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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, 584 Java projects are completed every quarter on Upwork.

584

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 4.70.

4.70
Last updated: July 1, 2015
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  1. Boris F.

    Boris F.

    Software Engineer

    Serbia - Last active: 6 days ago - Tests: 4

    I am the person who get the job DONE. Specialties: -Software Engineering, Software Process, Project Delivery -Distributed and Cloud Computing (AWS dominated) -Continuous Integration And Delivery -Code Quality and QA -Software Testing (unit tests, integration tests, system tests, functional tests) -Machine Learning (Neural Network ) -Image Processing and Computer Vision -Biometric Systems Design and Implementations -Computer Networks Design and Administration

    $44.44 /hr
    2,016 hours
    5.00
  2. Osam Aziz

    Osam Aziz

    Consultant, Project Manager, Full-Stack Dev, Sysadmin and Designer

    Canada - Last active: 11/18/2014 - Tests: 3

    As a full-stack developer with transferable skills and close attention to details, I am able to handle projects from start to finish with minimal supervision because I have an excellent general sense of what a product should and shouldn't do. I’ve designed and implemented many software systems. In most of the positions I’ve held, I’ve been involved in the full life-cycle of the project, from requirement analysis, initial design and implementation through to deployment and production support. My strongest technical expertise currently lies with Python (Django, Flask), PHP (Zend Framework, Laravel, Yii, FuelPHP, CodeIgniter), JavaScript (jQuery, AngularJS, Ember.js, Node.js), mobile apps (PhoneGap/Cordova and Corona SDK) and responsive web design with HTML5 and CSS3. I have also worked with a range of other languages and technology stacks, including Ruby, Perl, Shell scripting, Java, C#, Go, Lua and more.

    $59.00 /hr
    485 hours
    5.00
  3. Aleksandr Tolstikov

    Aleksandr Tolstikov

    Drupal / PHP expert

    Russia - Last active: 17 hours ago - Tests: 4

    Over 8000 hours on oDesk (only Drupal related). Highly motivated, goal-oriented, hands-on senior software engineer with extensive technical skills and over 15 years of experience in software development. - Expert knowledge of Drupal CMS; - In-depth knowledge of systems architecture and software design methodologies; - 10+ years of experience in web application development using PHP; - Extensive experience in relational database management systems, mainly with MySQL; - Experience in Linux systems administration; - Strong understanding of networking/Internet protocols and formats; - Experience in architecting, implementing and maintaining full-text search platforms;

    Groups: Bluehost Developers and Designers, Drupal

    $40.00 /hr
    8,626 hours
    5.00
  4. Dimitris Manikis

    Dimitris Manikis

    Software Architect

    Greece - Last active: 1 day ago - Tests: 1

    Software architect and solutions architect experienced in Enterprise Architecture, SOA, Telecoms, Machine Learning, Information Retrieval, Data Mining with focus to solutions based on open standards and open source software. Software Development experience since 1994. Last 10+ years working mainly with Java based technologies. Quick learner, self motivated, passionate about learning new technologies, have worked in a couple of start-ups from the ground up and in various areas of an enterprise such as architecture, software development, R&D, business development and project management.

    $55.56 /hr
    3,694 hours
    5.00
  5. Nikolay C.

    Nikolay C.

    Brainbench certified JSE/JEE dev, DB dev, Sys-Arch

    Ukraine - Last active: 5 days ago - Tests: 2 - Portfolio: 11

    Would you like to find a powerful Java-dev? If so, please read further... 1. Intentions I'm working as a free-lancer more than 2 years already, and worked > 12 years in scientific and software engineering areas. I'm here because I'm looking worldwide for interesting work related to software development using the following technologies (some or all): - Java 5/6/7 (JSE, Swing, CORBA, Web Services, etc.) - JEE5/6 (EJB3, JSF, Hibernate, etc.) - GWT, Spring, Struts, etc. - And other JSE/JEE-related frameworks - GlassFish, Tomcat, JBoss, Jetty, etc. - JME (CLDC 1.1, MIDP 2.0) and Android - Maven, Ant, etc. - Oracle, MySQL, PostgreSQL and other DBMS - Some sub-tasks could be related to C/C++ with STL (but NOT the whole project!) - UML and/or Agile Modeling - Well-organized Agile processes - Etc. It would be nice to be involved into software concepts and architecture development. Also it would be nice to have possibilities for applying my initiative and creativity. I'm ready to work as a free-lancer for the beginning up to 40+ hours per week), and you may hire me as a full-time employee as well. I'm ready to move mostly to any country or city. In such case I'm ready to start as a developer (or senior developer), but with possibility to grow up to TL, and further up to SA or PM (of course, starting from TL or SA would be nice). 2. Education - University Master Degree in the area of Informatics and Computer Systems 3. General Skills I have a wide working and scientific experience with dozens of technologies (> 14 years). The most deep experience I have with the following techs: - JSE5/6 and J2SE (Java Core, Multithreading, AWT, Java2D, Swing, CORBA, WebServices, Networking, etc.) - since 1998 - JEE5 (EJB3, Hibernate3, JSF, CometD, Jetty, Tomcat, JBoss, GlassFish) - about of 5 years - J2ME (CLDC 1.1, MIDP 2.0, WMA) - about a year - Other Java techs (Jakarta Commons, Log4J, Velocity, Maven, Ant, etc.) - many years - Android development (support about 0.5 years) - C/C++ and STL - since 1995 (STL from 2001) - Oracle 9i/10g, MySQL, PostgreSQL, InterBase - since 2000 - OOA/OOD/OOP and UML Modeling - since 1995 (UML from 2001) Large experience with the following platforms and tools: - Windows - since 1995 - Linux/UNIX - since 1997 - MS Office (incl. Visio and Project) and Star/OpenOffice - since 1997 - IntelliJ IDEA, NetBeans, Eclipse - since 2001 - C++Builder and Delphi - since 2000 - PL/SQL Developer - since 2005 - Enterprise Architect and other UML tools (Rational Rose, Poseidon, etc.) - since 2001 Git, SVN and CVS - since 2001 Management Skills - since 2004 (worked on TL and PM positions) Architect Skills - since 2000 (designing concepts, business models and architectures for quite complex scientific, B2C and B2B applications) Language Skills: - Russian - native - English - fluent, working language since 2001, ~1000 pages of docs written - German - intermediate (quite fluent, but non-perfect) - Ukrainian - can understand in 100%, cannot speak/write fluently 4. Contacts - You can contact me via oDesk. Usually online (GMT): - 10:00am - 5:00pm - 7:00pm - 10:00pm

    $40.00 /hr
    14,416 hours
    5.00
  6. Vitaly Sas

    Vitaly Sas

    Expert Android developer

    Belarus - Last active: 5 days ago - Tests: 3 - Portfolio: 3

    I specialize in developing Android apps and have over 4 years of experience in commercial app development. I'm looking for a interesting projects to do a really good job. Challenge me and I'll do my best to create high-quality app in order to meet your wishes. I look forward to working with you. Thank you for reviewing my oDesk resume. Best regards, Vitaly Sas.

    $50.00 /hr
    1,453 hours
    4.90
  7. Aldrin L.

    Aldrin L.

    Architect, Backend Engineer (Scala, Java, Hadoop)

    Brazil - Last active: 8 days ago - Tests: 12 - Portfolio: 1

    Over the past 15 years I've worked with projects ranging from Startups to Fortune 100s. From C++ to Scala, past assignments involved: - Protocol Design in C++/Delphi - Java API Publishing - Maven Plugin Development - Distributed Systems using RESTful backends - Scala / Akka Design - Jenkins Plugins Writing On a daily basis, I spend between Systems Architecture, Build Planning, for Hadoop and Restful Backends, specially under Amazon Web Services. Oh, I'm also a Cloudera Certified Administrator and Developer. Favorite platforms include Scala, Python and General Java. See my full profile for more descriptions and feel free to browse my github and bitbucket profiles at the addresses below: http://github.com/ingenieux http://bitbucket.org/aldrinleal Favourite customers involve pragmatic teams, with contant online presence, and direct involvement with the end customer, and a problem involving legacy and the next generation Feel free to discuss our next project - I'm always looking for the next challenge!

    Groups: LoginRadius, Microsoft Certified Professionals

    $55.56 /hr
    3,112 hours
    4.82
  8. Zdenko Hrcek

    Zdenko Hrcek

    Python/Django/GAE Full Stack, Backend Developer

    Czech Republic - Last active: 1 day ago - Tests: 6 - Portfolio: 4

    During my years as a software consultant, I have realized that communication with client is most crucial. That's why I make every effort to understand requirements of the task that's need to be done, remove ambiguities, make thorough analysis, suggest solution and implement. My expertise is in programming Python / Django / Google App Engine (Google Cloud Platform) projects. Beside that I have knowledge of other web technologies (HTML, CSS, Javascript...) and Java. I am very open to new challenges and problems. I prefer working on Linux. I am constantly improving my skills and knowledge in all areas. Experience with scrapping e-shops, real estate websites using BeautifulSoup Experience with other Python frameworks like Webapp2, Flask and Bottle For frontend I am comfortable working with Angular JS.

    $40.00 /hr
    883 hours
    5.00
  9. Eric S.

    Eric S.

    Senior Web & Mobile Expert

    China - Last active: 17 hours ago - Tests: 32 - Portfolio: 25

    Web Master with 8 years of experience in designing, developing, improving and maintenance. For the last 2 years, I worked on 3 projects as project manager & developer and led them to success. Always trying to complete project perfectly by suggesting innovative solutions. *** Areas of Expertise *** - Advanced programming and designing skills - Project Management - Risk Management and solving skills - Teamwork - Website Optimization, SEO *** Technical Skills *** PHP, Ruby, NodeJS, HTML5, CSS2/3, Javascript, Java, MySQL, Oracle, PostgreSQL, MongoDB, Wordpress, Magento, Ruby on Rails, Zend, Joomla, Drupal, YII, Laravel, JQuery, JQuery UI, VelocityJS, AngularJS, Greensock, ScrollMagic Bootstrap, SCSS, LESS, Responsive Design, Parallex Design, Redmine, GetFlow, Pivotal, Git, SVN, Github, General skill in Amazon Web Services, CPanel Management, Mojohost Management

    Groups: BigCommerce, BoonEx...

    $50.00 /hr
    11,059 hours
    4.95
  10. Mohamed Faramawi

    Mohamed Faramawi

    Full Stack Senior Software Engineer

    Egypt - Last active: 17 hours ago - Tests: 2 - Portfolio: 1

    Im a software engineer backed by 12 years of experience and proven ability to develop high-performance applications and technical innovations. My technical experience areas includes : Working on cross-platform solutions (Windows, Linux). Built solutions using several scripting/programming languages (Java,Python,C#,JavaScript,PHP,ASP.NET,Node.js). Experience in data storage solutions (MS SQL Server, MySQL, Mongodb, Redis). Advanced knowledge of web development frameworks/tools and best practices (HTML,CSS,JQuery,Backbone.js, Django, Pyramid,Express.js) Large data processing tools (Hadoop) Web servers like (Apache, Nginx, Tomcat, IIS) Unit testing frameworks and continuous integration tools. Source Version Control applications (SVN, Git) Amazon Cloud Services (AWS, S3) And there is much more to list of skills i gathered over the years.

    $45.00 /hr
    5,699 hours
    4.93