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.
Top IT Services Companies in California
Compare the leading IT services agencies in California, handpicked for their verified reviews, standout portfolios, and proven expertise, so you can confidently choose the right partner to scale your business.
| Agency Name | Why Hire Them | Client Rating | Hourly Rate | Top Client or Case Study | Top Industries |
| Goji Labs | Trusted by global brands for UX and digital products. | 5.0 ⭐ | $149 | Redesigned Elf on the Shelf website for immersive experience. | Nonprofit, Healthcare, Fintech |
| Closeloop Technologies | Award-winning, innovative tech solutions for complex needs. | 4.9 ⭐ | $25 | Resolved database outage for Brex in two hours. | Fintech, Healthcare, eCommerce |
| Mercury Development | Over 2,500 projects delivered for top global brands. | 4.9 ⭐ | $50 | Developed mobile apps for Burger King and Fitbit. | Wellness & Fitness, Healthcare, Retail |
| Suffescom Solutions Inc | Experts in mobile apps with global industry recognition. | 5.0 ⭐ | — | Built ridesharing app for GoCar Malaysia. | eCommerce, Healthcare, Fintech |
| AppMakers USA | MIT, Stanford, UCLA engineers deliver on time and budget. | 5.0 ⭐ | — | Developed mobile app for CVS Pharmacy. | Retail, Education, Sports |
| Azumo | Nearshore experts trusted by Meta, Zynga, United Health. | 4.9 ⭐ | $55 | Developed chatbot app for Facebook events. | AI, Fintech, Health Care |
| Koderspedia | Custom mobile and web solutions with rapid delivery. | 4.9 ⭐ | — | Web app for Gameloft Montreal exceeded expectations. | eCommerce, Gaming, Real Estate |
| Aristek Systems | AI and EdTech specialists with 22+ years experience. | 4.8 ⭐ | $50 | Award-winning LMS for K-12 education market. | Education, Health Care, Logistics |
| SDLC Corp | Full-cycle digital solutions for startups to enterprises. | 4.9 ⭐ | $50 | IoT supply chain project improved delivery for Freight Right. | Logistics, eCommerce, Gaming |
| Trango Tech | Holistic software and mobile solutions for global growth. | 4.7 ⭐ | — | Built wellness app for Simple Habit company. | Wellness & Fitness, eCommerce, Real Estate |
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.
Zazz is an IT services company offering managed services, cybersecurity, cloud, AI, and staff augmentation to enterprise clients. It has delivered projects for the Government of Ontario and Seattle Aquarium. Best for enterprises needing a full-stack IT partner across transformation and security...
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
SunTec.ai is a premium enterprise AI services and data annotation provider, offering AI training data, data labeling (text, image, video, audio, and 3D LiDAR data), and enterprise AI development services, backed by 25+ years' experience and 850+ experts...
Top Services:
- AI Development
- IT Services
- Location
- California City, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 1 Project Listed
iApp Technologies: Trusted digital product development partner helping brands turn ideas into powerful & scalable solutions. We specialize in designing and building high-performance Web and Mobile Apps (iOS + Android) that align with evolving market demands and deliver measurable business impact...
Top Services:
- Mobile App Development
- Blockchain
- AI Development
- Web Development
- UI/UX Design
- Show more
- Location
- San Ramon, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $20/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 60 Projects Listed
ThirdEye Data Transforms Enterprises with Data & AI Solutions & Services. ThirdEye Data leverages Artificial Intelligence & Data technologies to build AI applications for enterprises worldwide...
Top Services:
- AI Development
- Big Data Analytics
- Software Development
- IT Services
- Staff Augmentation
- Show more
- Location
- San Jose, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 23 Projects Listed
We specialize in building enterprise websites that surpass marketing objectives, with a focus on speed, personalization, multilingual capabilities, lead generation, and relationship nurturing. As experts in leading digital experience platforms, we optimize your marketing tech investments or recommend the best...
Top Services:
- Web Design
- Web Development
- WordPress Website Design
- IT Services
- Show more
- Location
- Palo Alto, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 25 Projects Listed
Internet Nerdz stands as a premier technology services and consulting firm, dedicated to crafting innovative solutions tailored to meet the intricate demands of your digital transformation journey. With a steadfast commitment to excellence, we specialize in developing cutting-edge strategies and solutions...
Top Services:
- IT Services
- Managed Services
- Cloud Consulting
- Cybersecurity
- IT Compliance Solution
- Show more
- Location
- Santa Monica, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
Many worldwide clients are now using "EpicBliss" benchmark solutions, We're capable to drive you to the right tech-track for your laudable idea. So, let's scrutinize your business need, mold it and establish it with the latest and most suitable technologies...
Top Services:
- IT Services
- Cloud Consulting
- Mobile App Development
- Software Development
- Software Testing
- Show more
- Location
- Ontario, California
- Number of Employees
- Under 49
With Accenture, you'll experience IT Services powered by our insight-driven tactics that deliver measurable success in digital transformation, cloud adoption, and cybersecurity. Backed by 500,000+ experts and the largest global tech network, we drive innovation and value across 40+ industries worldwide...
Top Services:
- Software Development
- Cybersecurity
- IT Services
- IoT
- Big Data Analytics
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 1000 & Up
- Portfolios Count
- 4 Projects Listed
We dont just develop applications; we build lasting partnerships that evolve software to keep our clients competitive and innovative. Since 2009, MobiDev has helped over 400 businesses in the US, Canada, Europe, and Israel build, modernize, and scale their products for todays dynamic market...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- Web Design
- VR/AR
- Show more
- Location
- Sacramento, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 14 Projects Listed
ALFTEK offers full-service network infrastructure, system administration, network security, software development and other managed IT services. What's more, the company also integrates robust software solutions with cloud-based SaaS, PaaS and IaaS platforms for website and social & blog design...
Top Services:
- Software Development
- Cybersecurity
- IT Services
- Managed Services
- Web Design
- Show more
- Location
- Concord, California
- Number of Employees
- Under 49
- Portfolios Count
- 4 Projects Listed
Planeteria Media is a Santa Rosa, Californiabased digital agency specializing in website design and development for municipalities, public agencies, and private enterprises. Since 1999, the agency has delivered over 500 websites, offering scalable, accessible, and user-friendly digital solutions. Planeteria...
Top Services:
- Web Design
- Social Media Marketing
- PPC
- Digital Marketing
- IT Services
- Show more
- Location
- Santa Rosa, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $130/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 6 Projects Listed
Forum InfoTech (FIT) is a Top 100 managed services provider founded in 2004 and based in Riverside/Corona, California. The firm specializes in managed and comanaged IT, cloud migration (AWS, Azure), cybersecurity, identity and access management, IT compliance, and virtual CIO services. With 1150 employees...
Top Services:
- Cybersecurity
- IT Services
- Managed Services
- Cloud Consulting
- Show more
- Location
- Corona, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
EY offers Accounting, Business Consulting, and IT Services with a mission to build a better working world. It provides insights and quality services that instill trust in global capital markets and economies. EY focuses on developing exceptional leaders who deliver on their commitments to all stakeholders...
Top Services:
- Business Consulting
- HR Outsourcing
- Accounting
- Cybersecurity
- IT Services
- Show more
- Location
- Sacramento, California
- Number of Employees
- 1000 & Up
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...
Top Services:
- Accounting
- HR Outsourcing
- Business Consulting
- Market Research
- BPO
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 1000 & Up
Product and Software Development, IT Consulting Services and Managed IT...
Top Services:
- Mobile App Development
- Software Development
- IT Services
- Cybersecurity
- Managed Services
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $90/hr
- Minimal Budget
- $1,000 - $10,000
We are one of the fastest-growing IT training and Information Technology Consulting and technology solutions providers in the US with an extensive footprint in North America and globally...
Top Services:
- HR Outsourcing
- Staff Augmentation
- IT Services
- Location
- San Francisco, California
- Number of Employees
- Under 49
For over 30 years, Quest has been a beacon in Government IT services. From cybersecurity to cloud management, we tailor our offerings to your unique needs, ensuring agility, productivity, and scalability in an evolving market...
Top Services:
- IT Services
- Cybersecurity
- Managed Services
- Mobile App Development
- Cloud Consulting
- Show more
- Location
- Roseville, California
- Number of Employees
- 100 - 249
- Portfolios Count
- 5 Projects Listed
Masters Development Network and Solutions (MSDN Solutions) is a Web Development and Marketing company providing Web and Software Services, Graphic Design and Printing Solutions, and all Marketing needs to enterprises and more specifically to startup companies across the world...
Top Services:
- IT Services
- Cybersecurity
- SEO
- Web Design
- WordPress Website Design
- Show more
- Location
- Thousand Oaks, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $65/hr
- Minimal Budget
- $1,000 - $10,000
Argusoft is a trusted software solutions design consultancy that provides end-to-end, enterprise-class turnkey solutions. Our team of Argonauts are trained to think design at every step, architecting, designing, and coding with the business goals and objectives of our clients in mind...
Top Services:
- Staff Augmentation
- Software Development
- IT Services
- Mobile App Development
- UI/UX Design
- Show more
- Location
- Newark, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $25,000 - $50,000
Akins IT is dedicated to empowering individuals through technology, making the complex simple. Based in Southern California, we specialize in tailoring IT Infrastructure and Security solutions for state, local and education organizations. As your trusted experts, we simplify technology and deliver results...
Top Services:
- IT Services
- Location
- Newport Beach, California
- Number of Employees
- Under 49
Focus on your business - not IT & Security. We take the headache away by building holistic IT & Security programs that enable your business goals, not block them. Let us worry about making this relationship work by increasing employee productivity and efficiency through strategic IT programs and management to...
Top Services:
- IT Services
- Location
- Los Angeles, California
- Number of Employees
- Under 49
Elevate the Atlassian experience with Contegix - a distinguished Platinum Solutions Partner in DevOps consulting. Over two decades, we've been trailblazing secure Atlassian solutions, catering to diverse teams in both private and public sectors...
Top Services:
- DevOps Consulting
- IT Services
- Location
- Los Angeles, California
- Number of Employees
- 250 - 499
Based in California, WATI is an esteemed technology and ECM consulting solutions provider with a robust footprint across the USA and India...
Top Services:
- ECM Consulting
- IT Services
- Cybersecurity
- Staff Augmentation
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Portfolios Count
- 3 Projects Listed
At HyScaler, we're driven by a mission to be your trusted partner in achieving transformative business objectives. Our global vision focuses on harnessing cutting-edge technologies to craft sustainable, intelligent, and secure solutions...
Top Services:
- Mobile App Development
- Blockchain
- Software Development
- AI Development
- IoT
- Show more
- Location
- Santa Clara, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 6 Projects Listed
Acuity Total Solutions offers comprehensive facility management services, from maintenance and landscaping to IT and cybersecurity...
Top Services:
- Cybersecurity
- IT Services
- IT Compliance Solution
- Cloud Consulting
- Managed Services
- Show more
- Location
- Oxnard, California
- Number of Employees
- 50 - 99
- Minimal Budget
- $25,000 - $50,000
At Final Key Consulting, we offer a range of services tailored to assist you in starting, enhancing, and growing your business. With competitive pricing, we ensure value-driven solutions that meet your needs without compromising quality...
Top Services:
- Logo Design
- Web Design
- eCommerce Development
- WordPress Website Design
- SEO
- Show more
- Location
- Pacifica, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Portfolios Count
- 1 Project Listed
ABSO Technologies delivers reliable, enterprise-grade Managed IT Services to businesses, municipalities, and nonprofits. Our fully in-house team provides proactive support, cybersecurity, and strategic IT solutions to keep your organization secure, efficient, and focused on growth...
Top Services:
- IT Services
- Managed Services
- Cloud Consulting
- Cybersecurity
- Staff Augmentation
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $90/hr
- Minimal Budget
- Under $1,000
IT Services Companies in California by City
Related Services in California
IT Services Specializations in California
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Frequently Asked Questions
What services do IT services companies in California provide?
IT services companies in California provide technology solutions that help businesses run efficiently, stay secure, and scale operations. Their services typically include:
- Managed IT support
- Cloud services
- Cybersecurity
- IT consulting
- Software development
- Infrastructure setup
- Help desk support
How do IT services companies in California help businesses improve efficiency and security?
IT services companies in California improve efficiency and security by automating routine tasks, maintaining cloud infrastructure, and ensuring fast, reliable access to business tools. For security, they set up firewalls, encryption, and multi-factor authentication to block unauthorized access.
They also monitor networks 24/7, detect vulnerabilities early, and provide regular updates and backups to prevent downtime or data loss. This allows businesses to operate smoothly and focus on growth while staying protected from cyber risks.
How much do IT services cost in California?
IT services in California typically cost $80 to $200 per user per month, depending on service scope and company size.
- Basic packages cover help desk support, monitoring, and maintenance
- Mid-range plans include security management, cloud services, and data backups
- Higher-end packages add advanced cybersecurity, compliance support, and strategic IT consulting
Project-based work, like migrations or infrastructure upgrades, is usually billed separately at hourly rates.
What certifications should California IT support companies have?
California IT support companies should hold certifications that prove their technical skill and security standards. Common and respected ones include:
- CompTIA A+ or Network+
- Microsoft Certified Solutions Expert (MCSE)
- Cisco Certified Network Associate (CCNA)
- AWS or Google Cloud certifications
- Certified Information Systems Security Professional (CISSP)
- ITIL Certification
How do IT services companies in California ensure data protection and compliance with state and federal laws?
IT services companies in California ensure data protection and compliance by combining strict security measures with legal standards. They use encryption, firewalls, and access controls to secure sensitive information, along with regular backups and disaster recovery systems.
To meet regulations like CCPA, HIPAA, and GDPR, they conduct compliance audits, maintain data processing policies, and train staff on privacy rules. They also monitor systems for breaches, keep detailed logs for accountability, and update protocols as laws or threats evolve, ensuring businesses stay secure and compliant.
What kind of ongoing support do California IT support companies offer after implementation?
California IT support companies provide ongoing services to keep systems secure, up to date, and running smoothly after implementation. Support usually includes 24/7 monitoring, help desk assistance, and regular maintenance to prevent downtime.
They handle software updates, security patches, and system backups, and monitor networks for performance or security issues. Many also offer user training, hardware upgrades, and scalability planning so businesses can adapt as they grow.
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