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.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
United States × California × Corporate Services × $1,000 - $10,000 ×Clear Filters
Zventus is a global services provider of management consulting, staffing solutions, and outsourcing services that empower organizations to innovate, improve and grow their business...
Top Services:
BPO
Location
Los Angeles, California
Number of Employees
100 - 249
Average Hourly Rate
$20/hr
Minimal Budget
$1,000 - $10,000
Zventus Services
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Healthcare Industry
Insurance Industry
Fintech Industry
Data sourced from the agency's DesignRush profile
Zventus Reviews & Testimonials
Kaho Sakemi Review from Google
5.0★
Kaho Sakemi's Review Sourced from Google
Working at Zventus as a contractor has been one of the most insightful opportunities of my career. The projects I worked on were diverse and impactful, giving me hands-on experience in data analysis, marketing, and cross-functional collaboration. The leadership team is approachable, highly knowledgeable, and genuinely invested in helping you grow. The work culture is collaborative and supportive, making it easy to learn from colleagues and contribute meaningfully to company goals. I’ve gained valuable skills, industry knowledge, and professional connections that I hope to maintain with these individuals for years to come.
Harley Chen Review from Google
5.0★
Harley Chen's Review Sourced from Google
I have just completed my four-month internship as an Associate Consulting Intern at Zventus, and I highly recommend this company as a place to work and intern.As a college student eager to break into the business world, I found Zventus to be an incredible launchpad. It provided me with the opportunity to apply what I’ve learned in school to real-world, client-oriented projects, while also engaging directly with senior management. Most importantly, they truly listen to your ideas and feedback.During my internship, I contributed to a variety of projects including market research, data analysis, marketing resource creation, business strategy, financial forecasting, and even project management. This diverse experience has been invaluable in preparing me for my future career.I have now secured an internship with a Fortune 500 company. My experience at Zventus was instrumental in this achievement. Not only was it my first internship in the U.S.—which significantly enhanced my resume—but it also gave me the deep knowledge and practical experience that became the highlight of my interview discussions.Thank you for all the amazing people here, each one of them is absolutely amazing to work with!
Gabriela Saavedra Review from Google
1.0★
Gabriela Saavedra's Review Sourced from Google
I absolutely do not recommend working for this company. They are inefficient. If there is a problem, don't expect them to contact them, as they never show up. It seems like a school project where they never know what happened or who did what, and in the end, it's a collage of incomplete projects. They still want to pay the minimum and expect you to divide your time into three or four different activities. PLEASE DO NOT APPLY. This company is not worth it. They are inept, irresponsible, arrogant, and underpaid.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Liberty Liens is a reliable partner for doctors across the United States. We handle billing, lien filing, claim tracking, and day-to-day support to make the complex side of practice management easier, faster, and more dependable...
Top Services:
BPO
Location
Irvine, California
Number of Employees
100 - 249
Average Hourly Rate
$100/hr
Minimal Budget
$1,000 - $10,000
Liberty Liens Services
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
A new era of healthcare, a new world of practice well-being. We're redefining practice success at the crossroads of compassion and connectivity...
Top Services:
BPO
Software Development
Location
Newport Beach, California
Number of Employees
500 - 999
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Tebra Services
BPO
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
MGMA
Deloitte
AAFP
Data sourced from the agency's DesignRush profile
Tebra Reviews & Testimonials
Celia Gomes McGillivray Review from Google
5.0★
Celia Gomes McGillivray's Review Sourced from Google
The representative was awesome. However, I still have to wait 3-5 business days for my provider account to be added so that I can write prescriptions.
Kendra Cole Review from Google
5.0★
Kendra Cole's Review Sourced from Google
Our company has been very pleased with Talisman billing services. Our representative Kishor is very responsive whenever we have questions about patient co-pays or balances. We are very satisfied with their billing services and I would highly recommend them to others!
J B Review from Google
1.0★
J B's Review Sourced from Google
They are simply crooks. I told them multiple times to cancel my subscription and they continued to charge my credit card. Over $1000 in stolen charges. Hours on hold with a ridiculous inept customer service system that ran me in circles. I finally had to cancel my credit card. My emails were ignored. Stay away from this company.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
QuisLex is an award-winning alternative legal services provider that specializes in managed document review, contract management, compliance services, legal spend management, and legal operations consulting...
Top Services:
BPO
Business Consulting
Location
San Francisco, California
Number of Employees
1000 & Up
Average Hourly Rate
$20/hr
Minimal Budget
$1,000 - $10,000
Quislex Services
BPO
Business Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
AI-Enabled, Human-Validated Data Support, Engineered for Enterprises
SunTec Data is a global leader in AI-enabled data, BPO, and KPO solutions, backed by over 25 years of experience and 1,500+ data professionals across 50+ countries. Combining advanced AI tools with human-in-the-loop oversight, we deliver ISO-certified, HIPAA-compliant data management...
Top Services:
Market Research
BPO
Big Data Analytics
eCommerce
AI Development
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Location
Laguna Beach, California
Number of Employees
1000 & Up
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
1 Project Listed
SunTec Data Services
Market Research
BPO
Big Data Analytics
eCommerce
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
PepsiCo
nielsen
Network18
Deloitte
Expedia
Pearson
DXL
DKSH
Data sourced from the agency's DesignRush profile
SunTec Data Reviews & Testimonials
Victor Cook Financial Analyst at Financial Services Company
5.0★
BPO Review from Victor Cook
SunTec Data has been our outsourcing partner for the last three years. The team has considerably fueled our growth by providing financial data management and support.
Marc Hill Entrepreneur at Self-Employed
5.0★
BPO Review from Marc Hill
We were delighted with the results offered by SunTec Data. The team aptly understood our requirements and delivered high-quality data management solutions. Highly recommend them!
Mike Robinson Marketer at Undisclosed
5.0★
BPO Review from Mike Robinson
Great job done by the team! They analyzed our requirements, maintained transparent communication, and delivered tailored contact lists. Would definitely work with them in the future!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
GoJarvis matches growing businesses with pre-trained virtual assistants who handle operations, sales support, and inbox management — while building custom automations that make your business run faster...
Top Services:
BPO
HR Outsourcing
Customer Support
Phone Answering Services
Business Consulting
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Location
Brea, California
Number of Employees
Under 49
Average Hourly Rate
$10/hr
Minimal Budget
$1,000 - $10,000
Jarvis Services
BPO
HR Outsourcing
Customer Support
Phone Answering Services
Business Consulting
Social Media Marketing
Email Marketing
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts