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Post your Java projects on Upwork and hire expert software engineers and senior Java developers. They can create mobile applications for Android and iOS, redevelop Android widgets, modify and add new Java scripts to your custom Java software, or develop GUI applications with the Swing GUI widget toolkit. The java developers on Upwork are experienced in Java persistence frameworks (like Hibernate), web development, security or database frameworks and Java project lifecycle management tools (like Maven). They can also check, fix or add new Java classes into your Java code, or manage your software debugging, quality control software development or testing tool programming.

Java is a class-based, object-oriented computer programming language that is ideal for cross-platform application development. It comes with a library of commonly used classes and utility functions, called the Java API. On Upwork, the world’s largest online workplace, companies hire experienced Java architects and software engineers to develop all kinds of cross-platform applications, from torrent clients and media players, to helpdesk tools and mobile apps.

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Java Job Cost Overview

Typical total cost of Upwork Java projects based on completed and fixed-price jobs.

Upwork Java Jobs Completed Quarterly

On average, 489 Java projects are completed every quarter on Upwork.

489

Time to Complete Upwork Java Jobs

Time needed to complete a Java project on Upwork.

Average Java Freelancer Feedback Score

Java Upwork freelancers typically receive a client rating of 4.72.

4.72
Last updated: August 1, 2015
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  1. Varuzhan Sargsyan

    Varuzhan Sargsyan

    C/C++/VC++, C#, Android Java

    Armenia - Tests: 4 - Portfolio: 4

    Over 5 year I was freelancer and have developed the Android applications. Made few apps which are on Google Play now and which are very perspective projects. And more then one year, I'm working as Senior Android developer in company. Look into my portfolio to find the project links I have freelancer experience working on C# windows forms, WCF, MS SQL Server. Project Internal Audit System with 10.000 clients. Project is working nowdays beginning from 2011. Duration of working period takes more then 2 year. Biginning from 1997, I developed in 3-4 companies and have experience in c/c++ programming language, using all Visual Studio versions. I made a lot of programs for a few companies and a production. Using strong knowledge, experince, my programs made companies work more easy and automated. Also I can speak English, Russian, Armenian, and the draft software for production was made using Russian language(menus, messages and all other tools).

    $20.00 /hr
    73 hours
    5.00
  2. Vitali H.

    Vitali H.

    Software Architect / Developer, Java/J2EE, Android, Web

    Belarus - Tests: 1

    Wide experience in software engineering. Languages: - Java (Spring, EJB, Jersey, Atmosphere, Hibernate, OpenJPA, JMS, OAuth, Morphia, Web Services (SOAP, REST), Android, GWT, JSF/JSP, Swing, etc), - HTML, CSS, XML, Javascript (jQuery, Prototype, etc), Databases: MySQL, PostgreSQL Oracle, MongoDB; SEO & User behavior tracking: Google Analytics, Yandex Metrika OS: Ubuntu, Debian, CentOS, Windows; Web servers: Apache, Nginx, Tomcat, Glassfish, Jetty; Other services & tools: SVN, Git, Red5, JasperReports, Maven, JProfiler, Zabbix, Sonar;

    $20.00 /hr
    22 hours
    5.00
  3. Rahul A.

    Rahul A.

    Java,Grails,Google Script & Twitter Api Ninja

    India - Tests: 10 - Portfolio: 5

    Besides being an excellent communicator, I am a freelancer consultant with expertise over web,desktop and mobile applications. Till date I have obtained over 50 5* reviews which are true testimonials to the quality of service I have delivered. I am an express learner and I adapt and become adept to new technologies very fast. This is clearly reflected by my job history which shows the wildly different variety of jobs I have worked with and landed them to perfection. I have experience and mastery over several regimes. Primarily I am a java buff as I work with Groovy/Grails for web development and Android for mobile development. Both require supreme expertise over java. I have made a lot of applications using twtiter api. If its about twitter, its about me! Just see the jobs I have done for twitter in my job history and you will realize why I claim that. I am also proficient in making bots,web crawlers, email scrapers , automation tasks based on selenium web driver/htmlunit and jsoup. I have been heralded as the "bot master" by various clients I have worked with due to my outstanding performance in automation jobs. The reason for my success over each job I work upon is my exposure to a plethora of technologies which adds an extra edge to my artillery. I have worked on wildly diverse technologies including: 1) Web Application development: For web application development, I have experience with Grails. I am a master of this wonderful framework developed to make java development really easy and rapid. My role in past projects on grails includes implementation of Restful web services for sql/nosql databases as well as overall application design/development right from the inception to transition/deployment. 2) DBMS: I have worked on sql as well as no-sql. In sql, I have experience with MySql,Sql Server(2008),DB2,Oracle RDBMS. In no-sql, I am a mongoDB master. I have also worked with CouchDB(with android). 3) Desktop Applications: I have made several desktop applications using java swing and javafx. I also have knowledge of Griffon (Grails for desktop). All my applications are characterized by thread safety and robust framework architecture. 4) Mobile Application Development: I have good experience with android framework. All the apps I have worked with are characterized by nice UI and a stable lifecycle by proper handling of application states. My strength over core java concepts like multithreading, runtime polymorphism, inheritance comes in very handy with android app development. Apart from these, I can make background web services using grails for providing data to mobile applications. So you can find a full stack developer in me. 5) Scripting: I have developed various scripts using google app scripts, python and ruby. I have a full fledged ERP running on google drive using google app script with 0 cost for hosting. I always use the best technology for my clients which is light upon their budget. But above all, I consider strong communication skills as my killer strength due to which I got so much success in such a short span of time over this platform. Indeed you would love interacting with me- ITS A GUARANTEE ;)

    $30.00 /hr
    415 hours
    5.00
  4. Lalith Jayasinghe

    Lalith Jayasinghe

    JAVA | PHP |Automation | Linode | OpenShift | Heroku

    Sri Lanka - Tests: 3 - Portfolio: 4

    Looking for challenging desktop/web Application development(cross-platform) and Linux system administration. I am specially interested in... 1. Cross-Platform Automation. 2. Cross-Platform SEO Utility. 3. Linux server administration. 4. Cloud app development (OpenShift,Heroku,AWS,Google) I achieved sun(oracle) certification in 2005 and I have 7 years+ experience as coder.

    Groups: Corona Labs

    $11.11 /hr
    17 hours
    5.00
  5. Ivan javier R.

    Ivan javier R. Agency Contractor

    Java developer, Web programming, Desktop Applications.

    Colombia - Tests: 1

    Over the 5 last years, I have developed applications in java and in the last 4 years web applications using gwt. I also have experience using the following tecnologies: hibernate, ibatis, jasper report, apache poi, c++, sql.

    Associated with: BGX

    $18.00 /hr
    10,657 hours
    5.00
  6. Shareena Rasheedammal Fasaludin

    Software Engineer Java J2EE SQL Oracle Hibernate

    India - Tests: 7 - Portfolio: 1

    Strategic, Sun certified Java professional with 3 years of extensive experience in functional and technical implementation. To be associated with a progressive organization, aspiring to take up challenging assignments to build my career aspirations and to involve as a part of the team that dynamically works towards the growth of the organization. Other than Java technology I also have some experience in the following areas: SQL software design and testing.

    $10.00 /hr
    586 hours
    5.00
  7. Lotfi Fetteni

    Lotfi Fetteni

    JAVA/Android Developer, Software QA,Website QA

    Tunisia - Tests: 4 - Portfolio: 10

    Dear Clients, I have a national diploma in computer engineer. I am Java developer with 3 years experience in JAVA, Android, WORDPRESS. Worked with such technologies as JSON, HTML, XML, Oracle Database, MySQL. Over the last 3 years, I have developed a wide range of apps using Java, Android SDK,WORDPRESS, SOAP , XML and JSON. My core competency lies in complete end-end management of a new Android apps development project, and I am seeking opportunities to build apps from the ground up for you or your business. I also have some experience in the following areas: C, OOP, and software design and testing. This variety allowed me to understand the real needs of my clients and to translate it to reality. I'm responsible, creative and hardworking developer and I'm always interested in finding new projects, where I can realize my knowledges. I am looking for challenging projects where I can put into service my skills and contribute to their success. Thank you for reading my profile. Lotfi

    $6.00 /hr
    2 hours
    2.95
  8. Ganga M.

    Expert Java/J2EE/Grails/Atlassian/Composite Developer

    India

    • Certified SCJP,SCWCD Developer • Has 9 years of experience in Java/J2EE/Groovy/Grails software Design, Development.Worked extensively on Altassian products (Jira, Confluence, Bamboo and fisheye/Crucible) Developing and Enhancing Altassian Product plugins. • Worked In major JIRA, confluence, fisheye and bamboo upgrades • Have Good knowledge on Agile Software Development life cycle and Tools (JIRA) involved in this. (Certified Scrum master) • Working in Sonar and its plugins to integrate to different applications( java, PHP etc., ) • Good Working Knowledge in Composite ETL tool. • Good Working knowledge in TDD, application release and deployment cycles. • Good working Knowledge in Nexus Repository Management. • Developed/enhanced 20-30 altassian products plugins. • Good working knowledge in OSGI based applications.

    $15.00 /hr
    49 hours
    0.00
  9. Mukhtar Patel

    Java Developer with 15 years experience

    United Kingdom - Tests: 3

    I am a IT Consultant with over 15 years experience in IT which has been gained in various Business Sectors including Finance, Utilities, Telecommunications, Education, Public Sector and Insurance industries. I have built up a wide range of business acumen and best practice, and have often found imaginative, cost effective solutions where others have not. During my employment I have had varied roles, and as a result I am capable of working on the full life cycle of a project from initial customer requirements, architecture, design, implementation, testing, configuration through to delivery.

    $50.00 /hr
    0 hours
    0.00
  10. Mariya Volzheva

    Mariya Volzheva

    DB dev(Oracle,MSSQL,MySQL) + Java/JSP/PHP/CSS

    Ukraine - Tests: 5 - Portfolio: 2

    I prefer to work in the field of database development: Oracle, MSSQL, MySQL, Postgres, that includes database design, optimization, migration and integration. Besides I gained experience in developing software: web-portals (Java / JSP / Java Servlets, PHP, HTML, CSS, java script), C# applications (web services mostly), Java apps. I'm looking forward for opportunities to improve existing skills and to learn new technologies.

    $20.00 /hr
    884 hours
    4.89