Looking for staff augmentation services in California to enhance your team's capabilities? DesignRush is here to help you connect with trusted agencies that have partnered with brands like VMware and Pizza Hut. With over 1M monthly visitors and 40,000+ vetted agencies, our platform is designed to help you find the right talent for your needs. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.

Best California Staff Augmentation Company Rankings

121 Companies-Rankings updated: August 19, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

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  • BairesDev

    Software Outsourcing & Development | 500+ Active Clients

    Software Outsourcing & Development | 500+ Active Clients

    Founded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed
    View Profile
    4.8 4.8 (8)
    3.9 3.9 (32)

  • M TECHUB LLC

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    M TECHUB LLC, Where Ideas Become Scalable Digital Products

    M TECHUB LLC, Where Ideas Become Scalable Digital Products

    M TECHUB LLC Leading Mobile App Development & Staff Augmentation Company in the USA...

    Top Services:

    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • AI Development
    • Web Development
    • Show more
    Location
    Mountain View, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    20 Projects Listed
    View Profile
    4.8 4.8 (8)

  • TechAhead

    AI-Native App & Enterprise Software Development Company

    AI-Native App & Enterprise Software Development Company

    TechAhead, a global leader in AI-powered custom software development & cloud engineering services, trusted by Fortune 500 companies and enterprises worldwide. We are a Great Place to Work-certified company with 240+ experts and 16 years of experience in engineering innovative, scalable applications...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • IoT
    • Staff Augmentation
    • Show more
    Location
    Agoura Hills, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    26 Projects Listed
    View Profile
    4.8 4.8 (7)
    4.8 4.8 (18)

  • Developer Bazaar Technologies

    AI-Native Product Engineering Company

    AI-Native Product Engineering Company

    Developer Bazaar Technologies is a Top AI Development company building custom Mobile App & Software Development and specializing in building AI Solutions delivering mesurable outcome...

    Top Services:

    • Mobile App Development
    • eCommerce Development
    • Software Development
    • IT Services
    • Staff Augmentation
    • Show more
    Location
    Fremont, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
    View Profile
    4.8 4.8 (7)
    4.8 4.8 (26)

  • Dreamsoft4u

    Leading the AI Revolution in Healthcare & Enterprise Solutions

    Leading the AI Revolution in Healthcare & Enterprise Solutions

    Next-Generation AI Development Company - Transforming Ideas into Intelligent RealityDreamSoft4u is pioneering the future of AI-powered software development with cutting-edge Generative AI solutions that deliver measurable business impact...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • IoT
    • AI Development
    • Show more
    Location
    Corona, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    18 Projects Listed
    View Profile
    4.8 4.8 (6)

  • Aristek Systems

    AI is easy. Systems are hard. We build systems.

    AI is easy. Systems are hard. We build systems.

    AI is easy. Systems are hard. We build systems...

    Top Services:

    • Software Development
    • AI Development
    • Staff Augmentation
    • Cloud Consulting
    • Software Testing
    • Show more
    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    20 Projects Listed
    View Profile
    4.8 4.8 (6)

  • Right Tail

    Product Teams On Demand

    Product Teams On Demand

    Right Tail provides a high-performance Product Software Development and IT Staff Augmentation team built for speed, precision, and outcomes. We partner with startups, scale-ups, and enterprise technology companies to design, build, and scale world-class digital products...

    Top Services:

    • Staff Augmentation
    • Software Development
    • Mobile App Development
    • AI Development
    • Blockchain
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
    View Profile
    4.8 4.8 (6)

  • Zignuts Technolab

    Leading AI-Powered Software Development Agency.

    Leading AI-Powered Software Development Agency.

    Zignuts Technolab is a top-rated Web and On-demand Mobile App development company in the USA, Germany, and India. We strive to excel in the invention and development of the industry’s most advanced technologies. We will help you to make your digital dreams in on your hand...

    Top Services:

    • Software Development
    • Web Design
    • Web Development
    • AI Development
    • Mobile App Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Portfolios Count
    1 Project Listed
    View Profile
    4.8 4.8 (5)
    4.4 4.4 (104)

  • Chop Dawg

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Meet The Partner Behind Your App's Success | Make It App'n!

    Meet The Partner Behind Your App's Success | Make It App'n!

    Meet your award-winning app development team, dedicated to turning your vision into scalable and profitable digital apps and software...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    52 Projects Listed
    View Profile
    4.9 4.9 (61)
    4.8 4.8 (76)

  • Talentica Software

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Building Products AI-Native Way

    Building Products AI-Native Way

    Talentica Software is a leading product engineering company that helps startups, growth-stage, and technology companies build end-to-end products and achieve business outcomes. The company has specialized in AI & Machine Learning, Generative AI, Data Engineering, Blockchain, and Big Data...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • Big Data Analytics
    • Blockchain
    • Show more
    Location
    Pleasanton, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
    View Profile
    4.9 4.9 (27)
    4.4 4.4 (244)

  • Rushkar Technology Pvt. Ltd.

    Software & Mobile Application Development Company.

    Software & Mobile Application Development Company.

    Rushkar Technology Pvt. Ltd. is a premier software development company based in India, renowned for its commitment to delivering high-quality, timely, and cost-effective offshore software and mobile application solutions. At Rushkar, we prioritize long-term relationships and client satisfaction, ensuring that...

    Top Services:

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • eCommerce Development
    • Web Development
    • Show more
    Location
    Anaheim, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $12/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
    View Profile
    4.9 4.9 (21)

  • Empat

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Full-cycle software development powerhouse

    Full-cycle software development powerhouse

    Since 2013, we've delivered 300+ digital products across 17 countries, empowering brands like Porsche, Panasonic, Transparency International, Heinemann, CBRE, and dozens of ambitious startups and scaleups...

    Top Services:

    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • AI Development
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    24 Projects Listed
    View Profile
    4.9 4.9 (20)
    5.0 5.0 (40)

  • TruAdvantage

    Award-Winning IT & Cybersecurity

    Award-Winning IT & Cybersecurity

    TruAdvantage is a Bay Area based, award-winning IT firm specializing in managed IT, managed Cybersecurity, cloud solutions and strategic IT . Our passion is to bring enterprise-level productivity, simplicity, scalability, and security to over 100 businesses that have chosen us as their IT partner...

    Top Services:

    • Managed Services
    • Cybersecurity
    • IT Services
    • Staff Augmentation
    • Business Consulting
    • Show more
    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $165/hr
    Portfolios Count
    8 Projects Listed
    View Profile
    4.9 4.9 (14)
    5.0 5.0 (219)

  • Tech Reforms

    Reforming Tomorrow's Tech

    Reforming Tomorrow's Tech

    Empowering California Businesses with Bespoke Web Design and Development Services...

    Top Services:

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Mobile App Development
    • Software Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    11 Projects Listed
    View Profile
    4.9 4.9 (12)

  • Goji Labs

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    An Award-Winning Agency That Builds It Right

    An Award-Winning Agency That Builds It Right

    We help our partners turn complex challenges into intuitive digital products through strategy, UX/UI design, and product development. We've successfully launched 500+ products and helped raise over $1B in funding and counting...

    Top Services:

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • AI Development
    • Web Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $149/hr
    Portfolios Count
    19 Projects Listed
    View Profile
    5.0 5.0 (91)
    4.9 4.9 (57)

  • Zazz

    Modern IT. Built Secure. Delivered Right.

    Modern IT. Built Secure. Delivered Right.

    Zazz is a trusted software engineering and IT services partner helping enterprises deliver secure, scalable, high-impact tech initiatives. We solve complex challengeslegacy bottlenecks, tech debt, talent gaps, compliance risks, and system fragmentation...

    Top Services:

    • Mobile App Development
    • IT Services
    • Software Development
    • Staff Augmentation
    • IT Compliance Solution
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $45/hr
    Portfolios Count
    36 Projects Listed
    View Profile
    5.0 5.0 (76)

  • AppMakers USA

    Top US Mobile & Web App Development Agency

    Top US Mobile & Web App Development Agency

    AppMakersUSA is a US-based full-service mobile application development company. We specialize in building cross-platform websites and apps (meaning iOS & Android for the price of one), informing your business decisions from a technical perspective, and being transparent in our process & thinking...

    Top Services:

    • Mobile App Development
    • UI/UX Design
    • AI Development
    • Software Development
    • Web Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    83 Projects Listed
    View Profile
    5.0 5.0 (67)
    4.9 4.9 (77)

  • BitsWits

    Where Exceptional Apps Are Just The Beginning

    Where Exceptional Apps Are Just The Beginning

    BitsWits is the top mobile app development company in the US, creating innovative mobile applications that help businesses across industries increase efficiency, engagement, and sales. Our top mobile app developers utilize cutting-edge technologies to build high-performing, intuitive mobile solutions that...

    Top Services:

    • Mobile App Development
    • Software Development
    • VR/AR
    • Blockchain
    • AI Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed
    View Profile
    5.0 5.0 (58)
    5.0 5.0 (11)

  • Cheesecake Labs

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Enterprise Software & AI Engineering - Silicon Valley Rigor, Nearshore Speed

    Enterprise Software & AI Engineering - Silicon Valley Rigor, Nearshore Speed

    Cheesecake Labs provides staff augmentation for mid-size enterprises and Fortune 500 companies that need senior engineering talent without the time and cost of full-time hiring. The talent roster spans frontend and backend development, mobile engineering, UX/UI design, DevOps, data engineering, AI, and ML...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • Staff Augmentation
    • Blockchain
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Portfolios Count
    13 Projects Listed
    View Profile
    5.0 5.0 (35)
    4.8 4.8 (83)

  • Diffco

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Your trusted AI software development partner

    Your trusted AI software development partner

    Diffco is a San Francisco AI-first software engineering partner for growth-oriented teams. We embed senior engineers and product strategists who turn AI vision into shipped, revenue-driving products. Our team has spent the last 18 years building: SaaS platforms, web & mobile apps, and AI products...

    Top Services:

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Web Development
    • Show more
    Location
    San Jose, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $110/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    31 Projects Listed
    View Profile
    5.0 5.0 (33)
    5.0 5.0 (24)

  • Junkies Coder

    Top-rated Mobile Apps, AI/ML, Blockchain Development Company.

    Top-rated Mobile Apps, AI/ML, Blockchain Development Company.

    Junkies Coder is a leading technology solution provider across 15 countries and 50+ Rockstar Developers is our strength, We're specializing in web development, Top-rated Mobile App Development, and innovative solutions. Our experienced team is dedicated to delivering high-quality service and support to help...

    Top Services:

    • Mobile App Development
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • Digital Services
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    15 Projects Listed
    View Profile
    5.0 5.0 (29)
    4.9 4.9 (22)

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