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

7 Companies-Rankings updated: September 10, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

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United States × California × Transportation & Logistics × $25,000 - $50,000 ×Clear Filters

Yalantis
Verified
Full-Cycle IoT and Software Development company
We deliver cutting-edge, scalable, and fully functional IoT hardware and software products and ecosystems that help clients achieve their specific objectives...
Top Services:
IoT
Software Development
Mobile App Development
AI Development
Big Data Analytics
Show more
Location
California City, California
Number of Employees
500 - 999
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
24 Projects Listed
Yalantis Services
IoT
Software Development
Mobile App Development
AI Development
Big Data Analytics
IT Services
Cybersecurity
Staff Augmentation
Cloud Consulting
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
RAKwireless
Toyota Tsusho
KPMG
Healthfully
Orbis Systems
Lifeworks
Scholz Databank
123 Sourcing
Truhoo
Data sourced from the agency's DesignRush profile
Yalantis Reviews & Testimonials
Sergei Lishchenko Director of Digital Experience and Innovation at Orbis System
5.0★
Fintech Review from Sergei Lishchenko
The exception team the client collaborated with brought in fresh ideas and innovative technologies previously unfamiliar to the client. For example, with Yalantis' guidance, the client's developers explore the Go language. The primary reason the client chose Yalantis is its strong organizational and project management skills. It's not just about the developers; Yalantis provides a comprehensive support framework, ensuring that a project manager is consistently present. (Verified via email)
Jason Jung Senior engineering manager at Zillow
5.0★
Software Development Review from Jason Jung
Yalantis functions as an integral scrum team, supporting the development teams of a real estate firm. It created renovation project management tools that encompass a web app, a mobile app, and a backend system. Thanks to Yalantis, the client expanded development capabilities and achieved key short-term goals. Its quick integration was pivotal in launching various projects. Beyond delivering top-notch work, Yalantis emphasizes a culture that prioritizes the customer's needs. (Verified via email)
Roy D Partner at RAKwireless
5.0★
Outsourcing Review from Roy D
An IoT manufacturer teamed up with Yalantis to craft an application, enabling users to manage their devices more efficiently. Utilizing Node.js and basing the architecture on Circulus, Yalantis delivered commendable outcomes. It is responsive to any development challenges, offering swift resolutions. The client appreciates Yalantis' proactive stance, impressive technical expertise, and practical solution suggestions. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.6 4.6 (3)
Simform
Your Product Engineering & Gen AI Partner
Simform is a premier digital engineering company specializing in Product Engineering, Cloud, Data, Agentic AI, and Enterprise Platform Innovation. We help enterprises and high-growth ISVs build digital experiences and scalable, enterprise-grade products what work at scale...
Top Services:
Software Development
Cloud Consulting
AI Development
Big Data Analytics
DevOps Consulting
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Location
Los Angeles, California
Number of Employees
1000 & Up
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Simform Services
Software Development
Cloud Consulting
AI Development
Big Data Analytics
DevOps Consulting
IoT
eCommerce Development
UI/UX Design
IT Services
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sony Music (EMI)
Pepsico
Zep Inc
Intralinks
Nxt-ID
FreeWire Inc
Accent Inc
Mission Rabies
DoggyBnB
Drizzle Labs
Data sourced from the agency's DesignRush profile
Simform Reviews & Testimonials
Andrew Muroff CEO at Strainprint Technologies Ltd.
5.0★
Software Development Review from Andrew Muroff
We worked with Simform for many years ongoing software development on our core product, the Strainprint mobile outcomes tracker for medical cannabis patients. We have only positive things to say about their work product and attention to detail. We highly recommend them and will work with them again.
Robel Yemane Head of Engineering at Privilee
5.0★
Software Development Review from Robel Yemane
I've been working with Simform for over six months now. The engagement began with bringing our subscription management platform in-house, and we've since expanded the partnership to other projects due to their broad skill set and consistent reliability. They've gone the extra mileeven over weekends and public holidaysto help us move faster when needed. Communication and project management have been excellent, with any issues swiftly addressed. It genuinely felt like Simform was invested in our success. Having worked with similar firms throughout my career, I can confidently say Simform stands out and comes highly recommended.
Russ Makhauri Front-End Engineer at Midas
5.0★
Software Development Review from Russ Makhauri
We worked with Simform to hire a front-end engineer for our SaaS platform. The process was well-organized, and their team was professional, responsive, and efficient. They quickly identified a candidate who met our technical requirements and ensured a smooth onboarding process.Simforms communication and project management were strong throughout the engagement. They were proactive in addressing feedback and remained flexible in adapting to our needs. While there is some room for improvement in developer vetting and quality assurance, their overall service was excellent.For companies looking to scale their development teams efficiently, Simform is a reliable partner. Their structured approach, responsiveness, and commitment to client satisfaction make them a great choice. We would recommend them without hesitation.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.9 4.9 (16)
4.8 4.8 (21)
Aristek Systems
AI is easy. Systems are hard. We build systems.
Aristek Systems empowers innovators in EdTech, HealthTech, Logistics, and Retail with transformative IT Services. With our extensive industry knowledge, achieving success in AI, data science, and enterprise software is second nature. Let’s build your next breakthrough...
Top Services:
Software Development
AI Development
Staff Augmentation
Cloud Consulting
Software Testing
Show more
Location
Irvine, California
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
20 Projects Listed
Aristek Systems Services
Software Development
AI Development
Staff Augmentation
Cloud Consulting
Software Testing
Big Data Analytics
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Software& IT Industry
Energy Industry
Education Industry
Entertainment Industry
Health Care Industry
Transportation & Logistics Industry
Data sourced from the agency's DesignRush profile
Aristek Systems Reviews & Testimonials
Undisclosed CEO at E-Commerce Development Company
5.0★
Web Development Review from Undisclosed
Aristek Systems developed, tested, and released a new website for an e-commerce development company. The team utilized Ruby on Rails, Elixir, Phoenix Framework, JavaScript, GraphQL, PostgreSQL, and AWS. Aristek Systems was able to deliver a fully functional software, much to the client's delight. The team was highly communicative, and internal stakeholders were particularly impressed with the vendor's professionalism and attention to detail.
Undisclosed Product Design Manager at Educational Digital Platform
5.0★
Web Design Review from Undisclosed
Aristek Systems has redesigned the UI/UX of an existing educational digital platform. The team has refreshed the interface and added new features to deliver a more comprehensive experience for users. The client is satisfied with Aristek Systems' work and performance. The team delivers within the specified timeframe and manages the project seamlessly. Moreover, they stand out for their availability, problem-solving capabilities, and amazing work culture; they're easy to work with.
Anonymous CTO at Business Consulting Company
5.0★
Software Development Review from Anonymous
I had the privilege of working with Ruslan and his team at Aristek for the past three years. It is hard to find that level of dedication in an offshore vendor/partner but Ruslan and the Aristek team deliver it. I would highly recommend Ruslan and Aristek to anyone needing an expert level partner in EdTech and SaaS platform development.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.8 4.8 (6)

Consagous Technologies
Consagous Technologies is a global IT solutions provider specializing in end-to-end web and mobile application development. Since 2008, the agency has delivered over 700 projects for more than 689 clients worldwide, offering services such as mobile app development, custom software, UI/UX design, web...
Top Services:
Mobile App Development
Web Development
IT Services
Software Development
Show more
Location
Los Angeles, California
Number of Employees
50 - 99
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
17 Projects Listed
Consagous Technologies Services
Mobile App Development
Web Development
IT Services
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Gupa
Otboo
Purposs
Hi Cabs
Dr Citas
Qliniqo
Hitch Hiker
ProDaddy
CheapEatz
POE
Data sourced from the agency's DesignRush profile
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$Infracore$
Infracore
Providing best-in-class IT services
Infracore is a best-in-class Cybersecurity and IT Support Services firm. Founded in 2003, Infracore takes a white-glove approach to providing end-to-end IT infrastructure support, cybersecurity, systems management, network design, compliance, desktop support, and strategic decision guidance...
Top Services:
Managed Services
IT Services
Cloud Consulting
Cybersecurity
IT Compliance Solution
Show more
Location
San Diego, California
Number of Employees
50 - 99
Average Hourly Rate
$140/hr
Minimal Budget
$25,000 - $50,000
Infracore Services
Managed Services
IT Services
Cloud Consulting
Cybersecurity
IT Compliance Solution
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Pfizer
SmartDrive
Takeda
Tavistock Group
Verimatrix
Data sourced from the agency's DesignRush profile
Infracore Reviews & Testimonials
Bennett Fisher Service Desk, Cybersecurity at Fresh Echo Interactive
5.0★
Managed Services Review from Bennett Fisher
Fantastic IT support. Very responsive - they act as our internal team! Extremely pleased.
Best Life Review from Google
5.0★
Best Life's Review Sourced from Google
I recently had the pleasure of working with Infracore. Their customer service is exceptional. Their team is responsive, attentive, and genuinely committed to resolving my issues. They took the time to understand my specific needs and provided good, better, best options, which allowed me to feel in control by picking the path that best fit my needs and budget. Their friendly and professional approach made the entire experience seamless and stress-free.When it comes to technical expertise, Infracore truly stands out. Their knowledge of cloud services and cybersecurity is top-notch. They helped us migrate to a secure cloud environment with minimal downtime and ensured our data was protected with the latest security measures. Their proactive approach to identifying and mitigating potential threats has given us peace of mind, knowing our systems are in capable hands. I highly recommend Infracore for anyone seeking reliable and expert IT support services.
Louis Song Review from Google
5.0★
Louis Song's Review Sourced from Google
Paymon, Eric, Ivan and the team are great to work with. They are extremely responsive and knowledgeable and quickly helped us with some cybersecurity issues and an overall audit of our systems. They are my GO TO team for cybersecurity and any IT issues.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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4.3 4.3 (1)
5.0 5.0 (15)
Kritikal Solution
Translating Ideas & Research to Market
KritiKal Solutions is a technology design house and holds 22+ years of experience in AI, Computer Vision, Software Applications, Cloud and Mobile-based Solutions, Embedded Systems, Generative AI and Large Language Models. We specialize in R&D, product engineering, and innovation services...
Top Services:
AI Development
Software Development
Mobile App Development
IoT
IT Services
Show more
Location
Los Angeles, California
Number of Employees
100 - 249
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
4 Projects Listed
Kritikal Solution Services
AI Development
Software Development
Mobile App Development
IoT
IT Services
Wearables
HR Outsourcing
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Vector USA
BYJU'S
P&G
Columbus
Continental
Honeywell
ITC
Stryker
G&D
University of Berkeley
Data sourced from the agency's DesignRush profile
Kritikal Solution Reviews & Testimonials
Aakriti Bhatnagar Review from Google
5.0★
Aakriti Bhatnagar's Review Sourced from Google
Great place to work.Very good learning opportunity.Best place for freshers to learn and gain knowledge.Supportive and understanding colleagues.
Jobin John Review from Google
5.0★
Jobin John's Review Sourced from Google
One of the best aspects of working at KritiKal Solutions is the opportunity to collaborate with talented professionals across multiple domains. The company promotes a culture of innovation, knowledge sharing, and continuous improvement.
twinkle kumari Review from Google
5.0★
twinkle kumari's Review Sourced from Google
A great workplace that encourages continuous learning, teamwork, and professional growth. The management maintains an open-door policy, making it easy to share ideas and collaborate across all levels of the organization.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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5.0 5.0 (2)

Lanex Corporation
Lanex Corporation - Tailor-made solutions for your business needs
Here at Lanex Corporation, we are a full-cycle software development service provider specializing in bespoke digital solutions for startups and companies globally. We build scalable and secure products designed to impact your brand and provide the best digital experience for your users...
Top Services:
Mobile App Development
Software Development
IT Services
Web Development
Staff Augmentation
Show more
Location
San Francisco, California
Number of Employees
100 - 249
Average Hourly Rate
$49/hr
Minimal Budget
$25,000 - $50,000
Lanex Corporation Services
Mobile App Development
Software Development
IT Services
Web Development
Staff Augmentation
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Ecca
Hris
GE Reports
Data sourced from the agency's DesignRush profile
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IT Services Companies in California by City

Related Services in California

IT Services Specializations in California

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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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The agencies listed get notified of their profiles on the website and they can choose to claim it or not, which suggests their availability for more collaborations.

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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.