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 NameWhy Hire ThemClient RatingHourly RateTop Client or Case StudyTop Industries
Goji Labs Trusted by global brands for UX and digital products.5.0 ⭐$149Redesigned Elf on the Shelf website for immersive experience.Nonprofit, Healthcare, Fintech
Closeloop Technologies Award-winning, innovative tech solutions for complex needs.4.9 ⭐$25Resolved database outage for Brex in two hours.Fintech, Healthcare, eCommerce
Mercury Development Over 2,500 projects delivered for top global brands.4.9 ⭐$50Developed 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 ⭐$55Developed 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 ⭐$50Award-winning LMS for K-12 education market.Education, Health Care, Logistics
SDLC Corp Full-cycle digital solutions for startups to enterprises.4.9 ⭐$50IoT 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.

United States × California × Consumer Goods × Under $1,000 ×Clear Filters
  • We help businesses in building Web, App, Software, and Adapting AI Solutions.

    Probey Services builds websites on WordPress and Shopify, iOS and Android apps, and web applications. The IT services firm has delivered 1,800+ projects across global markets. Best for small and mid-size businesses needing a cost-effective offshore development partner...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    94 Projects Listed
  • Marketing that Works Hard, So You Don't have To!

    John Limbocker, Founder of Internet Dominators, has been cracking Search Engine codes and getting top listings for his clients since the mid 90s. He is a sought after speaker making numerous worldwide guest appearances demystifying how the Search Engines really work and how to beat them. Most recently John...

    Top Services:

    • IT Services
    Location
    Huntington Beach, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    Under $1,000
  • The Forward Thinking IT Company

    24hourtek provides managed IT services for SMBs and nonprofits in the San Francisco Bay Area and Denver. We focus on reliable IT operations, cybersecurity, and long-term IT strategy for organizations that want fewer disruptions and clearer direction. Our team supports day-to-day technology needs while helping...

    Top Services:

    • IT Services
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
  • Your ultimate cloud service provider

    At the forefront of IT, CRM & CX solutions, SoftClouds, headquartered in San Diego, CA, emerges as a transformative force. As an esteemed Oracle Platinum Partner, we specialize in crafting ERP solutions, cloud, mobile, and digital solutions that elevate corporate profitability while seamlessly unraveling...

    Top Services:

    • Cloud Consulting
    • IT Services
    • ERP Consulting
    • Mobile App Development
    • Show more
    Location
    San Diego, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    5 Projects Listed
  • Managed IT for Aspiring Businesses

    Vertical Computers provides all aspects of IT services. From hosting to “help-desking”, we make IT simple, giving you peace of mind...

    Top Services:

    • IT Services
    • Managed Services
    Location
    Chino, California
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
  • Global Cloud-Based Treasury Management Software Solutions

    San Diego-based Kyriba is a leader in global cloud-based treasury management software solutions. With proven technology services for cash management applications, Kyriba provides treasury management, cybersecurity, risk management, working capital, and other critical services...

    Top Services:

    • Software Development
    • Cybersecurity
    • IT Services
    Location
    San Diego, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $682/hr
    Minimal Budget
    Under $1,000
  • Software Solutions Simplified

    As a software services firm, delivering excellence is our mission. We offer development services through specialized teams segmented through our various brands. ​Whether that is app or website development, WordPress, Open Source, Billing, or E-commerce; we​ deliver what we promise. We have simplified the...

    Top Services:

    • Mobile App Development
    • Software Development
    • eCommerce Development
    • IT Services
    • Show more
    Location
    Carlsbad, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
  • A Leading Technology Company

    We are an industry leading technology company in Orange County, CA specializing in managed IT services, cybersecurity & digital marketing for small and medium sized businesses. We ensure your systems are secure, running optimally and that you have help when needed...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Managed Services
    • Cybersecurity
    • Show more
    Location
    Orange County, California
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
  • Your Business Cataylst

    ByteBotix InfoTech LLP is the top service provider, We focus on Industrial and web intelligence, Web and Mobile Applications and IOT based products. Whether you are a small , medium or largescale company we have got covered you all. What makes us stand out is that we deliver secured, standard and cost...

    Top Services:

    • Software Development
    • Mobile App Development
    • Software Testing
    • Managed Services
    • UI/UX Design
    • Show more
    Location
    Vacaville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
129,437+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
9

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

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: 

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.