Top 100 Java Development Companies in California
The Best of December 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, CARead More
BairesDev is a San Francisco, California-based software development company. The large team offers Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more. The company was founded in 2009.
Clients
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.
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Toptal clients include J.P. MorganIndustries
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3$25,000+50 - 249 employeesSan Jose, CADiffco, a custom software development firm, is based in San Jose, California. They focus on Custom Software Development, Artificial Intelligence, IT staff augmentation, Web Development, and more and were launched in 2008.Read More
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Mars Chemtreat Nokia InstreamaticIndustries
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4$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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5$5,000+10 - 49 employeesDublin, CARead More
Pravaah 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.
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6$10,000+50 - 249 employeesSan Francisco, CAAzumo, a software development company, was launched in 2016. They are located in San Francisco, California and Rosario, Argentina and have a midsize team. Azumo offers Custom Software Development, Artificial Intelligence, Mobile App Development, BI & big data consulting & SI, and more.Read More
Clients
Twitter Facebook Omnicom Discovery ChannelIndustries
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7$50,000+10 - 49 employeesIrvine, CARead More
Topflight 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.
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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8$5,000+50 - 249 employeesAltadena, CAEbizON Digital is an e-commerce development firm based in Altadena, California and Noida, India. The midsize firm was launched in 2007. Their services include E-Commerce Development, Custom Software Development, Mobile App Development, and Web Development.Read More
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9$5,000+10 - 49 employeesEncinitas, CARead More
Headquartered in Encinitas, California, Collective42 is a web design company. The small company was launched in 2017. Their team provides Web Design, Web Development, Search Engine Optimization, and Pay Per Click.
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10$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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11$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.
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FOSSIndustries
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12$10,000+50 - 249 employeesSan Mateo, CAImaga ~ When UX & AI Both Matter is a San Mateo, California-based software development firm. Launched in 2018, the midsize team offers Custom Software Development, Web Development, Mobile App Development, E-Commerce Development, and more.Read More
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Mercedes-Benz DSC Information Technology is a UAE-based IT hardware supplier. Its catalog features 5,700+ SKUs available to customers worldwide Astana Motors is a leading Kazakh automotive company that distributes, manufactures, and sells vehicles. It was established in 1992, is part of the Astana Group holding, and serves as the official distributor for many major car brands like BMW and Toyota XDS-Astana Team. As of Oct 2025, XDS-Astana Team is ranked 4th in the Union Cycliste Internationale WorldTour. The team includes 46 racers from Italy, France, Denmark, and other countriesIndustries
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13$75,000+10 - 49 employeesManhattan Beach, CARead More
Isadora Agency, a website development firm, is headquartered in Manhattan Beach, California and New York, New York. The small team specializes in Web Development, Pay Per Click, Web Design, Product Design, and more. The firm was launched in 2009.
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GartnerIndustries
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14$10,000+10 - 49 employeesLos Angeles, CAAppMakers USA is a mobile application development company. Their small team is headquartered in Los Angeles, California and New York, New York. Their services include Mobile App Development, Artificial Intelligence, Web Development, and UX/UI Design. The company was established in 2014.Read More
Clients
Los Angeles Apparel Walmart Number Hive NFLIndustries
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15$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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16$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.
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Burger KingIndustries
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17$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.
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Life scienceIndustries
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18$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.
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19$50,000+50 - 249 employeesCulver City, CAUtility is an application development company headquartered in New York, New York; Culver City, California and Austin, Texas. The agency offers Mobile App Development, Web Design, UX/UI Design, Custom Software Development, and more and has a midsize team.The agency was launched in 2013.Read More
Clients
Airbnb NBA Coca-Cola ForbesIndustries
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20$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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21$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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22$25,000+10 - 49 employeesNew York, NYRead More
Venture Aviator is a software development company headquartered in New York, NY with other offices in San Francisco and Santa Monica, CA. The team of nearly 20 employees is fluent in blockchain, software, mobile app, and web development.
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CiscoIndustries
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23$10,000+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.
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Campaign MonitorIndustries
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24$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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25$25,000+50 - 249 employeesPalo Alto, CARead More
Data Monsters is a big data analytics company headquartered in San Francisco, California and , Russia. Established in 2015, the midsize team focuses on BI & big data consulting & SI, custom software development, and Artificial Intelligence.
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NetAppIndustries
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26$25,000+10 - 49 employeesLos Angeles, CAFrenchy Digital LLC is a small mobile application development company. They specialize in Mobile App Development, Web Development, and Artificial Intelligence and were founded in 2019. The agency is based in Los Angeles, California; Los Angeles, California; Hydra, Algeria and Publier, France.Read More
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iGlow Med SpaIndustries
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27$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.
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NaturaIndustries
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28$25,000+50 - 249 employeesLos Angeles, CADreamers Inc. Is an artificial intelligence development company in Los Angeles, California. Launched in 2013, the midsize team focuses on Artificial Intelligence, Mobile App Development, Blockchain, Cybersecurity, and more.Read More
Clients
NASA Johns Hopkins Applied Physics Lab US Air Force US Department of EducationIndustries
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29$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.
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AirbusIndustries
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30$100,000+10 - 49 employeesSan Francisco, CARead More
This California-based software company has strong expertise in web and mobile app development. The team of less than 50 has worked in various industries, from fitness to healthcare – they’ve done it all.
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GoogleIndustries
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