Top Software Development Companies in California
Finding the right software development company in California can define the success of your digital product. TopDevelopers.co offers a dependable platform to connect with highly ranked and trusted software development companies that deliver measurable results. All listed agencies undergo a strict evaluation process covering technical capability, industry knowledge, project quality, client feedback, and overall performance. Only California-based software companies that meet our quality standards earn a place on the platform. This ensures that businesses gain access to credible partners who can handle complex development needs with confidence. Whether the goal is a startup solution or an enterprise level system, the platform helps match requirements with proven expertise. Make an informed choice with verified data and build lasting partnerships that support business growth through innovative software solutions. If you’re looking to work with individual developers instead of an agency or company, hire software developers through Toptal’s network of vetted talent.
List of Best California Custom Software Development Companies | Top Software Developers in California
493 Companies | Last Updated 12 December, 2025
Software Development Outsourcing Company
Luvina Software JSC is recognized as a top 10 IT Outsourcing Services company in Vietnam specializing in Software Development. Founded in July 2004, Luvina has been growing rapidly and now has more than…Explore the detailed profile of Luvina Software JSC
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251 to 1000
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$26 - $50
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$5001 - $10000
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California, USA
Want to grow your business? Apply our Tech
We effectively translate your business requirements into functioning software, have a strong sense of design to support conceptual development, and proven ability to solve problems and communicate effectively.…Explore the detailed profile of eQuestever
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11 to 50
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Up to $25
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Less than - $5000
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California, USA
Where Taiwan's ICT Excellence Meets Global Business Success
We are seasoned software development veterans who deliver enterprise-grade solutions at competitive rates. With 10+ years of proven expertise across 30 industries and 250+ successful projects, we bridge…Explore the detailed profile of 4i Tech
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11 to 50
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$51 - $100
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$25001 - $50000
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California, USA
Custom Fantasy Sports Deveopment
Halkwinds specializes in delivering real time business solution for your custom software development needs. Halkwinds creates world's best social networks, fantasy sports, iGaming and betting solutions.…Explore the detailed profile of Halkwinds
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2 to 10
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Up to $25
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Less than - $5000
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California, USA
Perfect Resource for your Business
We are a leading staff augmentation and offshore software development company based in the USA, specializing in providing skilled talent for diverse projects. Our expert developers seamlessly integrate…Explore the detailed profile of Progressarc
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11 to 50
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$26 - $50
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Less than - $5000
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California, USA
Elevate Your Digital Presence, Ignite Your Success!
We are a team of passionate and experienced professionals who are dedicated to helping businesses succeed in the digital world. Our goal is to help our clients achieve their online marketing objectives…Explore the detailed profile of 24 Twelve Digital Marketing
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2 to 10
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Up to $25
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Less than - $5000
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California, USA
We rise by lifting others...
Founded in 2005 by seasoned technology professionals, Aximsoft features a strong and organically grown team of highly skilled Full-Stack engineers and professionals. This unique team brings…Explore the detailed profile of Aximsoft
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51 to 250
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$26 - $50
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Less than - $5000
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California, USA
AI software development company
We are a world-class AI company with core competency in machine learning and computer vision. We provide full-stack solutions to our customers. Our team of dedicated Algorithm Experts, Data Scientists,…Explore the detailed profile of Cognitiva
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11 to 50
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$51 - $100
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Less than - $5000
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California, USA
Deliver your Ideas To Reality
Coding Crafts is a custom software development agency based in San Francisco (est. 2019) specializing in mobile apps, PWAs, AI, cloud, SaaS, blockchain, and no-code solutions. Over a decade, we've…Explore the detailed profile of Coding Crafts
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11 to 50
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$51 - $100
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Less than - $5000
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California, USA
Your Growth Is our Success
Technology is trending, but Perfection Geeks rather discuss your company objectives and how our strategies can assist you to achieve them. If you think all technology service providers are the same, let…Explore the detailed profile of PerfectionGeeks Technologies
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11 to 50
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Up to $25
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Less than - $5000
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California, USA
Web Development Company
A web development company focused on building custom web app development for older companies. With a focus on long-term complex projects and practical solutions, we have full responsibility for the technical…Explore the detailed profile of Web Development Company
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51 to 250
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$101 - $150
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$5001 - $10000
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California, USA
Custom Software and Mobile App Development Company
Developing disruptive goods from innovative ideas using digital-first solutions Boxinall is a market leader in the development of digital goods ranging from mobile apps to AI-powered software that enable…Explore the detailed profile of Boxinall Softech
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11 to 50
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Up to $25
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Less than - $5000
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California, USA
Top Web Designers
Top web designers is based on IT web designers where creativity meets the height of high software development technology that reflects the progress of our customers. We are a team of enthusiastic, intelligent…Explore the detailed profile of Top Web Designers
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51 to 250
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$51 - $100
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$5001 - $10000
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California, USA
Your Software Development Team As-a-Service
We are a software development studio specializing in building and supporting bespoke web, mobile, and AI applications using modern methods, tools, and workflows. We act like an owner and work closely…Explore the detailed profile of Materialize LLC
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11 to 50
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$101 - $150
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$50001 - $100000
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California, USA
Decoding Innovation in AI/ML, Blockchain, DevOps, Data
MoogleLabs is a leading AI/ML development company specializing in cutting-edge technologies like Artificial Intelligence, Machine Learning, Blockchain, DevOps, Data Science, and emerging solutions such…Explore the detailed profile of MoogleLabs
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51 to 250
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$26 - $50
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Less than - $5000
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California, USA
Group of Tech Brains
We are an IT company which provides services in various domains like Logistics, Health, Ecommerce, etc. We have an expert level knowledge in web development and mobile development with proficient knowledge…Explore the detailed profile of IcommuneTech
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11 to 50
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$51 - $100
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Less than - $5000
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California, USA
Scalable Software and IT Talent Solutions.
Global IQ Services is a full-spectrum software development company delivering innovative, secure, and scalable digital solutions. From idea to execution, we build intelligent products that power business…Explore the detailed profile of Global IQ Services
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11 to 50
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$26 - $50
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$10001 - $25000
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California, USA
Innovative Web Solutions for Your Business Growth
Dino Code LA specializes in custom website development, tailored to your business needs. We offer cutting-edge technology solutions, user-friendly interfaces, and seamless integrations to help your business…Explore the detailed profile of Dino Code LA
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2 to 10
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$26 - $50
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Less than - $5000
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California, USA
Web development company - Web App, Mobile app, Static
Web development, Web App, Mobile App From database architecture and web application development to system integration and cloud traffic optimization, our development company has the solid expertise…Explore the detailed profile of NodeDevelop
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11 to 50
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$51 - $100
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$5001 - $10000
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California, USA
Trusted Digital Marketing & Technology
We believe that lead generation is crucial point for any business nowadays: either IT, technology or classic, ol-school offline manufacturing. Our goal is to provide both emerging and established businesses…Explore the detailed profile of Qualified.One
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2 to 10
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$151 - $200
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$10001 - $25000
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California, USA
Web & Mobile Development, UX/UI design, building R&D,
Lenal is a part of a group of companies Iternal. ITernal Group is a reliable IT vendor for complex software solutions. ITernal was originated in 2019 as a merger of three IT outsource…Explore the detailed profile of Lenal
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51 to 250
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$26 - $50
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$10001 - $25000
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California, USA
IT And Software Development Services
TechnoProfiles Pvt. Ltd. is your trusted digital partner, committed to supporting businesses of all sizes, from startups to established enterprises. Our skilled team stays current with evolving technology…Explore the detailed profile of TechnoProfiles
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51 to 250
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Up to $25
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Less than - $5000
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California, USA
Custom Web Online
Custom Web Online is a full-source digital design, development, and marketing agency that provides clients with the tools and expertise to unlock maximum performance, recognition, and profitability. Explore the detailed profile of Custom Web Online
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51 to 250
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$101 - $150
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$5001 - $10000
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California, USA
Tecniobyte Digital Marketing Agency
Tecniobyte is a digital marketing agency that offers a wide range Digital Marketing Services including, PPC, SEO, Social Media Marketing, Amazon FBA/Virtual Assistant. Tecniobyte is not your typical social…Explore the detailed profile of Tecniobyte
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11 to 50
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$101 - $150
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Less than - $5000
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California, USA
Hire Flutter Developer
Hire Flutter Developer is a Flutter Development Company and Mobile app developers. Hire Flutter Developer is a team of highly efficient and experienced IT professionals who provide services to app development…Explore the detailed profile of Hire Flutter Developer
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51 to 250
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$51 - $100
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$10001 - $25000
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California, USA
Empowering Startups: Unleash Your Potential With Our Innovative
As an industry-leading IT development company, we specialize in Product Innovation, Product Development, and IT Consulting. Startups love usbecause of our Agile & Innovative approach, specialized…Explore the detailed profile of MOBIZEAL Apps
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11 to 50
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Up to $25
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$5001 - $10000
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California, USA
SEAMLESS MOBILE APP DEVELOPMENT
Appverse Inc is a global guru in mobile application design and development. We create comprehensive applications and games for entrepreneurs, startups, and enterprises across various platforms, such as…Explore the detailed profile of App Verse INC
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51 to 250
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$26 - $50
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$10001 - $25000
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California, USA
Complete Web & Promotion Services
We offer complete web and promotion services at affordable rates. We provide responsive web design and development, mobile app, e-commerce, search engine optimization, web hosting, and Digital Marketing…Explore the detailed profile of ToCyber Technologies
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11 to 50
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Up to $25
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Less than - $5000
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California, USA
AI, Blockchain, IT and Software Consulting Group
HyScaler, a premier CMMI Level 5 technology consulting group, excels in AI, Blockchain, Information Technology, and Cloud Computing domains. With a successful history of collaborating with elite clients…Explore the detailed profile of HyScaler
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51 to 250
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$26 - $50
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$5001 - $10000
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California, USA
Custom Software Development
Rollout IT is a digital product development company as well as an exclusive developers' network. We partner up with companies to build something amazing from scratch, to help you with your product…Explore the detailed profile of Rollout IT
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11 to 50
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$26 - $50
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$5001 - $10000
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California, USA
Ai Video Analytics
Our cutting-edge AI Video analytics Software Solution in computer vision is intended to give companies immediate analysis and insights into their visual data. Explore the detailed profile of Inteliviu
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51 to 250
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$26 - $50
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$5001 - $10000
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California, USA
Custom Software Development Company
AppShah is a proven & reliable digital product development company fueled by individuals who have been breathing & living technology for over 4 years. We are passionate about our mission to create…Explore the detailed profile of Appshah
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11 to 50
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$26 - $50
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$5001 - $10000
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California, USA
Empowering Ideas, Transforming Realities
Welcome to Artisan10x, We're all about creating tailored software solutions and crafting fantastic web and mobile apps that grab attention and inspire. No matter who you are – whether you're…Explore the detailed profile of Artisan10x
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11 to 50
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Up to $25
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Less than - $5000
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California, USA
Data Entry Services India
Data-Entry-India.com, a division of SunTec India, is a leading data and eCommerce support service provider catering to a global clientele. As a trusted business process outsourcing company, we enable…Explore the detailed profile of Data-Entry-India.com
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251 to 1000
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Up to $25
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Less than - $5000
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California, USA
Top Digital Agency in USA
With an unwavering commitment to excellence, we have cemented our position as the go-to agency for innovative and groundbreaking solutions. At IDG, we possess a definite belief in the power of brand elevation…Explore the detailed profile of Infinite Digital Group
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11 to 50
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$51 - $100
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Less than - $5000
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California, USA
Frequently Asked Questions
Silicon Valley is at the heart of California, and Los Angeles and San Francisco are significant IT hubs in California. It signifies California is home to tech-driven start-ups, and many established businesses are operating in California. Apple, Google, Cisco, and Intel are the leading tech businesses with branches in California with thousands of employees.
With top universities residing in California, software development companies in California have access to top talent well-versed in the latest technologies and trends. All of the situations enable California development companies to deliver quality software solutions.
Californian software developers are experts in the things they do. That’s the one benefit you get. Besides, if you have a software product to develop for healthcare, the agency in California, the U.S., you get the relevant experts (who have worked and developed healthcare solutions). Besides, you get a range of other benefits, such as faster time to market (the development company applies simultaneous development, which helps launch products and services faster, reduced distraction, access to the latest technologies, and more.
You can expect comprehensive software development services from any company you choose on this platform. Software development companies in California offer a range of services, ranging from custom software development to software deployment and everything in between. Whether you are looking for web development services, mobile application development (Native and cross-platform), software solution development, product development, desktop application development, IoT, AR/VR, or AI solutions, Cloud computing a reliable agency can serve all your needs.
Hiring developers in California, the United States, will cost you $30 to $99 or more, depending on the type of software development agency you want to partner with and the expertise and experience level of the developer. For example, $30 to $49 for junior developers, $50 to $75 for mid-senior developers, and $75 to $199+ for expert developers. The cost of hiring software developers will also differ based on the type of engagement model you choose.
Most companies follow Time & Material (T&M), Sprint-Based Payment, Fixed Pricing, Fixed Budget, Fixed Deadline, and Flexible Scope (FFF) pricing models. However, the choice of payment model will ensure the payment structure. For example, in most cases, Agile development is suitable for software development. Hence, the company suggests T&M models. It is beneficial for both, and therefore, you may have to pay 25% initially, 50% when the project is half completed, and the rest of the project is developed, tested, and ready to deploy.
The best method to choose the right software development company in California is to look for their “Portfolios,” “Work methodology,” and “Client reviews.” Evaluate these three things, and you will find the right firm. Apart from this, you can also look at their team strength, tech expertise, and industry experiences. More than that, you must know your needs before approaching any firm for your projects. For example, understanding your projects and needs will help you make a better choice.
California-based software development companies use agile, waterfall, kanban, scrum, and waterfall methodologies depending on what suits software projects and what business clients demand.
Even though software agencies promise to use a comprehensive suite of technologies and tools for software development, most companies have their specific choice (because of the kind of client demand and easy availability of the technology in the region). As far as California software agencies are concerned, they use various tools and technologies, including Nifty, Git, Jira, Atom, Microsoft Azure, Visual Studio Code, Bitbucket, NetBeans, Amazon Web Services, and others.
Californian software development companies focus on several industries, ranging from Hospitality and tourism, Information technology, Fashion and lifestyle, Healthcare / Pharma / Medical, FinTech / Banking / Finance, and Logistics and Transportation to Food & Beverages, Media & Streaming, Real estate (RealTech) and others.
We have created this list of software development companies in California by thoroughly analyzing and evaluating each company. We have explored tech expertise, industry experiences, portfolio ranges, testimonials / client reviews, ratings, and more to ensure that only deserving companies get listed on this platform. Hence, the company that met our listing criteria is ranked and listed here. You can explore the software development agency and begin with project discussion as the rest we have done for you.