# The 50 largest private equity-backed companies in California

Tamtam tracks 72 private equity-backed companies headquartered in California. This list ranks the 50 largest by number of employees on LinkedIn, led by VXI Global Solutions, DIRECTV and R Systems. Their median headcount is 912. Half of them were founded in 1996 or later. The most common headquarters are Santa Clara (5), El Segundo (4) and Irvine (4).

These private equity-backed companies in California are mostly mid-sized to large firms, with a strong presence in IT services and software development. Notable companies include VXI Global Solutions, a BPO leader, and DIRECTV, which provides television content. R Systems, Infogain, and Xoriant are prominent in IT services, while Infinx specializes in healthcare solutions.

A significant cluster of these companies, such as R Systems, Infogain, Xoriant, Apexon, Coupa, Cloudera, TIBCO, and Barracuda, are headquartered in the greater San Francisco Bay Area, indicating a concentration of tech-focused firms in that region. There is also a mix of industries, including entertainment, healthcare, and construction.

🇺🇸 California · 50 companies · Updated Nov 15, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [VXI Global Solutions](https://www.tamtam.ai/c/vxi-global-solutions) (vxi.com)<br>BPO leader offering customer service & digital solutions worldwide, with focus on omni-channel support, automation, & revenue generation for top brands | Outsourcing and Offshoring Consulting | 🇺🇸 Los Angeles | 22,830 |  |
| 2 | [DIRECTV](https://www.tamtam.ai/c/directv) (directv.com)<br>Provides high-quality television content and personalized video services across multiple screens, utilizing emerging technologies to deliver reliable entertainment for passionate superfans everywhere. | Entertainment Providers | 🇺🇸 El Segundo | 15,343 | 1994 |
| 3 | [R Systems](https://www.tamtam.ai/c/r-systems) (rsystems.com)<br>Global provider of product engineering, digital solutions, AI, cloud-native capabilities, automation, and strategic growth support for diverse industries. | IT Services and IT Consulting | 🇺🇸 El Dorado Hills | 6,833 | 1993 |
| 4 | [Infogain](https://www.tamtam.ai/c/infogain) (infogain.com)<br>Infogain specializes in digital customer experience engineering, delivering solutions for Fortune 500 companies across various industries using advanced technologies. | IT Services and IT Consulting | 🇺🇸 Los Gatos | 6,161 |  |
| 5 | [Xoriant](https://www.tamtam.ai/c/xoriant) (xoriant.com)<br>Xoriant is a global digital engineering firm that turns imaginative visions into realities, accelerating business outcomes with innovative technology solutions | IT Services and IT Consulting | 🇺🇸 Sunnyvale | 5,220 | 1990 |
| 6 | [Infinx](https://www.tamtam.ai/c/infinx) (infinx.com)<br>Innovative healthcare company offering scalable prior authorization and revenue cycle management solutions, using AI-driven software and billing specialists to optimize revenue capture | Hospitals and Health Care | 🇺🇸 Cupertino | 5,195 | 2012 |
| 7 | [Apexon](https://www.tamtam.ai/c/apexon) (apexon.com)<br>Digital-first technology services firm specializing in accelerating business transformation through human-centric digital experiences Expertise in UX/UI, engineering, data, focusing on BFSI, healthcare, and life sciences | IT Services and IT Consulting | 🇺🇸 Santa Clara | 4,339 |  |
| 8 | [Restaurant365](https://www.tamtam.ai/c/restaurant365) (restaurant365.com)<br>cloud-based platform for restaurant accounting, inventory, workforce management, payroll, and integrations to optimize operations and improve guest experiences | Software Development | 🇺🇸 Irvine | 3,986 | 2011 |
| 9 | [California Pizza Kitchen](https://www.tamtam.ai/c/california-pizza-kitchen) (cpk.com)<br>A global brand known for innovative California-style cuisine, featuring creative pizzas and a unique dining experience in over 14 countries | Restaurants | 🇺🇸 Costa Mesa | 3,841 | 1985 |
| 10 | [Coupa](https://www.tamtam.ai/c/coupa) (coupa.com)<br>Community-driven AI platform leveraging extensive spend data to optimize business decisions, enhancing profitability and operational margins for companies. | Software Development | 🇺🇸 Foster City | 3,715 | 2006 |
| 11 | [Legence](https://www.tamtam.ai/c/legence) (wearelegence.com)<br>Integrated provider of energy efficiency and sustainability solutions for diverse industries, specializing in advisory, engineering, contracting, and maintenance services for high-performance facilities | Construction | 🇺🇸 San Jose | 3,648 |  |
| 12 | [Cloudera](https://www.tamtam.ai/c/cloudera) (cloudera.com)<br>Empowering individuals to unlock insights from complex data, delivering an enterprise data cloud solution for all data sources, from Edge to AI | Software Development | 🇺🇸 Santa Clara | 3,442 | 2008 |
| 13 | [Cubic Corporation](https://www.tamtam.ai/c/cubic-corporation) (cubic.com)<br>The company creates technology solutions in transportation to simplify daily journeys and defense capabilities to promote mission success and safety | IT Services and IT Consulting | 🇺🇸 San Diego | 3,095 |  |
| 14 | [TIBCO](https://www.tamtam.ai/c/tibco) (tibco.com)<br>Industrial-strength software solutions delivering high performance, reliability, and scalability through technology deployment options to address mission-critical business challenges and real-time data needs. | Software Development | 🇺🇸 Santa Clara | 2,334 |  |
| 15 | [Barracuda](https://www.tamtam.ai/c/barracuda) (barracuda.com)<br>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. | Computer and Network Security | 🇺🇸 Campbell | 2,263 |  |
| 16 | [Kofax](https://www.tamtam.ai/c/kofax) (tungstenautomation.com)<br>It is a leader in intelligent workflow automation, serving thousands of customers globally, with a strong commitment to innovation and efficiency. | Software Development | 🇺🇸 Irvine | 1,437 | 1985 |
| 17 | [True Religion](https://www.tamtam.ai/c/true-religion) (truereligion.com)<br>It crafts unique denim, aiming to influence culture through innovative design and craftsmanship, embracing individuality and challenging conventions in fashion. | Retail Apparel and Fashion | 🇺🇸 El Segundo | 1,429 | 2002 |
| 18 | [Dreyer's Grand Ice Cream](https://www.tamtam.ai/c/dreyer-s-grand-ice-cream) (dreyersgrandicecream.com)<br>A leading ice cream business in the US, part of a global team with a strong portfolio of beloved brands Passionate about innovation and excellence | Manufacturing | 🇺🇸 Walnut Creek | 1,252 | 1928 |
| 19 | [WSO2](https://www.tamtam.ai/c/wso2) (wso2.com)<br>Provides foundational open source platforms for enterprises to build, integrate, and scale AI-first experiences, securing digital identities and accelerating innovation. | Software Development | 🇺🇸 Santa Clara | 1,239 | 2005 |
| 20 | [DOLE Fresh Vegetables](https://www.tamtam.ai/c/dole-fresh-vegetables) (dole.com)<br>A global team committed to providing safe, high-quality fresh fruit and vegetables, while protecting the environment and ensuring food safety | Food and Beverage Manufacturing | 🇺🇸 Monterey | 1,162 | 1943 |
| 21 | [Robosoft Technologies](https://www.tamtam.ai/c/robosoft-technologies) (robosoftin.com)<br>Robosoft Technologies is a leading digital transformation partner, specializing in digital product strategy, design, development, testing, cybersecurity, and data science for various industries globally | IT Services and IT Consulting | 🇺🇸 San Francisco | 1,085 | 1996 |
| 22 | [Prospect Mortgage, LLC](https://www.tamtam.ai/c/prospect-mortgage-llc)<br>A leading residential mortgage lender offering a range of loan products and exceptional service, backed by a growth-focused private equity firm | Financial Services | 🇺🇸 Sherman Oaks | 1,008 | 2007 |
| 23 | [Stratford School](https://www.tamtam.ai/c/stratford-school) (stratfordschools.com)<br>Leading independent WASC-accredited private school in California offering preschool through 12th grade education with a focus on individualized learning and STEAM curriculum | Education Administration Programs | 🇺🇸 Campbell | 957 | 1999 |
| 24 | [K2 Insurance Services](https://www.tamtam.ai/c/k2-insurance-services) (k2ins.com)<br>Specialty insurance services company focused on strategic acquisitions to diversify earnings and enhance distribution economics, offering innovative products through various channels | Insurance | 🇺🇸 San Diego | 930 |  |
| 25 | [Blue Star Infotech](https://www.tamtam.ai/c/blue-star-infotech) (infogain.com)<br>A Silicon Valley based company specializing in digital platform and software engineering for various industries, with a focus on design-led transformation and customer engagement systems | IT Services and IT Consulting | 🇺🇸 Santa Clara | 912 | 1983 |
| 26 | [KabaFusion](https://www.tamtam.ai/c/kabafusion) (kabafusion.com)<br>Specializing in infusion therapy, we prioritize patient care by offering comprehensive services, including IVIG therapy, with trained professionals and multiple nationwide locations | Hospitals and Health Care | 🇺🇸 Cerritos | 821 | 2009 |
| 27 | [NEOGOV](https://www.tamtam.ai/c/neogov) (neogov.com)<br>NEOGOV provides comprehensive software solutions for government, public safety, and education organizations to attract, retain, and develop top talent, enhancing productivity and efficiency | Software Development | 🇺🇸 El Segundo | 821 |  |
| 28 | [Pelican Products, Inc.](https://www.tamtam.ai/c/pelican-products-inc) (pelican.com)<br>Global leader in designing and manufacturing high-performance protective cases, temperature-controlled packaging solutions, portable lighting systems, and rugged gear for professionals and outdoor enthusiasts | Packaging and Containers Manufacturing | 🇺🇸 Torrance | 815 | 1976 |
| 29 | [One Identity](https://www.tamtam.ai/c/one-identity) (oneidentity.com)<br>Unifying identity governance, privileged access, and access management for organizations; strengthens identity perimeter, protects against breaches, ensures governance and compliance. | Software Development | 🇺🇸 Aliso Viejo | 737 |  |
| 30 | [Spring Education Group](https://www.tamtam.ai/c/spring-education-group) (springeducationgroup.com)<br>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 | Education Administration Programs | 🇺🇸 Campbell | 654 |  |
| 31 | [Prodege, LLC](https://www.tamtam.ai/c/prodege-llc) (prodege.com)<br>Platform providing marketing insights and consumer data to help brands acquire customers, increase revenue, and drive loyalty. | Market Research | 🇺🇸 El Segundo | 627 | 2005 |
| 32 | [Mattson Technology](https://www.tamtam.ai/c/mattson-technology) (mattson.com)<br>Semiconductor wafer processing equipment manufacturer providing innovative technology solutions to global memory and logic device manufacturers for advanced semiconductor fabrication | Semiconductor Manufacturing | 🇺🇸 Fremont | 623 |  |
| 33 | [Jumio Corporation](https://www.tamtam.ai/c/jumio-corporation) (jumio.com)<br>Provides AI-powered identity intelligence, anchored in biometric authentication and automation, to establish and maintain trust for organizations and fight fraud. | Software Development | 🇺🇸 Sunnyvale | 613 | 2010 |
| 34 | [Planful](https://www.tamtam.ai/c/planful) (planful.com)<br>Helps businesses streamline planning, budgeting, consolidations, reporting, and analytics through cloud software to drive peak financial performance. | Software Development | 🇺🇸 San Francisco | 546 |  |
| 35 | [Therma](https://www.tamtam.ai/c/therma) (therma.com)<br>Maximizing energy efficiency through engineering, construction, installation, and maintenance of mechanical and plumbing systems for complex built environments and manufacturing facilities. | Facilities Services | 🇺🇸 San Jose | 528 |  |
| 36 | [Gersh](https://www.tamtam.ai/c/gersh) (gersh.com)<br>A leading talent and literary agency representing award-winning actors, writers, producers, and directors in various entertainment fields for over seven decades | Entertainment Providers | 🇺🇸 Beverly Hills | 508 | 1949 |
| 37 | [BioDuro](https://www.tamtam.ai/c/bioduro) (bioduro.com)<br>Provides integrated contract research, development, and manufacturing services to biotech and pharma partners, supporting drug discovery to commercial manufacturing globally. | Pharmaceutical Manufacturing | 🇺🇸 Irvine | 476 | 1996 |
| 38 | [Bridgepointe Technologies](https://www.tamtam.ai/c/bridgepointe-technologies) (bridgepointetechnologies.com)<br>Tech advisory firm bridging tech investments and business goals for mid-market and enterprise clients Streamlining procurement, reducing costs, and optimizing ROI | IT Services and IT Consulting | 🇺🇸 San Mateo | 473 | 2002 |
| 39 | [Golden West Packaging Group](https://www.tamtam.ai/c/golden-west-packaging-group) (goldenwestpackaging.com)<br>Leading provider of customized packaging solutions in North America, offering a wide range of high-quality packaging products to help customers sell more products effectively | Packaging and Containers Manufacturing | 🇺🇸 Industry | 455 | 2017 |
| 40 | [Intecsa Group](https://www.tamtam.ai/c/intecsa-group) (intecsa.eu)<br>A Spanish engineering company specializing in transport, ports, logistics, building, water, and environment projects with global presence in multiple countries | Civil Engineering | 🇺🇸 Los Angeles | 453 | 1965 |
| 41 | [HEAT Software](https://www.tamtam.ai/c/heat-software) (ivanti.com)<br>A leading provider of Cloud Service Management and Unified Endpoint Management solutions, empowering organizations to automate business processes and proactively protect against threats | Software Development | 🇺🇸 Milpitas | 451 | 1989 |
| 42 | [Auction.com](https://www.tamtam.ai/c/auction-com) (auction.com)<br>Leading online platform for foreclosure, bank-owned real estate auctions, making homeownership accessible through transparency, technology, and care for neighborhoods, buyers, sellers. | Real Estate | 🇺🇸 Irvine | 433 | 2007 |
| 43 | [Topgolf Callaway Brands](https://www.tamtam.ai/c/topgolf-callaway-brands) (topgolfcallawaybrands.com)<br>A tech-enabled Modern Golf and active lifestyle company with global brands offering both on-course and off-course golf experiences | Entertainment Providers | 🇺🇸 Carlsbad | 405 |  |
| 44 | [BioMed Realty](https://www.tamtam.ai/c/biomed-realty) (biomedrealty.com)<br>A real estate solutions provider specializing in high-quality life science and technology properties in key innovation markets in the US and UK | Real Estate | 🇺🇸 San Diego | 398 | 2004 |
| 45 | [Gold Star Foods](https://www.tamtam.ai/c/gold-star-foods) (goldstarfoods.com)<br>A leading provider of wholesome food supporting K-12 School Nutrition Programs with supply systems and personalized customer service for millions of students daily | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Ontario | 367 | 1979 |
| 46 | [Glu Mobile](https://www.tamtam.ai/c/glu-mobile) (ea.com)<br>A leading developer and publisher of mobile games, specializing in creating top-grossing and award-winning original and licensed titles for worldwide platforms | Mobile Gaming Apps | 🇺🇸 Redwood City | 365 | 2001 |
| 47 | [HealthComp](https://www.tamtam.ai/c/healthcomp) (personifyhealth.com)<br>HealthComp is a leading third-party administrator specializing in providing customizable healthcare solutions, including medical, dental, vision, COBRA, and other benefits | Insurance | 🇺🇸 Fresno | 364 | 1994 |
| 48 | [Diamond Foods, LLC](https://www.tamtam.ai/c/diamond-foods-llc) (diamondnuts.com)<br>A California-based company with a 100+ year history of providing high-quality nuts for family recipes, now focusing on plant-based products | Food and Beverage Services | 🇺🇸 Stockton | 364 | 1912 |
| 49 | [Careismatic Brands](https://www.tamtam.ai/c/careismatic-brands) (careismatic.com)<br>Designs, manufactures, and sells a global portfolio of medical uniforms and healthcare apparel brands through various business-to-business, e-commerce, and direct-to-consumer channels. | Retail Apparel and Fashion | 🇺🇸 Sherman Oaks | 361 | 1995 |
| 50 | [Evergreen](https://www.tamtam.ai/c/evergreen) (evergreensg.com)<br>Private-equity backed holding company acquiring and holding services and software companies, empowering management teams for growth and stewarding legacies | Holding Companies | 🇺🇸 San Francisco | 351 | 2017 |

## 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 Nov 15, 2026.

## More company lists in California

- [The largest companies in California](https://www.tamtam.ai/l/largest-companies-california) (15,256)
- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,587)
- [SaaS companies in California](https://www.tamtam.ai/l/saas-companies-california) (1,854)
- [Software Development companies in California](https://www.tamtam.ai/l/software-development-companies-california) (1,649)
- [AI companies in California](https://www.tamtam.ai/l/ai-companies-california) (1,296)
- [Companies with in-house R&D in California](https://www.tamtam.ai/l/r-and-d-companies-california) (1,272)
- [Manufacturers in California](https://www.tamtam.ai/l/manufacturers-california) (1,065)
- [Hardware manufacturers in California](https://www.tamtam.ai/l/hardware-companies-california) (984)
- [IT Services and IT Consulting companies in California](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-california) (968)
- [Education providers in California](https://www.tamtam.ai/l/education-companies-california-united-states) (950)
- [Subscription businesses in California](https://www.tamtam.ai/l/subscription-businesses-california) (939)
- [Venture capital and private equity firms in California](https://www.tamtam.ai/l/vc-and-private-equity-firms-california) (917)
- [Professional services firms in California](https://www.tamtam.ai/l/professional-services-firms-california) (880)
- [Companies with a mobile app in California](https://www.tamtam.ai/l/companies-with-mobile-app-california) (827)
- [Retail chains in California](https://www.tamtam.ai/l/retail-chains-california) (802)
- [IT services companies in California](https://www.tamtam.ai/l/it-services-companies-california) (796)
- [Venture Capital and Private Equity Principals companies in California](https://www.tamtam.ai/l/venture-capital-and-private-equity-principals-companies-california) (731)
- [Financial services firms in California](https://www.tamtam.ai/l/financial-services-firms-california) (711)
- [Financial Services companies in California](https://www.tamtam.ai/l/financial-services-companies-california) (642)
- [Healthcare providers in California](https://www.tamtam.ai/l/healthcare-providers-california) (569)
- [AI-native companies in California](https://www.tamtam.ai/l/ai-native-companies-california) (561)
- [Hospitals and Health Care companies in California](https://www.tamtam.ai/l/hospitals-and-health-care-companies-california) (555)
- [Consulting firms in California](https://www.tamtam.ai/l/consulting-firms-california) (551)
- [Public sector organisations in California](https://www.tamtam.ai/l/public-sector-organisations-california) (536)

## The same list elsewhere in United States

- [Private equity-backed companies in the United States](https://www.tamtam.ai/l/private-equity-backed-companies-united-states) (579)
- [Private equity-backed companies in Texas](https://www.tamtam.ai/l/private-equity-backed-companies-texas) (75)
- [Private equity-backed companies in New York State](https://www.tamtam.ai/l/private-equity-backed-companies-new-york-state) (45)
- [Private equity-backed companies in Florida](https://www.tamtam.ai/l/private-equity-backed-companies-florida) (44)
- [Private equity-backed companies in Illinois](https://www.tamtam.ai/l/private-equity-backed-companies-illinois) (33)
- [Private equity-backed companies in Massachusetts](https://www.tamtam.ai/l/private-equity-backed-companies-massachusetts) (29)
- [Private equity-backed companies in North Carolina](https://www.tamtam.ai/l/private-equity-backed-companies-north-carolina) (25)
- [Private equity-backed companies in New York](https://www.tamtam.ai/l/private-equity-backed-companies-new-york) (39)

## The same list elsewhere

- [Private equity-backed companies in the world](https://www.tamtam.ai/l/private-equity-backed-companies-in-the-world) (1,497)

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Source: https://www.tamtam.ai/l/private-equity-backed-companies-california