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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).

馃嚭馃嚫 California50 companiesUpdated Nov 15, 2026

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.

#CompanyIndustryHeadquarters EmployeesFounded
1
VXI Global Solutionsvxi.com

BPO leader offering customer service & digital solutions worldwide, with focus on omni-channel support, automation, & revenue generation for top brands

Outsourcing and Offshoring Consulting 馃嚭馃嚫 Los Angeles 22,830 n/a
2
DIRECTVdirectv.com

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 馃嚭馃嚫 El Segundo 15,343 1994
3
R Systemsrsystems.com

Global provider of product engineering, digital solutions, AI, cloud-native capabilities, automation, and strategic growth support for diverse industries.

IT Services and IT Consulting 馃嚭馃嚫 El Dorado Hills 6,833 1993
4
Infogaininfogain.com

Infogain specializes in digital customer experience engineering, delivering solutions for Fortune 500 companies across various industries using advanced technologies.

IT Services and IT Consulting 馃嚭馃嚫 Los Gatos 6,161 n/a
5
Xoriantxoriant.com

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 馃嚭馃嚫 Sunnyvale 5,220 1990
6
Infinxinfinx.com

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 馃嚭馃嚫 Cupertino 5,195 2012
7
Apexonapexon.com

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 馃嚭馃嚫 Santa Clara 4,339 n/a
8
Restaurant365restaurant365.com

cloud-based platform for restaurant accounting, inventory, workforce management, payroll, and integrations to optimize operations and improve guest experiences

Software Development 馃嚭馃嚫 Irvine 3,986 2011
9
California Pizza Kitchencpk.com

A global brand known for innovative California-style cuisine, featuring creative pizzas and a unique dining experience in over 14 countries

Restaurants 馃嚭馃嚫 Costa Mesa 3,841 1985
10
Coupacoupa.com

Community-driven AI platform leveraging extensive spend data to optimize business decisions, enhancing profitability and operational margins for companies.

Software Development 馃嚭馃嚫 Foster City 3,715 2006
11
Legencewearelegence.com

Integrated provider of energy efficiency and sustainability solutions for diverse industries, specializing in advisory, engineering, contracting, and maintenance services for high-performance facilities

Construction 馃嚭馃嚫 San Jose 3,648 n/a
12
Clouderacloudera.com

Empowering individuals to unlock insights from complex data, delivering an enterprise data cloud solution for all data sources, from Edge to AI

Software Development 馃嚭馃嚫 Santa Clara 3,442 2008
13
Cubic Corporationcubic.com

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 馃嚭馃嚫 San Diego 3,095 n/a
14
TIBCOtibco.com

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 馃嚭馃嚫 Santa Clara 2,334 n/a
15
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.

Computer and Network Security 馃嚭馃嚫 Campbell 2,263 n/a
16
Kofaxtungstenautomation.com

It is a leader in intelligent workflow automation, serving thousands of customers globally, with a strong commitment to innovation and efficiency.

Software Development 馃嚭馃嚫 Irvine 1,437 1985
17
True Religiontruereligion.com

It crafts unique denim, aiming to influence culture through innovative design and craftsmanship, embracing individuality and challenging conventions in fashion.

Retail Apparel and Fashion 馃嚭馃嚫 El Segundo 1,429 2002
18
Dreyer's Grand Ice Creamdreyersgrandicecream.com

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 馃嚭馃嚫 Walnut Creek 1,252 1928
19
WSO2wso2.com

Provides foundational open source platforms for enterprises to build, integrate, and scale AI-first experiences, securing digital identities and accelerating innovation.

Software Development 馃嚭馃嚫 Santa Clara 1,239 2005
20
DOLE Fresh Vegetablesdole.com

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 馃嚭馃嚫 Monterey 1,162 1943
21
Robosoft Technologiesrobosoftin.com

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 馃嚭馃嚫 San Francisco 1,085 1996
22
Prospect Mortgage, LLC

A leading residential mortgage lender offering a range of loan products and exceptional service, backed by a growth-focused private equity firm

Financial Services 馃嚭馃嚫 Sherman Oaks 1,008 2007
23
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

Education Administration Programs 馃嚭馃嚫 Campbell 957 1999
24
K2 Insurance Servicesk2ins.com

Specialty insurance services company focused on strategic acquisitions to diversify earnings and enhance distribution economics, offering innovative products through various channels

Insurance 馃嚭馃嚫 San Diego 930 n/a
25
Blue Star Infotechinfogain.com

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 馃嚭馃嚫 Santa Clara 912 1983

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26
KabaFusionkabafusion.com

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 馃嚭馃嚫 Cerritos 821 2009
27
NEOGOVneogov.com

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 馃嚭馃嚫 El Segundo 821 n/a
28
Pelican Products, Inc.pelican.com

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 馃嚭馃嚫 Torrance 815 1976
29
One Identityoneidentity.com

Unifying identity governance, privileged access, and access management for organizations; strengthens identity perimeter, protects against breaches, ensures governance and compliance.

Software Development 馃嚭馃嚫 Aliso Viejo 737 n/a
30
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

Education Administration Programs 馃嚭馃嚫 Campbell 654 n/a
31
Prodege, LLCprodege.com

Platform providing marketing insights and consumer data to help brands acquire customers, increase revenue, and drive loyalty.

Market Research 馃嚭馃嚫 El Segundo 627 2005
32
Mattson Technologymattson.com

Semiconductor wafer processing equipment manufacturer providing innovative technology solutions to global memory and logic device manufacturers for advanced semiconductor fabrication

Semiconductor Manufacturing 馃嚭馃嚫 Fremont 623 n/a
33
Jumio Corporationjumio.com

Provides AI-powered identity intelligence, anchored in biometric authentication and automation, to establish and maintain trust for organizations and fight fraud.

Software Development 馃嚭馃嚫 Sunnyvale 613 2010
34
Planfulplanful.com

Helps businesses streamline planning, budgeting, consolidations, reporting, and analytics through cloud software to drive peak financial performance.

Software Development 馃嚭馃嚫 San Francisco 546 n/a
35
Thermatherma.com

Maximizing energy efficiency through engineering, construction, installation, and maintenance of mechanical and plumbing systems for complex built environments and manufacturing facilities.

Facilities Services 馃嚭馃嚫 San Jose 528 n/a
36
Gershgersh.com

A leading talent and literary agency representing award-winning actors, writers, producers, and directors in various entertainment fields for over seven decades

Entertainment Providers 馃嚭馃嚫 Beverly Hills 508 1949
37
BioDurobioduro.com

Provides integrated contract research, development, and manufacturing services to biotech and pharma partners, supporting drug discovery to commercial manufacturing globally.

Pharmaceutical Manufacturing 馃嚭馃嚫 Irvine 476 1996
38
Bridgepointe Technologiesbridgepointetechnologies.com

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 馃嚭馃嚫 San Mateo 473 2002
39
Golden West Packaging Groupgoldenwestpackaging.com

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 馃嚭馃嚫 Industry 455 2017
40
Intecsa Groupintecsa.eu

A Spanish engineering company specializing in transport, ports, logistics, building, water, and environment projects with global presence in multiple countries

Civil Engineering 馃嚭馃嚫 Los Angeles 453 1965
41
HEAT Softwareivanti.com

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 馃嚭馃嚫 Milpitas 451 1989
42
Auction.comauction.com

Leading online platform for foreclosure, bank-owned real estate auctions, making homeownership accessible through transparency, technology, and care for neighborhoods, buyers, sellers.

Real Estate 馃嚭馃嚫 Irvine 433 2007
43
Topgolf Callaway Brandstopgolfcallawaybrands.com

A tech-enabled Modern Golf and active lifestyle company with global brands offering both on-course and off-course golf experiences

Entertainment Providers 馃嚭馃嚫 Carlsbad 405 n/a
44
BioMed Realtybiomedrealty.com

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 馃嚭馃嚫 San Diego 398 2004
45
Gold Star Foodsgoldstarfoods.com

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 馃嚭馃嚫 Ontario 367 1979
46
Glu Mobileea.com

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 馃嚭馃嚫 Redwood City 365 2001
47
HealthComppersonifyhealth.com

HealthComp is a leading third-party administrator specializing in providing customizable healthcare solutions, including medical, dental, vision, COBRA, and other benefits

Insurance 馃嚭馃嚫 Fresno 364 1994
48
Diamond Foods, LLCdiamondnuts.com

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 馃嚭馃嚫 Stockton 364 1912
49
Careismatic Brandscareismatic.com

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 馃嚭馃嚫 Sherman Oaks 361 1995
50
Evergreenevergreensg.com

Private-equity backed holding company acquiring and holding services and software companies, empowering management teams for growth and stewarding legacies

Holding Companies 馃嚭馃嚫 San Francisco 351 2017

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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 Nov 15, 2026.

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