Our industry experts ranked the leading BPO companies in California by their specialization, client reviews, average cost and more. Use the handy filter to find your service provider in a matter of clicks.

Best California BPO Service Providers Rankings

75 Companies - Rankings updated: March 31, 2026

Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.

United States × California ×
  • Scale Your Business With Quality Outsourced Teams In ‍Back Office Support.

    Scale Your Business With Quality Outsourced Teams In ‍Back Office Support.

    RPM stands out as a comprehensive solution provider, offering bilingual expertise in both English and Spanish, with the flexibility to provide full-time or part-time dedicated resources, fully managed to meet diverse operational needs. Our capabilities span a wide spectrum, encompassing intricate back-office  [... view RPM profile ]
    Location
    San Jose, California
    Number of Employees
    100 - 249
    Minimal Budget
    Under $1,000
  • Your Partner in Process Excellence

    Your Partner in Process Excellence

    Since 1992, Hitech BPO is an award winning ISO certified company, delivering business process outsourcing solutions, recognized by Dun & Bradstreet as a top BPO Company for four years in a row.  [... view Hi-Tech BPO profile ]
    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • True Partners Consulting

    True Partners Consulting

    Baker Tilly USA is a privately-owned, trusted project management, tax consulting, and business advisory firm that helps public and large private enterprises navigate complex tax and financial regulations everywhere in the world.  [... view Bakertilly profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
  • Smart, Scalable Virtual Assistants For Property Management & Customer Support

    Smart, Scalable Virtual Assistants For Property Management & Customer Support

    Switch360 is your dedicated partner in unleashing the full potential of your enterprise. Specializing in exceptional outsourcing solutions, we redefine the customer support landscape to propel your business toward unprecedented success. With a focus on digital dominance, we bring our expertise in short-term  [... view Switch360 profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
  • Redefining CX Excellence Through People, Technology and Expertise

    Redefining CX Excellence Through People, Technology and Expertise

    VSynergize is a Global Sales and Marketing services provider. The team is fully devoted to the success of its clients and partners, particularly when it comes to Customer Profiling, Content Creation & Syndication, Lead Generation & Nurturing, Demand Generation, Appointment Setting, BANT Leads, Delivering  [... view Vsynergize profile ]
    Location
    San Francisco, California
    Number of Employees
    500 - 999
    Portfolios Count
    2 Projects Listed
  • Your Customized Call Center Solution.

    Your Customized Call Center Solution.

    HIghPower call center is world renown near shore call center located in the heart of Tijuana minutes from the U.S border. Our team is bilingual, professional, and driven by performance goals. Our Call Center is second to none complete with a corporate structure and professional work environment.  [... view Highpower profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
  • 24 Hour Answering Services Company

    24 Hour Answering Services Company

    In business since 1979, Tel-Us Call Center offers a variety of inbound call center services customized to suit the needs of its clients. Our well-trained staff of bilingual agents is available 24/7/365.  [... view Tel-Us profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
  • Wondering How To Scale Your Business?

    Wondering How To Scale Your Business?

    FLINK Business Solutions is an outsourcing company specialized in back-office operations for insurance providers. We serve Insurance Carriers, MGAs, Brokers, & wholesale brokers. We’ve founded FLINK as an answer to the globally growing business demand for outsourcing and to provide business solutions to  [... view FLINK Business Solutions profile ]
    Location
    Santa Ana, California
    Number of Employees
    Under 49
  • Streamlining Your Operational Challenges

    Streamlining Your Operational Challenges

    GlobalityNet helps small and midsize companies reduce costs and thrive through supply chain and operations consultancy or through our outsourcing services. While based in Pasadena, CA, we have teams in the U.S. and globally to help you with your projects.  [... view GlobalityNet profile ]
    Location
    Pasadena, California
    Number of Employees
    Under 49
  • Your Trusted Outsourcing Firm for an End To End Bookkeeping and Accounting Services

    Your Trusted Outsourcing Firm for an End To End Bookkeeping and Accounting Services

    Cube Accounting Solutions bookkeeping firm based in Newport Beach is one of the most preferred outsourced end-to-end bookkeeping service providers.  [... view Cube Accounting profile ]
    Location
    Newport Beach, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
  • Build.Engage.Grow.

    Build.Engage.Grow.

    DAK IT HUB GROUP is a leading digital publisher that provides sales, lead generation & customer care services to our clients. We realize that single-channel cannot provide you with desired results. To ensure consistent quality and complete coverage, we utilize a multi-channel approach.  [... view DAK IT HUB profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
  • Your Trusted Offshore Back-office & Technology Solutions Partner

    Your Trusted Offshore Back-office & Technology Solutions Partner

    Technoheight is a fast-growing global BPM service provider that understands business operations has its challenges. With our solid team of talented professionals supported by the latest technologies, we provide end-to-end business process solutions that deliver results.  [... view TechnoHeight profile ]
    Location
    Santa Clara, California
    Number of Employees
    100 - 249
  • A Digital Marketing Agency Led by Upworks Top-Rated Freelancers.

    A Digital Marketing Agency Led by Upworks Top-Rated Freelancers.

    We are dynamic and versatile team of digital marketing experts who bring together diverse talents and experiences to deliver exceptional results for our clients.  [... view Branding Hosts profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Efficient, Customized Services For Healthcare Providers Treating Injured Workers

    Efficient, Customized Services For Healthcare Providers Treating Injured Workers

    Medrina Technology Management specializes in workers' compensation billing, collections, lien management, and medical transcription. We streamline revenue cycles, reduce administrative burdens, and ensure compliance, enabling healthcare providers to focus on patient care while we handle billing complexities.  [... view Medrina Technology Management Pvt Ltd profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $12/hr
    Minimal Budget
    $1,000 - $10,000
  • Building trust in society and solving important problems.

    Building trust in society and solving important problems.

    We’re a network of firms in 155 countries with over 284,000 people who are committed to delivering quality in BPO, project management, assurance, advisory, IT, and tax services.  [... view PwC profile ]
    Location
    Orange County, California
    Number of Employees
    1000 & Up
  • Bringing Business Services To Cloud Precision

    Bringing Business Services To Cloud Precision

    eNoah iSolution is a global IT and BPO services firm with over 18 years in operation. Certified in ISO27001 (and HIPAA compliant), the company employs more than 1,800 professionals across six countries. It supports clients in over 20 verticals including several Fortune500 companies offering secure business  [... view ENoah ISolutions Inc profile ]
    Location
    Westlake Village, California
    Number of Employees
    1000 & Up
  • Empowering Your Accounting Decisions.

    Empowering Your Accounting Decisions.

    Crowe LLP is a global accounting firm offering audit, tax, advisory, and consulting services. With deep industry expertise, we empower businesses to make informed decisions for lasting value. Recognized as a top workplace, we leverage our partnership with Crowe Global to provide comprehensive solutions  [... view Crowe profile ]
    Location
    Los Angeles, California
    Number of Employees
    1000 & Up
  • Empowering Organizations Through Digital Innovation and Customer Experience.

    Empowering Organizations Through Digital Innovation and Customer Experience.

    Tru Performance is a global technology consulting and services company, supported by a team of over 125 associates across 5 locations worldwide.  [... view Tru Performance profile ]
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
  • Digital Intelligent Solutions

    Digital Intelligent Solutions

    OSP is a healthcare technology company dedicated to transforming the industry through innovative digital solutions. With more than 16 years of experience and a team of skilled healthtech experts, OSP helps healthcare organizations improve performance, efficiency, and patient care through advanced technology.  [... view OSP Labs profile ]
    Location
    San Diego, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
  • Elevating Business Efficiency. Driving Success.

    Elevating Business Efficiency. Driving Success.

    SkyTech Solutions is a leading business process outsourcing (BPO) firm specializing in comprehensive outsourcing services. With expertise in inbound and outbound call center solutions, customer support, lead generation, digital marketing, and back-office support, the agency optimizes operations for businesses  [... view SkyTech Solutions profile ]
    Location
    Los Angeles, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Qualified Appointments for Sales Success

    Qualified Appointments for Sales Success

    WC Call Center excels in business-to-business (B2B) appointment setting and telemarketing, focusing on generating high-quality appointments with C-level executives. Its experienced professionals ensure each appointment meets rigorous qualification standards and drives new sales opportunities. The firm acts as  [... view WC Call Center profile ]
    Location
    Modesto, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Efficient Outsourcing for Global Success

    Efficient Outsourcing for Global Success

    Redial BPO delivers top-tier business process outsourcing (BPO) solutions focused on cost reduction and cultural alignment. Established in 2017, the firm operates across four locations in Mexico and South Africa, offering significant savings and advanced technology. Its nearshore and offshore services provide  [... view Redial BPO profile ]
    Location
    San Diego, California
    Number of Employees
    500 - 999
    Minimal Budget
    $50,000 & Up
  • Empowering Connections, Transforming Experiences.

    Empowering Connections, Transforming Experiences.

    Five9 delivers comprehensive CCaaS solutions, empowering businesses to create exceptional customer experiences through expert support, advanced technology, and customer-focused strategies.  [... view Five9, Inc profile ]
    Location
    San Ramon, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $149/hr
  • Passion for People, Excellence in Service

    Passion for People, Excellence in Service

    A minority-owned BPO company specializing in customer service, sales, and recruitment process outsourcing. Leveraging award-winning innovations in training and coaching, the agency delivers exceptional customer experiences while boosting satisfaction, loyalty, and operational efficiency.  [... view One Contact Center profile ]
    Location
    Thousand Oaks, California
    Number of Employees
    500 - 999
    Minimal Budget
    $1,000 - $10,000

About The Author and Expert Reviewer

Bojana Trajcheva is a seasoned content editor and innovation researcher with extensive experience in the tech and marketing industries. Formerly Editor-in-Chief at Studentsko Eho, she developed a strong foundation in content creation and editorial leadership. Bojana further honed her skills in senior innovation research roles and now brings this combined expertise to her work as an editor at DesignRush.

Gianluca Ferruggia is a seasoned digital marketer with over ten years of experience. Starting with PPC, he effectively expanded his expertise to include SEO, sales, business development, and product. He is currently the General Manager at DesignRush, where he leads a team of over 100 professionals, oversees business operations, and develops strategies that achieve business goals. In just a few years, he grew the company's agency network to over 30,000, making it one of the leading B2B marketplaces that connect businesses with agencies.