Top 100 Java Development Companies in California
The Best of June 2025Looking for a top Java developer in California?
Getting started with the Java programming language can be difficult, especially when you go at it alone.
To assist you in your search for a partner, we’ve compiled this list of the top Java development companies in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Java Developers
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1$50,000+1,000 - 9,999 employeesSan Francisco, CABairesDev is a software development company. They focus on Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more and were established in 2009. Their large team is San Francisco, California-based.Read More
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GoogleIndustries
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2$50,000+1,000 - 9,999 employeesSan Francisco, CARead More
Toptal is a private network of freelance technologists and designers. With more than 2000 freelance workers in its exclusive community, Toptal can be instrumental in finding the right freelance partner for development projects. The community includes developers for any platform, finance experts, and designers of both visual material and graphic interfaces. Because of its screening process, Toptal combines the reliability and expertise of an agency with the flexibility and affordability of freelance work.
Clients
Toptal clients include J.P. MorganIndustries
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3$25,000+50 - 249 employeesSan Jose, CARead More
Diffco is a company of world-class senior developers in Mobile, Web, and AI to launch, accelerate, and support your business applications. 13+ years of experience and 1000+ successfully launched projects. We succor our customers to become market leaders.
Clients
Mars Chemtreat Nokia InstreamaticIndustries
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4$10,000+250 - 999 employeesSan Francisco, CAAzumo, a custom software development firm, is located in San Francisco, California and Rosario, Argentina. The agency provides Custom Software Development, Mobile App Development, IT staff augmentation, Web Development, and more and has a midsize team.The agency was launched in 2016.Read More
Clients
Twitter Facebook Omnicom Discovery ChannelIndustries
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5$5,000+10 - 49 employeesDublin, CAPravaah Consulting Inc is a Dublin, California-based artificial intelligence development company. The small company was launched in 2019. Their team offers Artificial Intelligence, Custom Software Development, Mobile App Development, and E-Commerce Development.Read More
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6$25,000+10 - 49 employeesLos Angeles, CALaunched in 2010, LLT Group is a web design agency. The small Naperville, Illinois-based team specializes in Web Design, Web Development, E-Commerce Development, and Search Engine Optimization.Read More
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7$25,000+50 - 249 employeesLos Angeles, CAUser experience design agency ISBX Corp was launched in 2009. They are located in Los Angeles, California and have a midsize team. ISBX Corp focuses on UX/UI Design, Custom Software Development, Web Development, Mobile App Development, and more.Read More
Clients
Science37 BrainCorp Red Bull - Multiple Projects Apple/BeatsIndustries
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8$25,000+10 - 49 employeesPalo Alto, CARead More
Exemplifi is a development agency in Palo Alto, Calif. Founded in 2018, they have about 6 employees that serve clients in a variety of sectors. Their services are specialized in web development.
Clients
FOSSIndustries
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9$50,000+2 - 9 employeesEl Segundo, CARead More
Expedition Co, is a software development company that was founded in 2017. The company is headquartered in Palos Verdes Estates, Calif. and is currently made up of 8 employees. They specialize in mobile app development, UX/UI design, and custom software development.
Clients
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10$5,000+10 - 49 employeesIrvine, CARead More
CreateApe is a digital creative agency based in Irvine, Calif. Founded in 2014, the team of 2 specializes in UX/UI design, conversion optimization, web development and more.
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11$25,000+50 - 249 employeesSan Francisco, CARead More
Grio is a software consulting firm based in San Francisco, Calif, that was established in 2008. Their team of 50 employees offers web development, mobile app development, and UX/UI design services.
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12$10,000+50 - 249 employeesSan Mateo, CAImaga is a San Mateo, California-based software development firm. The midsize agency was established in 2018. Their team specializes in Custom Software Development, Web Development, Mobile App Development, E-Commerce Development, and more.Read More
Clients
MarsIndustries
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13$10,000+10 - 49 employeesSan Francisco, CARead More
Galliot is a San Francisco-based software development firm founded in 2018. With an additional office in Montevideo, Uruguay, their 10-man-team develops products for midmarket and enterprise-level clients. While custom software and DevOps are their specialties, they also offer web development and cloud consulting.
Clients
Life scienceIndustries
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14$1,000+10 - 49 employeesLincoln, CARead More
User experience design agency Sweetcode Lab was established in 2017. The small Nampa, Idaho-based team provides ux/ui design, web design, and logo.
Clients
NaturaIndustries
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15$25,000+10 - 49 employeesPasadena, CARead More
CT Software Solutions is a full-service Los Angeles based Web and Mobile App solutions provider. They provide software solutions to businesses that are looking for a less costly alternative to bigger, more expensive consulting firms.
Clients
Burger KingIndustries
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16$1,000+50 - 249 employeesSanta Rosa, CAWebsite development company ZUZEX was established in 2008. Their midsize team is in Santa Rosa, California and focuses on Web Development, Custom Software Development, Mobile App Development, and Low/No Code Development.Read More
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17$25,000+10 - 49 employeesLos Angeles, CAFrenchy Digital LLC is a small mobile application development company. In Los Angeles, California; Los Angeles, California; Hydra, Algeria and Publier, France, the company was launched in 2019. Their services include Mobile App Development, Web Development, and Artificial Intelligence.Read More
Clients
iGlow Med SpaIndustries
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18$50,000+50 - 249 employeesSan Diego, CARead More
WebcentrIQ is a software development company in San Diego. Founded in 2017, they have about 10 employees that serve mostly midmarket and small-business clients in the healthcare, financial, and IT industries. Services include custom software development, mobile app development, and UI/UX design.
Clients
Campaign MonitorIndustries
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19$10,000+10 - 49 employeesSanta Monica, CARead More
Fullsend Solutions Inc. Is a web development company. They offer web development, mobile app development, and ux/ui design and were established in 2019. Their small team is headquartered in Santa Monica, California.
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20$10,000+50 - 249 employeesLos Angeles, CARead More
DevTeam.Space is a development agency that was founded in 2015 and is based in Los Angeles. Their team of 8 specialize in web development and mobile app development for small businesses; these clients primarily reside in the advertising, business services, and consumer product industries.
Clients
AirbusIndustries
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21$10,000+10 - 49 employeesLos Angeles, CAMobile application development firm AppMakers USA was established in 2014. The small Los Angeles, California-based team provides Mobile App Development, Web Development, and UX/UI Design.Read More
Clients
Los Angeles Apparel Walmart Number Hive NFLIndustries
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22$50,000+10 - 49 employeesIrvine, CATopflight Apps is a mobile app development firm. They are in Irvine, California and have a small team that offers Mobile App Development, UX/UI Design, Web Development, Wearable App Development, and more. The agency was launched in 2016.Read More
Clients
Allheartz: computer vision for remote physiotherapy and sports care (SaaS platform + mobile apps) LnQ: On-Demand Enterprise Radiology Staffing GaleAI: AI-powered medical notes coding Walker Tracker: Award-Winning Fitness App for Employee WellbeingIndustries
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23$50,000+10 - 49 employeesSan Francisco, CARead More
Dayspring Technologies is a custom software and web development firm founded in 1997. They have just under 30 employees based in their San Francisco office. Much of their work focuses on custom software development for in-house platforms, but they also build client-side web apps, user interfaces, and e-commerce platforms.
Clients
American Red CrossIndustries
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24$5,000+50 - 249 employeesAltadena, CAEbizON Digital, an e-commerce development company, was established in 2007. The midsize team focuses on E-Commerce Development, Custom Software Development, Web Development, and Mobile App Development. The firm is in Altadena, California and Noida, India.Read More
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25$75,000+10 - 49 employeesManhattan Beach, CARead More
Isadora Agency is a California-based digital agency founded in 2009. Their team works with enterprise clients on their UX design systems, design, development, and branding needs.
Clients
GartnerIndustries
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26$25,000+50 - 249 employeesOrinda, CARead More
Based out of Orinda, CA with satellite offices in India and Croatia, Daxima is a software development company. The team of more than 50 employees has been in business since 2003. They provide web, software, and mobile app development for clients around the world.
Clients
T-Mobile USIndustries
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27$50,000+250 - 999 employeesPalo Alto, CARead More
Turing is a small IT staff augmentation company. Established in 2018, the agency is in Palo Alto, California. Their services include IT staff augmentation.
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28$10,000+10 - 49 employeesBonita, CAEatcaviar, a web design agency, is headquartered in Bonita, California. The small team specializes in web design, ux/ui design, branding, web development, and more. The agency was established in 2018.Read More
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29$5,000+10 - 49 employeesLos Angeles, CAVermillion Tech is a social media marketing agency and website development company. Their small team is headquartered in Surat, India. The firm specializes in social media marketing and web development. The firm was established in 2023.Read More
Clients
V&V JeweldiamIndustries
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30$25,000+10 - 49 employeesFremont, CARead More
Founded in 2011, EIGHT25MOBILE is a web design firm based in Fremont, Calif. With a small team of fewer than 5 employees, EIGHT25MOBILE specializes in web design, web development, and digital strategy.The client appreciated EIGHT25MOBILE's flexibility and ability to deliver a customized website.
Clients
Chamba
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