Find top IT service companies in California through DesignRush. Our platform connects you with California IT support companies trusted by brands like McDonald's and Coca-Cola. With over 1M monthly visitors and Fortune 500 companies using our rankings, you can be confident in the quality of every agency listed. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.
Best California IT Support Company Rankings
512 Companies
Rankings updated: July 12, 2025
We are a Creative Development Agency & Consultancy.We don't just build apps, we build app companies. Our CA-based team of entrepreneurs, innovators, and visionaries partner with new Founders and business owners to design, develop, & launch apps that [... view the full profile of Naked Development]Irvine, California Under 49 Inquire $10,000 - $25,000
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
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
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
Get what matters!Suffescom is a leading mobile app development company offering top-notch solutions across diverse industries. [... view the full profile of Suffescom Solutions Inc]Los Angeles, California 250 - 499 Inquire $10,000 - $25,000
Bringing awesome ideas to lifeCloseloop is a renowned custom software development company in California, offering innovative software solutions to its clientele to meet modern digital trends. We specialize in custom software [... view the full profile of Closeloop Technologies]Mountain View, California 100 - 249 $25/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
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
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
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World Famous IT Services for BusinessesAccenture is a renowned worldwide IT services company that excels in digital, cloud, and security solutions. With an extensive range of expertise across over 40 industries, we provide a comprehensive [... view the full profile of Accenture]Los Angeles, California 1000 & Up Inquire Inquire
A trusted name in IT!As a leading provider of IT services, we offer a comprehensive range of services and expertise to address diverse business needs. Our team of professionals specializes in delivering innovative IT [... view the full profile of CCI Tech]Gilroy, California Under 49 Inquire Inquire
Where Government IT Meets Simplified CybersecurityTechMD, at the vanguard of Government IT, offers a fusion of managed cybersecurity and IT solutions. Backed by SSAE-19 certification, we cater to SMBs, driving tech simplicity and fostering growth. [... view the full profile of TechMD]Santa Ana, California 50 - 99 Inquire Inquire
Secure Your Digital Assets.CyberDuo empowers organizations through secure digital transformation. We drive productivity, foster innovation and build resilient IT environments with cutting-edge solutions. Trust us to protect [... view the full profile of CyberDuo]San Francisco, California Under 49 $50/hr Inquire
Decades of Experience, Building Platforms for the Worlds Top Brands - USA & CanadaEssential Designs builds custom software platforms for the worlds leading brands, and companies of all sizes. Our technologies include Mobile Applications, Web Based Applications and Desktop. [... view the full profile of Essential Designs]Culver City, California 50 - 99 $50/hr $25,000 - $50,000
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
Your Product Engineering & Gen AI PartnerSimform is a premier product engineering services company specializing in Cloud/MACH architectures, DevOps automation, Data Engineering, Generative AI and Machine Learning to create seamless digital [... view the full profile of Simform]Los Angeles, California 1000 & Up $30/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
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
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
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
Revel in the media presence we create for you!Welcome to Bytes Technolab a New-Age Digital Transformation and Product Engineering Company that keeps AI & ML innovations at the heart of everything. [... view the full profile of Bytes Technolab Inc.]Pleasanton, California 100 - 249 $20/hr $1,000 - $10,000
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
Well-rounded perspectives to achieve effective marketing outcomes.Kobe Digital is a unified team of performance marketing, design, and video production experts. Our mastery of these disciplines is what makes us effective. Our ability to integrate them seamlessly is [... view the full profile of Kobe Digital]Los Angeles, California Under 49 $150/hr $1,000 - $10,000
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
At Rootstrap we combine creativity, technical expertise, and process-driven developmentAt Rootstrap, we help companies scale people, processes, and products through outcome-driven development.We’ve helped launch more than 750+ digital products with more than 100 million combined [... view the full profile of Rootstrap]Los Angeles, California 50 - 99 $87/hr Inquire
AI-Enabled Сustom Software DevelopmentWe're JetRuby — AI-native, award-winning, and ISO-certified agency that's been shipping software since 2010. Our 250+ engineers turn bold ideas into production-ready products, starting from budgets [... view the full profile of JetRuby]San Francisco, California 250 - 499 $45/hr $50,000 & Up
Deep tech expertise for SMELight IT provides the following services on the global tech market:- consulting clients on IT products and services- custom product and software development- provision of resources at the [... view the full profile of Light IT]San Jose, California 100 - 249 $40/hr $10,000 - $25,000
We create digital products and grow with our partners!Rocketech is a software development company collaborating with 100+ Middle and Senior level IT and business professionals and specialising in analytics-driven web and mobile development. Our team has [... view the full profile of Rocketech Development]San Francisco, California 50 - 99 $30/hr $1,000 - $10,000
Empowering Your Digital Future with Innovative IT SolutionsAt Quantum IT Innovation, our team excels in AI, Big Data, RPA, and Mobile App Development for iOS, Android, and Cross-Platform. We also offer expert SEO, PPC, and Social Media services to drive your [... view the full profile of Quantum IT Innovation]San Clemente, California 100 - 249 $10/hr Under $1,000
Dedicated teams that build complex software systemsSiliconMint designs, develops, and supports mission-critical software systems. Based in San Francisco, SiliconMint has offices in New York and Europe to serve clients across the globe. [... view the full profile of SiliconMint]San Francisco, California 50 - 99 $55/hr $25,000 - $50,000
Leading SDaaS & Blockchain Development CorporationA global Software Development as a Service (SDaaS) & IT Consulting group who delivers sustainable Blockchain Development, Software Development, including Web/App/Game Development, AI & Machine [... view the full profile of SOTATEK JSC]Costa Mesa, California 500 - 999 $25/hr $1,000 - $10,000
Your E-Commerce, Our Expertise: Magento & Shopify SolutionsYour Shopify & Magento Development Experts. Site speed, conversion rate optimization, platform evaluations, platform migrations, theme development, ERP integration development, custom application [... view the full profile of Bighorn Web Solutions LLC]Los Angeles, California Under 49 $135/hr $25,000 - $50,000
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
Connect with the best in healthcare IT!DreamSoft4U stands as a top-tier Flutter developer and healthcare software expert since 2003. Serving everyone from hospitals to individual physicians, our tech solutions prioritize hassle-free [... view the full profile of Dreamsoft4u]Corona, California 50 - 99 $40/hr $1,000 - $10,000
Build. Accelarate. Scale.GeekyAnts is an avant-garde design and development studio, distinguished for creating transformative solutions across web and mobile platforms. We specialize in social network app development too. [... view the full profile of GeekyAnts]San Francisco, California 250 - 499 $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
Software, mobile and SaaS application development since 2004.We are located in beautiful Phoenix, Arizona, and we can meet you in person anywhere in Arizona or Southern California. We have clients coast to coast and we have a long and proud history as a [... view the full profile of Data Titan]Los Angeles, California Under 49 $100/hr $1,000 - $10,000
Charter & Private School MarketingKreative Webworks is an award-winning school marketing agency that has been assisting Charter schools, Private schools and Higher Ed meet their enrollment goals since 2011. From strategy to [... view the full profile of Kreative Webworks]San Clemente, California Under 49 $150/hr $1,000 - $10,000
Our Award-Winning IT Services Help Organizations Win with Technology.Our mission is to unleash the potential of growth-oriented businesses through collaborative partnerships, exceptional service, and comprehensive managed IT solutions. To accomplish that, we use The [... view the full profile of Exigent Technologies LLC]Los Angeles, California Under 49 Inquire $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
Digital Consulting That Drives Business InnovationRobosoft Technologies is an experience engineering company trusted by large global enterprises, ambitious startups, and mid-size companies worldwide. Our mission is to simplify every aspect of digital [... view the full profile of Robosoft Technologies]San Francisco, California 500 - 999 $50/hr $25,000 - $50,000
Award-Winning Full Service Digital Marketing Agency Helping Bold Businesses Soar Above CompetitorsCreating powerful and profitable change requires the right digital and social media marketing partner! Our success and our clients’ success rely on an ecosystem of creativity, analytical strategies [... view the full profile of Mad Icarus]Victorville, California Under 49 $130/hr $1,000 - $10,000Need Help Selecting The Right Agency For Your Project?
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About The Author and Expert Reviewer
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her diverse background in marketing, publishing, and museum curation has enhanced her writing and research abilities. This unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio Oliveira is a seasoned software engineer and tech leader with deep expertise in C#, .NET, SQL, Azure, and scalable systems architecture. Holding a BSc in Computer Science and Finance, he pairs technical precision with strategic vision, shaped by years of hands-on professional experience in organizations across Europe and the US. At DesignRush, he oversees the full development lifecycle, from roadmap planning and features prioritization to UX refinement and platform optimization. His work ensures that technical execution aligns seamlessly with the company's goals, growth, and continuous innovation.
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