| # | Company | Employees |
|---|---|---|
| 1 | 11,656 | |
| 2 | 2,854 | |
| 3 |
Barracudabarracuda.com
Provides comprehensive cybersecurity protection for businesses of all sizes. Offers AI-powered platform securing email, data, applications, and networks with managed XDR and centralized management. |
2,263 |
| 4 | 1,884 | |
| 5 |
ChargePointchargepoint.com
This company specializes in providing a user-friendly electric vehicle charging network, focusing on creating the best EV charging experience since 2007 |
1,512 |
| 6 |
Centric Softwarecentricsoftware.com
AI-enabled platform providing PLM, planning, pricing, and market intelligence solutions to optimize product concept-to-commercialization for retailers, brands, and manufacturers across multiple consumer industries. |
1,423 |
| 7 |
Stratford Schoolstratfordschools.com
Leading independent WASC-accredited private school in California offering preschool through 12th grade education with a focus on individualized learning and STEAM curriculum |
957 |
| 8 |
Campbell Union School Districtcampbellusd.org
A PreK-8 school district in Santa Clara County educating over 6,500 students across various elementary, middle, and preschool facilities |
685 |
| 9 |
Spring Education Groupspringeducationgroup.com
Spring Education Group provides top-tier private school education from infancy to high school by uniting leading private school programs across the US and Asia |
654 |
| 10 |
Mirantismirantis.com
delivers full-stack AI infrastructure technology, reducing GPU infrastructure complexity and streamlining operations across the AI lifecycle, from Metal-to-Model, across any environment |
605 |
| 11 |
FirmGuardfirmguard.com
A pioneering firmware provider since 1979, specializing in designing, developing, and securing firmware for various computing devices worldwide |
582 |
| 12 | 554 | |
| 13 |
iD Tech Campsidtech.com
Leader in STEM education providing live learning and mentorship for kids and teens, with a focus on coding, AI, robotics, game design, and entrepreneurship |
487 |
| 14 |
Arterisarteris.com
Provider of system IP for accelerated SoC development across various industries Specializing in NoC interconnect IP for performance, power efficiency, and faster time to market |
463 |
| 15 |
Imperative Careimperativecare.com
Silicon Valley-based medical technology company developing connected innovations to improve care for individuals suffering from vascular diseases like stroke and pulmonary embolism |
412 |
| 16 |
Kalkitechkalkitech.com
Global leader bridging data communications gap for power utilities' field devices & head-end systems, enhancing reliability, efficiency, and extending SCADA system life |
378 |
| 17 |
Sandissandis.net
A professional services corporation specializing in civil engineering, traffic engineering, land surveying, and planning with expertise in Land Development Design for various sectors |
367 |
| 18 |
RetailNextretailnext.net
A global leader in retail analytics, providing real-time data to help retailers optimize operations, drive growth, and enhance the shopping experience |
308 |
| 19 |
Acceldataacceldata.io
Provides an Agentic Data Management platform that simplifies and speeds enterprise ability to deliver trusted data for AI and other initiatives. |
300 |
| 20 |
Tigo Energytigoenergy.com
Global provider of module level power electronics designing smart technologies, optimizers, inverters, and storage software to maximize production and safety for solar arrays. |
285 |
| 21 | 278 | |
| 22 |
On-Site.comon-site.com
Comprehensive apartment rental platform offering marketing, renter qualification, e-sign leases, online storage, and communication tools for resident retention. |
261 |
| 23 |
Spiraledge, Incspiraledge.com
An internet retailer and healthy living company, specializing in swim, yoga, triathlon, organic foods, and digital training platforms with top-rated customer service |
258 |
| 24 |
DispatchTrackdispatchtrack.com
Empowering delivery organizations with highly-configurable software, ensuring connected, agile, and intelligent delivery management from end to end, delighting customers daily. |
222 |
| 25 |
OSI Engineeringosiengineering.com
Provides workforce solutions, managed services, and recruitment outsourcing to technology companies, focusing on innovation and growth acceleration through specialized staffing. |
219 |
| 26 |
Maxonic Inc.maxonic.com
Provides staffing and payroll services across diverse skill areas, offering consulting, staff augmentation, and technical teams with advanced technology expertise globally. |
212 |
| 27 | 186 | |
| 28 |
LiveWorldliveworld.com
Social-first digital agency specializing in social media solutions for customer relationships, compliance, engagement, and online communities Bold creative, moderation, and compliance services |
183 |
| 29 |
West Valley Construction Company Inc.westvalleyconstruction.com
Leading underground utility construction company specializing in infrastructure design, installation, and maintenance of water, sewer, power, gas, and telecommunications systems Employee-owned with ESOP program |
180 |
| 30 |
Komprisekomprise.com
Komprise Intelligent Data Management optimizes unstructured data storage across multiple platforms, reducing costs and increasing data value through automated data movement and organization |
177 |
| 31 |
Jinko U.S.jinkosolar.us
A leading PV module manufacturer and energy storage system integrator with a global presence, offering trusted solar and storage solutions worldwide |
175 |
| 32 |
LGTC Grouplgtcgroup.com
A multidisciplinary mental health center offering a range of treatment options for children, adolescents, and adults at multiple convenient locations in California |
172 |
| 33 |
Family Matters In-Home Care, LLCfamilymattershc.com
Providing professional, warm, and compassionate senior care to help clients live independently at home, offering quality and responsive care |
167 |
| 34 |
Abbott, Stringham & Lynchaslcpa.com
ASL helps privately held businesses thrive in their markets, and high net worth individuals protect and grow their wealth through strategic financial services |
149 |
| 35 |
Shifamedshifamed.com
Specialized medtech innovation hub solving unmet needs through rapid execution, advanced technology, and collaboration to enhance clinical outcomes in healthcare |
86 |
| 36 |
Community Wellnesscommunitywellness.com
Innovative digital care solutions with FDA-approved devices, health coaches, informatics, and online communities that focus on improving patient outcomes and reducing costs |
75 |
| 37 |
Zencoderzencoder.ai
Providing AI-powered coding agents integrated into developer workflows to enhance software quality and accelerate product delivery processes. |
52 |
| 38 |
Core Mobile AIcoremobileinc.com
Digital Health solutions provider specializing in mobile apps and data analytics for healthcare, improving patient throughput, reducing delays, and enhancing operating room efficiency with high ROI |
47 |
| 39 |
Treselle Systemstreselle.com
Award-winning technology services company helping clients build software applications, integrate technologies, and provide IT solutions in big data, cloud computing, analytics, and enterprise application integrations |
33 |
| 40 |
Ron Witherspoon, Inc.rwinc.com
A precision manufacturing company in Silicon Valley providing quality products, specializing in aerospace, defense, and medical industries with ITAR approval and ISO 9001 certification |
28 |
| 41 |
RPM Training Co.rpmtraining.com
This company founded in 2012 focuses on purposeful functional training to help individuals lead adventurous lives and push boundaries against injury and apathy |
24 |
| 42 |
Skillnet Solutions, Inc.skillnetinc.com
A global company providing solutions in the USA, UK, Canada, and India Specializing in technology, consulting, and other professional services |
12 |
| 43 |
Thielen & Associates, Inc.thielenassociates.com
Wealth management firm providing tailored financial solutions for high-net-worth individuals and business owners, with expertise in investment strategies and personalized advice |
8 |
| 44 |
Versa Shore Inc.versashore.com
Specializing in transforming data into actionable intelligence using Oracle BI technology, providing world-class solutions, resources, staff augmentation, and software reselling services globally |
7 |
| 45 |
RAI Energyraienergy.com
Global energy development company delivering efficient solutions worldwide, specializing in solar projects, energy storage, and boosting plant productivity for clients globally |
7 |
| 46 |
Tico Coffee Roastersticoroasters.com
Craft roasting sustainable, exclusive, and unique Grand Cru coffees in small batches, importing the finest teas for freshness and consistency. Direct sourcing from producing countries. |
7 |
| 47 |
Nextbrick Inc.nextbrick.com
A technology services firm specializing in consulting for enterprise infrastructure, web content, big data, cloud solutions, and application development |
7 |
| 48 |
Heroic Technologiesheroictec.com
This company helps businesses transition to the cloud for mobile, secure, and flexible technology solutions, enabling growth and reducing stress |
5 |
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How this list is built
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.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668