.com
Leading planet electrification through intelligent energy platform, combining vehicle-to-grid technology and electrification partners to manage power among EV batteries and grid. |
39 |
| 57 |
Custom Cabs Inc.customcabsinc.com
A premier designer, manufacturer, and installer of custom elevators with exotic materials for interior and exterior use, offering complete packages tailored to individual needs |
21 |
| 58 |
Mobiliti Interiorsmobilitioffice.com
Innovative workspace solutions provider collaborating with architects, designers, and manufacturers to create bespoke commercial furniture that activates brand identity |
15 |
| 59 |
Wintriss Engineering Corporationweco.com
Innovative technology company specializing in automated surface vision inspection systems for various industries, focused on improving product quality and reducing costs |
14 |
| 60 |
Grantchester Groupgrantchestergroup.com
Private equity firm investing in healthcare, energy, and industrials with a team of experienced CEO's and Operating Executives from successful companies |
11 |
| 61 |
Luna Nortelunanorte.co
A globally recognized jewelry brand blending nature's charm with elegance, celebrating individuality, empowerment, and self-expression through thoughtfully designed pieces |
10 |
| 62 |
Cover Glass USA Inc.coverglassusa.com
The company specializes in frameless sliding glass door systems that offer unobstructed views and transform spaces for a more open lifestyle |
9 |
| 63 |
Breakwave Energybreakwave.energy
This company specializes in providing innovative solutions to meet future energy demands, focusing on sustainability and efficiency |
2 |
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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 Nov 2, 2026.
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The same list elsewhere in United States
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