Best California Java Developers

12 Companies - Rankings updated: September 03, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

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United States × California × Java Development × Social Networks × Sort by: Avg Hourly Price: Low to High × Clear Filters

  • Seasia Infotech

    Enterprise AI Solutions | Scalable . Flexible. Sustainable

    Seasia Infotech is a global AI-powered digital engineering company with 25+ years of experience delivering custom software, AI solutions, cloud applications, mobile apps, and enterprise platforms. We help businesses accelerate innovation, improve efficiency, and drive digital transformation...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Big Data Analytics
    • Show more
    Location
    Emeryville, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    54 Projects Listed

    Seasia Infotech Services

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Big Data Analytics
    • Cloud Consulting
    • Staff Augmentation
    • Cybersecurity
    • IoT
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Adani Group
    • Flipkart
    • Harley-Davidson
    • Microsoft
    • MainStreet Equity Corp
    • HDFC Bank
    • Swaraj
    • Innopharma Education
    • Renault
    • Puda
    Data sourced from the agency's DesignRush profile

    Seasia Infotech Reviews & Testimonials

    • cornelia verden
      cornelia verden Web Developer at Cornelia Verden LLC
      5.0 ★

      eCommerce Development Review from cornelia verden

      This Company is AMAZING, they are very professional. We hired them to build my website, and they did an EXCELLENT job. They continuously communicated with me during the development phase. If you want a beautiful, well-designed, professional website that has optimum functionabilty, You must go with Seasia Infotech. You can always expect excellent quality services from the professionals at Seasia Infotech.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (1)

  • AlphaSquad Technologies

    We Elevate Brands From Good to Great.

    At AlphaSquad Technologies, we transcend mere development to craft transformative digital experiences. With unmatched proficiency in Web Development and Mobile Application Development, we pave the way toward an innovative, digitally evolved landscape. Our specialization lies in pioneering Website Design...

    Top Services:

    • Mobile App Development
    • Digital Services
    • Product Design
    • Web Design
    • UI/UX Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000

    AlphaSquad Technologies Services

    • Mobile App Development
    • Digital Services
    • Product Design
    • Web Design
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • Software Development
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • SigmaGo Solutions
    • Calonic
    • JoinMil
    • Sunkara
    • Edufeel
    Data sourced from the agency's DesignRush profile
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  • Rocketech Development

    We create digital products and grow with our partners!

    Rocketech is a software development company collaborating with 100+ Middle and Senior level IT and business professionals and specialising in analytics-driven web and mobile development. Our team has released 150+ products for 100+ startups and enterprises...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    • Blockchain
    • UI/UX Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    14 Projects Listed

    Rocketech Development Services

    • Mobile App Development
    • Web Development
    • Software Development
    • Blockchain
    • UI/UX Design
    • Digital Services
    • Managed Services
    • Business Consulting
    • Market Research
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Walmart
    • Unilever
    • Vodafone
    • Saudi Aramco
    • IQ Option
    • HAYS
    • McKensey & Company
    • DBS
    • Aleta Planet
    • Halyk Bank
    Data sourced from the agency's DesignRush profile

    Rocketech Development Reviews & Testimonials

    • Andrey Bezsonov
      Andrey Bezsonov Lead at Absolute Live Gaming
      5.0 ★

      Web Development Review from Andrey Bezsonov

      We tasked Rocketech with building a roulette system that could live-stream game results directly from an offline casino. There were 3 iterations of the project. The solution has mobile and web versions, supports more than 30 integrations, and provides different monetization channels. Overall, we saved 9 times the budget, while getting high-quality services. The platform handles more than 20K players worldwide and 2 million bets a year. Weve been successful on the market for more than 5 years.

    • Victoria Oros
      Victoria Oros CEO at Zuzan Global Soultions
      5.0 ★

      Software Development Review from Victoria Oros

      ROCKETECH helped us set up the development of our scheduling service. Professional developers, great support, good communication and synchronization with the core team. What was it about the company that you didn't like, what should they do better? Duration of recruiting process, good developers is hard to find good if you can make it faster in few days Coaching of Product owner more deeply

    • Ainar Abdrakhmanov
      Ainar Abdrakhmanov CEO & Founder at Babystep TV
      5.0 ★

      Design Services Review from Ainar Abdrakhmanov

      Babystep is a Learning Management Platform (LMS) for parents who want to implement innovative teaching methods into their kids' learning curve. The platform connects parents to learning experts and provides accessible consults all over the world. The website combines the functionality of a social media and marketplace, serving as a ground for communication, blogging, and service exchange.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (6)
    5.0 5.0 (1)

  • Empat

    Verified Verified by the DesignRush team for authenticity and credibility.

    Full-cycle software development powerhouse

    Since 2013, we've delivered 300+ digital products across 17 countries, empowering brands like Porsche, Panasonic, Transparency International, Heinemann, CBRE, and dozens of ambitious startups and scaleups...

    Top Services:

    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • AI Development
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    24 Projects Listed

    Empat Services

    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • AI Development
    • Web Development
    • IoT
    • Managed Services
    • VR/AR
    • CRM Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Porsche
    • Heinemann Duty-Free
    • Panasonic
    • Obimy
    • CBRE
    • Restream
    • FuelFinance
    • Transparency International
    Data sourced from the agency's DesignRush profile

    Empat Reviews & Testimonials

    • Angie Tromley-Morales, PMP
      Angie Tromley-Morales, PMP CEO at House Caddy
      5.0 ★

      Mobile App Development Review from Angie Tromley-Morales, PMP

      We hired Empat to design and build the MVP of House Caddy, a household management app that keeps receipts, warranties, manuals, and repair history in one place, with reminders for expiring warranties and maintenance. The product also helps homeowners prepare a full digital home history for future property transfers. Empat delivered end-to-end work: discovery, UX/UI design, Flutter mobile development, and a Python backend. They implemented a clear flow where users first create home appliances/systems and then attach documents and repairs to each item. A major highlight was Empats AI expertise. AI features simplify the entire user journey by auto-filling appliance details from photos/docs/links, assisting with utility provider setup, and importing contacts to speed up adding contractors. This reduced manual input and made onboarding fast and intuitive. Communication was excellent, with proactive brainstorming, clear sprint updates, and on-time delivery. The MVP is market-ready, early feedback is very positive, and Empat proved to be a reliable, product-driven partner with strong mobile, backend, and AI capabilities.

    • Vitalii Drach
      Vitalii Drach CEO at RD2
      5.0 ★

      Mobile App Development Review from Vitalii Drach

      We collaborated with this team to develop custom software for tracking our client base and analyzing performance metrics. The solution allows us to monitor client success in real time, visualize key trends, and make data-driven marketing decisions. The Empat team was professional, communicative, and highly attentive to our needs. They quickly understood our workflow and created a system thats both intuitive and scalable. Thanks to their work, weve streamlined our internal processes and gained much better visibility into our clients results. Were very satisfied with the outcome and would definitely recommend Empat to anyone looking for a reliable software development partner.

    • Namik Abdulzade
      Namik Abdulzade cto at Paymonix
      5.0 ★

      Software Development Review from Namik Abdulzade

      Collaborating with this team has been exceptional from beginning to end. They quickly grasped our goals and delivered a scalable, high-quality payment platform with seamless integrations and an intuitive interface. Their technical skill, attention to detail, and proactive communication kept everything running smoothly and transparently. We were particularly impressed by their ability to manage complex requirements, build strong analytics, and design a checkout experience that fits our brand perfectly. The project was delivered on schedule, surpassed expectations, and has already made a meaningful impact on our operations. We confidently recommend this team to anyone seeking a reliable, talented, and forward-thinking development partner.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (20)
    5.0 5.0 (40)

  • IT-Dimension

    Software Engineering That Creates Value

    We're a global team of developers, designers, and problem-solvers creating impactful software since 2007. IT-Dimension builds future-ready software from AI and IoT to mobile, enterprise, and 3D solutions...

    Top Services:

    • IT Services
    • Mobile App Development
    • Web Development
    • Product Design
    • Web Design
    • Show more
    Location
    West Hollywood, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $49/hr
    Portfolios Count
    4 Projects Listed

    IT-Dimension Services

    • IT Services
    • Mobile App Development
    • Web Development
    • Product Design
    • Web Design
    • Software Development
    • AI Development
    • Blockchain
    • VR/AR
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IT Industry
    • Fintech Industry
    • Standard Technology
    Data sourced from the agency's DesignRush profile
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  • Chop Dawg

    Verified Verified by the DesignRush team for authenticity and credibility. Award Winner Recipient of a Best Design Award for outstanding work.

    Meet The Partner Behind Your App's Success | Make It App'n!

    Meet your award-winning app development team, dedicated to turning your vision into scalable and profitable digital apps and software...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    52 Projects Listed

    Chop Dawg Services

    • Mobile App Development
    • Software Development
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • UI/UX Design
    • Software Testing
    • Wearables
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Alpha Paw
    • Big Brothers Big Sisters
    • Choice Home Warranty
    • City of Peachtree Corners, Georgia
    • City of Philadelphia, Pennsylvania
    • City of Springboro, Ohio
    • CRBO
    • FlynnO'Hara
    • Hilton
    • Innovative
    Data sourced from the agency's DesignRush profile

    Chop Dawg Reviews & Testimonials

    • Malik Boyd
      Malik Boyd Co-Founder at GyftMasters
      5.0 ★

      Mobile App Development Review from Malik Boyd

      Chop Dawg helped us turn our gifting app concept into a working prototype, handling wireframes, UI design, coding, data storage, and automation from scratch. Their team has been transparent, proactive, and highly responsive throughout the process. They provide clear schedules, flag issues early, and keep us informed at every stage. We’ve been very happy with the prototype so far and are excited to move into full iOS and Android development.

    • Anonymous
      Anonymous Founder at Cuddlebids
      5.0 ★

      Mobile App Development Review from Anonymous

      Chop Dawg took our iOS app from concept to launch, handling design, development, AWS, and App Store requirements. Their team was responsive, practical, and highly supportive throughout the process. They also stayed involved after launch with updates and fixes, and even helped promote the app through their network. Their support contributed to strong early growth and helped position the company for a later acquisition.

    • Anonymous
      Anonymous Executive at Undisclosed
      5.0 ★

      Web Design Review from Anonymous

      Chop Dawg supported us with UX/UI design for a new fintech web application. They took the time to understand our users, product requirements, features, and overall vision before moving into design. Over a 6 to 7 week engagement, their team shared regular Figma reviews, incorporated feedback quickly, and stayed highly responsive. They finished ahead of schedule with no budget issues, and the internal response to the final designs has been very positive. Their attention to detail, professionalism, and ability to keep the process organized made them very easy to work with.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (72)
    4.8 4.8 (76)

  • MetaCTO

    Build Mobile Apps that Grow Your Business

    MetaCTO will transform your vision into impactful mobile apps that drive new revenue, attract more customers, and keep them coming back longer. Our mission is to make your business a technology leader in your field...

    Top Services:

    • Mobile App Development
    • Software Development
    • Product Design
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    MetaCTO Services

    • Mobile App Development
    • Software Development
    • Product Design
    • Web Development
    • UI/UX Design
    • Digital Strategy
    • eCommerce Development
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • ParrotClub
    • MamaZen
    • My Atlas
    • iWorkflow
    • Social Mom
    • Hero's Calling
    Data sourced from the agency's DesignRush profile
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  • Goji Labs

    Verified Verified by the DesignRush team for authenticity and credibility. AI Leader Recognized for strong visibility across AI-powered search and answer engines.

    An Award-Winning Agency That Builds It Right

    Goji Labs builds custom web and mobile apps, AI-powered products, and digital platforms for startups and nonprofits, with clients like WWF and WHO. It serves healthcare, fintech, and media verticals. A practical fit for early-stage startups and mission-driven organizations needing a product partner...

    Top Services:

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • AI Development
    • Web Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $149/hr
    Portfolios Count
    19 Projects Listed

    Goji Labs Services

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • AI Development
    • Web Design
    • Product Design
    • Digital Strategy
    • Web Development
    • Blockchain
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • World Wildlife Fund
    • K-ID
    • City of Los Angeles
    • TGS
    • Kangarootime
    • World Health Organization
    • Prediction Strike
    • American Kennel Club
    • Youth on Their Own
    • Root Insurance
    Data sourced from the agency's DesignRush profile

    Goji Labs Reviews & Testimonials

    • Michael Krone
      Michael Krone Founder at ADAK Athletic
      5.0 ★

      Web Design Review from Michael Krone

      We partnered with Goji Labs for a complete app build, and they delivered exactly what we needed. Their team handled the entire project professionally and with great care from start to finish. I would highly recommend Goji Labs to anyone seeking a skilled and dependable development partner.

    • Wilson Rapp
      Wilson Rapp Co-Founder at eMedCert
      5.0 ★

      Software Development Review from Wilson Rapp

      We brought Goji Labs on board for a major migration project, and the entire experience was smooth and well-managed from start to finish. We could not be happier with the results. Their expertise gave us confidence throughout the process, and we would not hesitate to work with them again.

    • Sheila Reddy
      Sheila Reddy CEO at Mosaik
      5.0 ★

      Mobile App Development Review from Sheila Reddy

      As a founder with just an idea and a business model, I needed a partner who could turn that vision into a real product. Goji Labs guided me through every step of the process and built exactly the app we needed. Their expertise and patience made the entire journey manageable and rewarding.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (91)
    4.9 4.9 (57)

  • Black Flag Creative

    Web Design & Development Company Anchored in Los Angeles, CA

    We're a leading web design & development company in Los Angeles, CA – Specializing in UI/UX Design, Web Design, Product Design, & Web Development...

    Top Services:

    • Web Development
    • Web Design
    • Mobile App Development
    • Design Services
    • Product Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed

    Black Flag Creative Services

    • Web Development
    • Web Design
    • Mobile App Development
    • Design Services
    • Product Design
    • UI/UX Design
    • WordPress Website Design
    • SEO
    • eCommerce Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Toyota
    • DoorDash
    • Pfizer
    • Roche
    • Genentech
    • Autodesk
    • California Department of Education
    • Elevance Health
    • Anthem Health
    • ETS
    Data sourced from the agency's DesignRush profile

    Black Flag Creative Reviews & Testimonials

    • Katherine
      Katherine Review from Google
      5.0 ★

      Katherine's Review Sourced from Google

      What impressed me most about this company was how genuinely invested they were in bringing our vision to life. They truly cared about getting it right and shared in the excitement every step of the way. Their passion for what they do is obvious, and it made the whole process not just productive, but fun. It felt like they were part of our team, not just a vendor.

    • Christine mott
      Christine mott Review from Google
      5.0 ★

      Christine mott's Review Sourced from Google

      Black Flag carried us from concept to production on a very complex website with multiple interest holders. Designing a website for the California Department of Education means that we serve a varied user base and must adhere to the highest accessibility standards. Black Flag took input from internal teams, educators, and other interested parties that would be accessing and using the site. They adapted their designs to meet the needs of various types of users, coming up with not only attractive design elements, but created code that added automation to eliminate some of the manual updates. Black Flag provided us with a high-quality product and were so much fun to work with along the way. A helpful tip: save some of your funding for ongoing maintenance because once you start working with them, you won’t want to stop!

    • Rob Bowman
      Rob Bowman Review from Google
      5.0 ★

      Rob Bowman's Review Sourced from Google

      The team a Black Flag Creative interviewed our group at key milestones throughout the web design process to thoroughly understand our industry and the goals we want to achieve with our new website. I've been through a number of website updates with just as many web designers and Black Flag communicated with us in terms the layperson can understand, making it easy for us to provide content (both media and text) that would allow them to develop a website with the look and feel we wanted. They are just the right balance of website knowhow and flexibility in their thinking.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (12)

  • Ramotion

    Design Agency Bridging Product & Brand

    Ramotion is a San Francisco/Burlingame, California based digital product studio founded in 2009. The boutique agency blends brand strategy, UX/UI, web and mobile design, and front-end development to support startups through Fortune 500 companies. With a curated client roster and a team of ~70...

    Top Services:

    • Web Design
    • Branding
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Portfolios Count
    18 Projects Listed

    Ramotion Services

    • Web Design
    • Branding
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • Design Services
    • Product Design
    • VR/AR
    • Logo Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Adobe
    • Netflix
    • Salesforce
    • Mozilla
    • Xero
    • NBCUniversal
    • Turo
    • OPPO
    • Okta
    • Alabama Company
    Data sourced from the agency's DesignRush profile

    Ramotion Reviews & Testimonials

    • Alex Attarian
      Alex Attarian Founder at Mobile App Development Firm
      5.0 ★

      UI/UX Design Review from Alex Attarian

      Ramotion is a valuable and reliable partner. The agency pleases their client by consistently delivering quality work and contributing to apps that receive positive feedback. Ramotion is highly recommended to others.

    • Justin McAuley
      Justin McAuley CEO at Gaming Studio
      5.0 ★

      Mobile App Development Review from Justin McAuley

      Ramotion exceeded the client’s expectations by delivering outstanding work and contributing to great results. The client praises the agency’s approach of creating all designs from scratch. Ramotion is highly recommended to others.

    • Tony Beretin
      Tony Beretin Digital Product Innovations & eCommerce at Advance Auto Parts
      5.0 ★

      eCommerce Review from Tony Beretin

      The site’s improved layout resulted in decreased cart abandonment and increased yearly revenue. Ramotion’s creative talent contributed fresh ideas while respecting the original vision. Despite minor scheduling issues, they overcame these challenges after receiving feedback.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (23)
    5.0 5.0 (2)

  • HelpGood

    Marketing that advances your social impact and the common good.

    HelpGood is a full-service marketing and communications agency focused on social impact. Our clients are nonprofits, foundations, universities, government agencies, and purpose-driven organizations. HelpGood's offices are in Los Angeles and NYC. We are a certified B Corp...

    Top Services:

    • Web Design
    • Digital Marketing
    • Web Development
    • Branding
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $175/hr
    Minimal Budget
    $50,000 & Up

    HelpGood Services

    • Web Design
    • Digital Marketing
    • Web Development
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Ad Council
    • Smokey Bear
    • FPWA
    • NEXT for AUTISM
    • Planned Parenthood of NYC
    • Fountain House
    • Native American Heritage Commission
    • National Forest Foundation
    Data sourced from the agency's DesignRush profile
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  • Fishermen Labs

    Top Augmented Reality & Virtual Reality Agency

    An Immersive Media Agency specializing in the development of Extended Reality (XR, AR, VR, MR) experiences driving meaningful connections between brands & consumers. Our global team of skilled designers, artists, and developers craft creative narratives & experiences powered by emerging tech...

    Top Services:

    • VR/AR
    • Web Development
    • Mobile App Development
    • Product Design
    • Web Design
    • Show more
    Location
    Culver City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000

    Fishermen Labs Services

    • VR/AR
    • Web Development
    • Mobile App Development
    • Product Design
    • Web Design
    • eCommerce Development
    • UI/UX Design
    • Wearables
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • CBS
    • Coke
    • HTC
    • eBay
    • Giving Keys
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

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