Need reliable staff augmentation services in California to expand your team? To help you find the right staffing solution, we identified the best service providers in the Golden State to include in our curated directory — each assessed based on client reviews and success stories. Refine your search by industry, budget, team size, and other parameters to connect with the perfect match.
Best California Staff Augmentation Company Rankings
133 Companies
Rankings updated: July 08, 2025
Goji Labs - Building It Right the First TimeWe're Goji Labs—your future team for building smart, beautiful apps that actually work. Strategy? Yep. UX? Obsessed. Code? Clean. We've launched hundreds of products, and were just getting started. [... view the full profile of Goji Labs]Los Angeles, California Under 49 $149/hr $25,000 - $50,000
Build Intelligent Apps for Web, Mobile, Data, AI and CloudAzumo helps businesses build intelligent apps by providing nearshore, top-tier developers skilled in AI, data engineering, and enterprise web and mobile applications. Our expertise has earned the [... view the full profile of Azumo]San Francisco, California 100 - 249 $55/hr $50,000 & Up
Quality, Experience, Transparency, ResultsMercury Development offers best in class Software Development, Mobile Apps, UI/UX, QA, ML, Data Science and more. With over 23 years in business, and over 400 employees, Mercury has the experience [... view the full profile of Mercury Development]San Diego, California 250 - 499 $50/hr Inquire
Transforming Ideas into Intelligent SolutionsAristek is a custom development company specializing in AI and DS solutions for EdTech, HealthTech, Logistics, and Retail. Our experts have 22+ years of experience, serving 40+ global clients and [... view the full profile of Aristek Systems]Irvine, California 100 - 249 $50/hr $25,000 - $50,000
Driving Change Through Technology - Apps, Ecommerce, Staff Aug, BPO, Next Gen Tech and more!We are the nerds that every company wants in their tech division; experience, innovative and imaginative to the core!With more than 200 innovative software products and solution delivered, Trango [... view the full profile of Trango Tech]San Jose, California 100 - 249 Inquire Inquire
Your trusted partner for software development and team augmentationDiffco is a global software development and team augmentation company based in Silicon Valley. With over 16 years of experience delivering robust software solutions in mobile, web, and AI development [... view the full profile of Diffco]San Jose, California 50 - 99 $70/hr $25,000 - $50,000
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Solving complex problems with design and technology since 2005.We craft digital products that streamline your processes, expand your customer base, and drive business growth. Strategically located within your reach, we'll take your ambitious project from an [... view the full profile of Infinum]Los Angeles, California 250 - 499 Inquire $50,000 & Up
Transform Fast: Your App on iOS & Android Awaits!Koderspedia | Mobile App Development in Palo Alto [... view the full profile of Koderspedia]Palo Alto, California Under 49 Inquire $1,000 - $10,000
E-commerce Experts | Web Development, Shopify/ Shopify PlusDigitalSuits is a full-cycle ecommerce agency with a focus on Shopify development and extensive expertise in custom software development. [... view the full profile of DigitalSuits]San Diego, California 50 - 99 $45/hr $10,000 - $25,000
FUELING DISRUPTIONWe're EffectiveSofta custom software development company delivering effective digital solutions. Whether it's new product creation or scaling and maintaining complex systems, we empower businesses to [... view the full profile of EffectiveSoft]San Diego, California 250 - 499 $50/hr $25,000 - $50,000
Software Outsourcing & Development | 500+ Active ClientsFounded 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. [... view the full profile of BairesDev]San Francisco, California 1000 & Up $50/hr $50,000 & Up
Your Vision. Our Expertise. Shaping the Future!TekRevol is a global leader in digital innovation, dedicated to creating advanced products ranging from mobile apps to AI-enhanced software solutions. Our goal is to help businesses outperform their [... view the full profile of TekRevol]San Francisco, California 250 - 499 $35/hr $25,000 - $50,000
Award-Winning IT & CybersecurityTruAdvantage 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 [... view the full profile of TruAdvantage]San Jose, California Under 49 $165/hr Inquire
Your Trusted Partner in Software Development, Product Design and QAinVerita is a 150 engineers custom software and staff augmentation company that delivers custom healthcare software, pharmacy and medical(IoT), web(.NET/Node.js), mobile solutions(React-Native), and [... view the full profile of InVerita]San Francisco, California 100 - 249 Inquire Inquire
Engineering peace of mindAt Vention, unparalleled customer care isnt just a promise its our mission. We blend personalized experience, unwavering attention to detail, and a genuine passion for your business, ensuring that [... view the full profile of Vention]San Francisco, California 1000 & Up $50/hr $25,000 - $50,000
A Reliable Full-Service Software Development, Cloud, DevOps and QA partnerLeveraging 30 years of excellence designing, developing, deploying and supporting world-class software solutions, Kanda Software has established itself as a trusted Software Development, Cloud [... view the full profile of Kanda Software]Alameda, California 500 - 999 $50/hr $50,000 & Up
Since 2002 in the software development business. Companies from 27 industries choose us.With over 20 years of industry experience, Gecko Dynamics is a trusted partner for startups and enterprises. Our team delivers end-to-end solutions using Java, Angular, Flutter, and AWS. From ideation [... view the full profile of Gecko Dynamics]San Francisco, California 50 - 99 $50/hr Inquire
We build innovative products for startups and larger brandsThere are a lot of choices when it comes building a software product. The reason people choose ScrumLaunch is because of our high touch approach, high quality work and most importantly, because we [... view the full profile of ScrumLaunch]Los Angeles, California Under 49 $100/hr Under $1,000
Where innovation meets app-solutely everything.TechAhead stands at the intersection of healthcare, Flutter, e-commerce, and finance mobile app innovation. Our healthcare apps bridge communication gaps, eCommerce apps provide powerful features, and [... view the full profile of TechAhead]Agoura Hills, California 100 - 249 $25/hr $25,000 - $50,000
SST is an IT company that delivers software solutions for the digital transformation of business.Custom Software DevelopmentWeb DevelopmentMobile App DevelopmentE-Commerce Development [... view the full profile of Smart Soft Team]Los Angeles, California 100 - 249 $30/hr $1,000 - $10,000
INSPIERD BY THOUGHTSDev Technosys is an ISO 9001:2008 certified web and mobile app development company. Dev Technosys started back in 2010, is a perfect fusion of talent, endeavoring over 950+ successful Mobile and Web [... view the full profile of Dev Technosys]Commerce, California 100 - 249 $20/hr Inquire
A CMMI5 Certified CompanySeasia, being a well-known world-class enterprise software development company, serves small, medium, and large-sized businesses in a seamless and secure manner. We enable competitive digital [... view the full profile of Seasia Infotech]Emeryville, California 500 - 999 $25/hr $1,000 - $10,000
Transforming Enterprises with AI ApplicationsThirdEye Data Transforms Enterprises with Data & AI Solutions & Services.ThirdEye Data leverages Artificial Intelligence & Data technologies to build AI applications for enterprises worldwide. [... view the full profile of ThirdEye Data]San Jose, California 50 - 99 $55/hr $10,000 - $25,000
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 [... view the full profile of Junkies Coder]San Francisco, California Under 49 $25/hr $10,000 - $25,000
Technology Partner for 170+ Startups.Offering Chatbot, IT, and Software Solutions. Talentica Software is an innovative outsourced product development company that provides startup-oriented and dedicated remote teams to help startups [... view the full profile of Talentica Software]Pleasanton, California 500 - 999 $30/hr $50,000 & Up
Nearshore Software Development ServicesNeed devs but in a hiring freeze? Continue to build and increase productivity with our nearshore software development resources. We provides highly skilled, team-based resources to companies that need [... view the full profile of Admios]San Francisco, California 50 - 99 $60/hr $25,000 - $50,000
Find Your Top Tech TalentOur IT recruiting agency, ITExpert, specializes in finding highly skilled IT specialists all over the world. This way, you can save time and focus on business development instead of searching for [... view the full profile of ITExpert Recruitment Agency]San Francisco, California 50 - 99 $40/hr $1,000 - $10,000
Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific SolutionsAltoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the [... view the full profile of Altoros Labs]Pleasanton, California 250 - 499 $50/hr $25,000 - $50,000
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 [... view the full profile of Rushkar Technology Pvt. Ltd.]Anaheim, California 100 - 249 $12/hr $1,000 - $10,000
We serve good projects and provide guaranteed quality and customer careAt our company, we believe in being flexible and adaptable to our clients needs. We understand that every business is unique, and we work closely with our clients to deliver tailored solutions that [... view the full profile of Tessafold]Santa Clara, California Under 49 $50/hr $10,000 - $25,000
Take part in a digital transformation with us!With a strong team of over 120 experts and developers spanning across 5 countries and headquartered in the vibrant city of New York, Jafton is a dynamic technology firm. [... view the full profile of Jafton]Los Angeles, California 100 - 249 Inquire $25,000 - $50,000
Let's Uncover the Next Big Cross-Platform App TogetherCMOLDS is a custom software and mobile app development company specializing in digital transformation consultancy and products including websites, Android and iOS apps, mobile games, B2B portals, and [... view the full profile of CMOLDS]San Francisco, California 250 - 499 $49/hr $10,000 - $25,000
Crafting AI-Driven Dreams Into RealityBleed AI is a specialist agency that designs end-to-end AI Sales systems to hunt, engage, and close your ideal B2B customerswhile eliminating manual busy-work. From intent-based prospecting and [... view the full profile of Bleed AI]Sacramento, California Under 49 $45/hr $10,000 - $25,000
A top-class Google app engine development company!Etelligens is an industry-leading custom software and Google app engine development company known for its reliable mobile and web development that delivers innovative solutions. [... view the full profile of Etelligens Technologies]Torrance, California 100 - 249 $25/hr $10,000 - $25,000
Your Vision. Delivered.Custom Software Development & IT Infrastructure Optimization [... view the full profile of Yellowstone Labs]Los Angeles, California Under 49 $30/hr $10,000 - $25,000
We Code Scalable Software.We are a leading custom software development company specializing in building scalable software. We work with SMEs and enterprises across the globe to transform their businesses and help them fill [... view the full profile of ScalaCode Global Pvt. Ltd.]San Jose, California 250 - 499 $15/hr $1,000 - $10,000
Our success - it's your business successRiseServ provides unique and custom software solutions as web-applications, mobile applications, web-portals for medium and small businesses in US, Canada and Europe. Se stand with US small businesses [... view the full profile of RiseServ]Newport Beach, California 50 - 99 $25/hr $1,000 - $10,000
Your mission critical web design, development, & maintenance partnerBanks, tech companies, and other serious firms choose WP Riders for the technical expertise and 24/7 maintenance & reliability theirs team and customers deserve at an SMB-friendly price point. [... view the full profile of WPRiders]Sacramento, California Under 49 $100/hr $10,000 - $25,000
Upsource Your Custom Software DevelopmentCodeStringers is an uncommon software development firm that brings innovation, craftsmanship, and integrity to the development of best-in-class cloud, web and mobile software products. We provide [... view the full profile of CodeStringers]Santa Cruz, California 50 - 99 $55/hr $50,000 & Up
Exceeding expectations.Accedia is a premier European IT services company, specializing in technology consulting and custom software development. Founded in 2012, the company has established itself as a trusted technology [... view the full profile of Accedia]Palo Alto, California 100 - 249 $55/hr $1,000 - $10,000
Top Mobile App and Web Development CompanyDeveloper Bazaar Technologies is a Top Ranked Mobile App & Custom Software Development Company, specializing in transforming ideas into stunning realities and Creating a Positive Impact and is [... view the full profile of Developer Bazaar Technologies]Fremont, California Under 49 $25/hr $1,000 - $10,000Need Help Selecting The Right Agency For Your Project?
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About The Author and Expert Reviewer
Zarah Ariola specializes in research and business. Working at IBM and serving at the UN Migration Agency provided her with first-hand information on business processes, HR, and finance subjects. She now uses these insights to produce valuable and actionable B2B content for DesignRush.
Sanja Srećković is an HR professional who utilizes her background in cultural anthropology to develop practical and successful HR methods for businesses. She served as a talent acquisition specialist at Petnica Science Center, then worked at SAT, an employment agency, where she successfully hired 100 people in just six months. She now employs her expertise in HR operations and management, talent assessment, and full-cycle IT recruitment to scale the teams and recognize top talent at DesignRush.
