Top IT Services Companies in California

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

We Have Researched the Best California IT Support Companies For You

6 Companies-Rankings updated: September 09, 2026

DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.

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United States × California × Real Estate × Under $1,000 ×Clear Filters

Quantum IT Innovation
Empowering Your Digital Future with Innovative IT Solutions
At 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 business forward in the USA, UK, Canada, Ireland, UAE, Australia, India, & across the globe...
Top Services:
Web Development
Social Media Marketing
SEO
PPC
IT Services
Show more
Location
San Clemente, California
Number of Employees
100 - 249
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Portfolios Count
101 Projects Listed
Quantum IT Innovation Services
Web Development
Social Media Marketing
SEO
PPC
IT Services
Mobile App Development
AI Development
Digital Marketing
Software Development
Web Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
David
Karmel
Jevon
Luke
Rajitha
Alfred
Gilbert
Erik
Christopher Samdeo
Mehernaz Emadi
Data sourced from the agency's DesignRush profile
Quantum IT Innovation Reviews & Testimonials
Lorena Iaut Obstetrician and Gynecologist at Lorena Laut
5.0★
Digital Marketing Review from Lorena Iaut
We have had a great experience working with Quantum IT Innovation for our digital marketing needs. Their team is professional, responsive, and truly understands how to position a healthcare brand effectively online. We've seen noticeable improvement in our digital presence and engagement. Highly recommend their services to anyone looking for reliable and result-driven marketing support.
Brigitte Brünjes Owner at Hogasearch
5.0★
Digital Marketing Review from Brigitte Brünjes
Quantum IT Innovation played a key role in strengthening HOGASEARCHs digital presence through strategic digital marketing and SEO services. Their team delivered creative content, consistent planning, and visible growth in engagement and search rankings. Highly professional and results-oriented.
SAM NAJIBI CEO at MBSS Security Services
5.0★
Digital Marketing Review from SAM NAJIBI
Quantum IT Innovation has been a game-changer for MBSS Security.Their digital marketing strategies helped us boost our local visibility, generate leads, and build a strong online presence. Highly professional and results-driven team truly appreciate their support!
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4.9 4.9 (9)
4.1 4.1 (113)
iapp Technologies LLP
Innovation Beyond Imagination
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
iapp Technologies LLP Services
Mobile App Development
Blockchain
AI Development
Web Development
UI/UX Design
Web Design
eCommerce Development
IT Services
WordPress Website Design
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
VPN Proxy Master
Poster App Lab
Pool Ride
ChiroRing App
Data sourced from the agency's DesignRush profile
iapp Technologies LLP Reviews & Testimonials
Shubhpreet Sidhu CEO at SASA Innovations
5.0★
Mobile App Development Review from Shubhpreet Sidhu
iapp Technologies provided an exceptional experience in developing the SASA Rides mobile app for both Android and iOS platforms. Their team demonstrated outstanding professionalism, clear communication, and a strong commitment to delivering high-quality results. Every stage of the app development was handled efficiently, with timely updates and meticulous attention to detail. They were responsive to feedback, proactive in offering innovative solutions, and genuinely dedicated to client satisfaction. The expertise and dedication they brought to the project made the entire process smooth and stress-free. I highly recommend iapp Technologies for reliable, skilled, and client-focused mobile app development.
Seth Horsley Founder at StateCert
5.0★
Web Design Review from Seth Horsley
I worked with them extensively and they have been very helpful and extremely responsive and have provided very high quality work. Definitely recommend!
Gursewak Singh Brar Director at Third Pole Immigration Services
5.0★
Web Development Review from Gursewak Singh Brar
iapp Technologies provided excellent service with timely delivery, clear communication, and high-quality results. Their team is professional, responsive, and truly dedicated to client satisfaction. Highly recommended!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.6 4.6 (3)
4.1 4.1 (98)
Palm Desert Geeks
Local It Support You Can Count On.
Our team of IT experts can assist you with a number of web development, computer, and network related issues. We do it all from website design and creation to virus removal, data backup and system diagnostics, as well as VPN setup and ongoing network support. We have operated in the Coachella Valley for...
Top Services:
Web Design
Web Development
Social Media Marketing
IT Services
PPC
Show more
Location
Palm Desert, California
Number of Employees
Under 49
Average Hourly Rate
$20/hr
Minimal Budget
Under $1,000
Palm Desert Geeks Services
Web Design
Web Development
Social Media Marketing
IT Services
PPC
Email Marketing
Content Marketing
Business Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Palm Desert Area Chamber of Commerce
Parc Center Suites
YMCA of the Desert
Archer Property Management
The Fire Place Palm Desert
Data sourced from the agency's DesignRush profile
Palm Desert Geeks Reviews & Testimonials
Jennifer Tomaselli Review from Google
1.0★
Jennifer Tomaselli's Review Sourced from Google
My experience with this company Palm Desert Geeks, has been extremely frustrating. Pat, the owner, is a very poor communicator—he rarely responds to texts, emails, or phone calls in a timely or consistent manner. As a paying customer on a monthly subscription plan, I expected a basic level of service and professionalism, which was not delivered.Their services for website development, social media, and content posting are subpar. It appears the person responsible for this work is only available for a few hours a week, and it shows in the quality and consistency of the output.When I raised concerns about the lack of results and asked about the value I was receiving for what I was paying, I was abruptly terminated via text message—without any real conversation or attempt at resolution. Pat seemed completely unwilling to accept feedback, taking it as a personal attack rather than an opportunity to improve.Overall, it was a terrible and disappointing experience. I strongly recommend looking elsewhere if you’re considering using this company.
Dan Eaglin Review from Google
5.0★
Dan Eaglin's Review Sourced from Google
Excellent place for computer repair/diagnosis. Have been there a couple times. They are knowledgeable and very reasonable.
Kimbra Lo Review from Google
5.0★
Kimbra Lo's Review Sourced from Google
Visiting family in the area and had an issue with my mac and it not recognizing my external hard drive. Went as a walk-in, the day before my flight and the female employee was so unbelievably kind and helpful. Fixed the problem on the spot, luckily wasn't too complicated. Could not recommend this place more, I have had other issues in the past and always bad experiences at the Apple in Palm Desert. Go to the Palm Desert Geeks they are the best, just be aware they are on the 2nd floor!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.8 4.8 (16)

Sariya IT
Elevate Your Digital Experience: Where Web Excellence Begins.
Sariya IT is an IT solutions and digital marketing agency dedicated to providing services such as web development, digital marketing, SEO, and IT solutions that seamlessly align with your unique business vision. With a strong focus on technology services, we empower your success...
Top Services:
Graphic Design
Web Development
Digital Marketing
SEO
Social Media Marketing
Show more
Location
Fullerton, California
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
Under $1,000
Sariya IT Services
Graphic Design
Web Development
Digital Marketing
SEO
Social Media Marketing
IT Services
Cybersecurity
Branding
Web Design
Email Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Neilson Marketing Services
Netreputation
InternetZonel
Addrian Productions
Data sourced from the agency's DesignRush profile
Sariya IT Reviews & Testimonials
ديه ديه Review from Google
5.0★
ديه ديه's Review Sourced from Google
I highly recommend Sariya IT for anyone seeking a top notch digital marketing company in Dhaka. Their expertise in SEO and digital marketing is commendable, and they've delivered excellent results for our website. Thanks Sariya IT professional team for best work. They are simply the best in the business.
Raqibul Mia Review from Google
5.0★
Raqibul Mia's Review Sourced from Google
One of the best digital marketing company in Bangladesh. They are truly providing world class service. I also love their awesome team
Abdullah Review from Google
5.0★
Abdullah's Review Sourced from Google
SariyaIT is an excellent Digital marketing agency that helps streamline many business operations. Their team of experts is highly skilled and knowledgeable, and they are able to provide customized solutions that cater to specific business needs. and I would highly recommend SariyaIT to anyone looking for reliable digital marketing agency.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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5.0 5.0 (5)
GoBro PH
We Create With Your Needs And Preferences In Mind.
GoBro Web Services is a California-based web design and digital solutions agency that helps businesses strengthen their online presence through professional website design, web and app development, branding, SEO, digital marketing, and technical support services. The agency focuses on delivering modern...
Top Services:
Digital Services
Graphic Design
Web Design
Digital Marketing
Email Marketing
Show more
Location
Lake Elsinore, California
Number of Employees
100 - 249
Average Hourly Rate
$12/hr
Minimal Budget
Under $1,000
GoBro PH Services
Digital Services
Graphic Design
Web Design
Digital Marketing
Email Marketing
Social Media Marketing
BPO
IT Services
Customer Support
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Dental Industry
Hardware & Networking Industry
Health Care Industry
Data sourced from the agency's DesignRush profile
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ByteBotix InfoTech LLP
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
ByteBotix InfoTech LLP Services
Software Development
Mobile App Development
Software Testing
Managed Services
UI/UX Design
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
SMS College
PTS Fitness
The Hirist
Marian Institute of Advanced Studies
Prime Homes
Data sourced from the agency's DesignRush profile
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IT Services Companies in California by City

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Why Companies Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, DesignRush Agency Directory is a reliable resource for finding IT services companies in California. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

Learn more about DesignRush Agency Ranking Methodology.

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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:

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.