Top 100 Java Development Companies in California
The Best of October 2026Looking 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 an AI company based in San Francisco, California; Buenos Aires, Argentina; Sao Paulo, Brazil and Ciudad de México, Mexico. Launched in 2009, the large team specializes in Artificial Intelligence, IT staff augmentation, Custom Software Development, DevOps Managed Services, and more.Read More
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.
Clients
Toptal clients include J.P. MorganIndustries
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3$25,000+250 - 999 employeesSan Diego, CAEffectiveSoft is an AI Agents company. Established in 2003, the midsize agency is located in San Diego, California; San José, Costa Rica; Warszawa, Poland and San Francisco, California. Their services include AI Agents, Custom Software Development, AI Consulting, Artificial Intelligence, and more.Read More
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4$5,000+50 - 249 employeesDublin, CAPravaah Consulting Inc is a Dublin, California-based AI development company. The midsize team specializes in Artificial Intelligence, Custom Software Development, Mobile App Development, E-Commerce Development, and more. The firm was launched in 2019.Read More
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5$10,000+50 - 249 employeesLos Angeles, CAAppMakers USA is a mobile application development company. Based in Los Angeles, California; New York, New York; San Diego, California and Santa Monica, California, their midsize team offers Mobile App Development, Custom Software Development, Artificial Intelligence, UX/UI Design, and more. The firm was launched in 2014.Read More
Clients
Los Angeles Apparel Walmart Number Hive NFLIndustries
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6$25,000+50 - 249 employeesSan Jose, CADiffco AI, a custom software development company, is in San Jose, California. The midsize team provides Custom Software Development, Artificial Intelligence, Mobile App Development, AI Agents, and more and was established in 2008.Read More
Clients
Mars Chemtreat Nokia InstreamaticIndustries
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7$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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8$10,000+10 - 49 employeesEncinitas, CACollective42, a small web design agency, is located in Encinitas, California. Established in 2017, the team provides Web Design, Web Development, Search Engine Optimization, and Pay Per Click.Read More
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9$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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10$10,000+50 - 249 employeesSan Francisco, CAAzumo, a midsize AI company, is located in San Francisco, California and Rosario, Argentina. Established in 2016, the team offers Artificial Intelligence, Custom Software Development, AI Agents, AI Consulting, and more.Read More
Clients
Twitter Facebook Omnicom Discovery ChannelIndustries
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11$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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12$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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13$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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14$75,000+10 - 49 employeesManhattan Beach, CAWebsite development company Isadora Agency is based in Manhattan Beach, California and New York, New York. The small team offers Web Development, Pay Per Click, Web Design, Product Design, and more. The agency was established in 2009.Read More
Clients
GartnerIndustries
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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.
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Burger KingIndustries
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16$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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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.
Clients
Life scienceIndustries
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18$10,000+10 - 49 employeesIrvine, CAKingsmen Digital Ventures, a custom software development company, is in Irvine, California. Established in 2017, the small team offers Custom Software Development, Mobile App Development, UX/UI Design, Web Development, and more.Read More
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19$50,000+50 - 249 employeesCulver City, CAUtility, a mobile app development company, is based in New York, New York; Culver City, California and Austin, Texas. Launched in 2013, the midsize team focuses on Mobile App Development, Web Design, UX/UI Design, Custom Software Development, and more.Read More
Clients
Airbnb NBA Coca-Cola ForbesIndustries
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20$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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Hewlett-Packard -
21$25,000+50 - 249 employeesLos Angeles, CAAI development company Dreamers Inc. Was established in 2013. Their midsize team is in Los Angeles, California. Dreamers Inc. Offers Artificial Intelligence, Blockchain, Mobile App Development, Custom Software Development, and more.Read More
Clients
NASA Johns Hopkins Applied Physics Lab US Air Force US Department of EducationIndustries
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22$25,000+10 - 49 employeesSanta Monica, CARead 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.
Clients
CiscoIndustries
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23$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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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.
Clients
NetAppIndustries
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26$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.
Clients
Campaign MonitorIndustries
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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.
Clients
NaturaIndustries
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28$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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29$5,000+250 - 999 employeesPalo Alto, CALITSLINK is an AI company in Palo Alto, California and Orlando, Florida. The midsize agency was launched in 2014. Their services include Artificial Intelligence, Mobile App Development, UX/UI Design, Web Development, and more.Read More
Clients
Mush LimitedIndustries
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30$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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