Senior Java Developers & Programmers

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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, 623 Java projects are completed every quarter on Upwork.

623

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: May 1, 2015
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  1. Alexey B.

    Alexey B. Agency Contractor

    Senior Java Developer / Team lead: Java/J2EE

    Ukraine - Last active: 1 day ago - Tests: 2 - Portfolio: 6

    IT-Specialist with more then 15 years experience in software development. Over last 12 years I was working on web sites/portals development using Java and related techs: JSF, Facelets, RichFaces, Spring, Seam, JPA, Hibernate, EJB, Portlets, Maven, HTML, DHTML, CSS, JavaScript. JBoss AS, JBoss Portal, Tomcat, AMF, BlazeDS, SOAP, JSON, XML. Over last 7 years worked as team lead/architect. Last 3 years spent as project manager for eCommerce platform server-side/portal development. Hardworking, team and goal oriented, challenge seeking, work well under pressure. Ready for sporadic overtime.

    Groups: Yahoo Web Hosting Designer

    Associated with: U268

    $33.33 /hr
    15,546 hours
    4.86
  2. David C. Toledo Sanchez

    David C. Toledo Sanchez

    Developer Android, Java ,J2EE

    Peru - Last active: 4 hours ago - Tests: 10 - Portfolio: 39

    Over the last 5 years, I have developed a wide range of android applications and 2 in iphone, and I have 12 years from experience development in java and Java Applications Server . I am seeking opportunities to build new android apps. Android Skills: Advanced UI Design , SQLlite, Google Map Api1, Api2, In App Billing, Fragment, Sherlock Fragment, Facebook Api, Twitter API, Json , Rest Webservice Integration, QR Code, Background Service, GPS Service, Bluetooth Integration, Admob, OAuth, Urbain Air Ship, Push Notification, FTP Server API, Photo Gallery, RSS Feed Reader, Widget Api, WallPaper Live Framework, IME Keyboard, Audio/Video Steam, Git, SVN, LibGdx, Eclipse, etc

    Groups: Android, Application Developers Alliance

    $36.67 /hr
    7,335 hours
    4.82
  3. Gennady Svarovskiy

    Gennady Svarovskiy

    Java/C++/Perl professional

    Russia - Last active: 1 day ago - Tests: 11 - Portfolio: 1

    I am Java developer specializing in web projects and I have good experience with different Java frameworks and technologies including (but not limited to) most popular Spring and Hibernate. Also, I created AJAX front-ends based on jQuery, Bootstrap and DoJo on client side and various REST API frameworks on server side. Besides that I like developing and implementing non-trivial tasks that go beyond traditional CRUD action. Due to good knowledge of GNU/Linux OS (and its most popular daemons: Apache, Tomcat, MySQL/PostgresQL, Postfix/Exim, Named/Bind, iptables) I also can offer full support of application life from initial server setup to continued maintenance after main development is complete.

    Groups: Coding Champs

    $38.89 /hr
    2,632 hours
    5.00
  4. Alexey Dubrov

    Alexey Dubrov

    Java Solutions Architect

    Belarus - Last active: 1 day ago - Tests: 2

    High skilled Java Developer. My specialization is web/backend development using such technologies as Hibernate, Spring (MVC, Security), JSP/JSTL, Tomcat, JavaScript/JQuery, Maven, RESTful API, Web Services (SOAP). Any desktop (using Swing) development also can be provided as well as utility program development and multi-threaded systems. I'm looking for customers for a long-term cooperation. I would like to offer you my skills and expereince to solve your issues.

    $38.89 /hr
    1,428 hours
    5.00
  5. Ioannis F.

    Ioannis F.

    Java Software Engineer

    Greece - Last active: 1 day ago - Tests: 4

    Senior Software Engineer. During the last 11 years I have worked on developing a large number of different applications and/or components, including web applications, CMS, RESTful APIs and server-side components for mobile applications and mobile marketing. Core technologies and frameworks involved were Java, Spring/Spring MVC, Jersey, JPA & Hibernate, JSP, XML, HTML, CSS and a range of JavaScript libraries and frameworks. I have extensively used a large number of software engineering tools, including Maven, Ant, Nexus, Hudson, Bamboo Subversion, Git. I'm eager to use new and fascinating technologies for development of state-of-the-art applications.

    $45.00 /hr
    4,006 hours
    5.00
  6. Bilal Siddiqui

    Bilal Siddiqui

    Java and XML consultant

    Pakistan - Last active: 4 hours ago - Tests: 1 - Portfolio: 3

    I am an electronics engineer, XML consultant, technology evangelist, and frequently published technical author. After graduating in 1995 from the University of Engineering and Technology, Lahore, I began designing software solutions for industrial control systems. Later, I turned to XML and built web- and WAP-based XML processing tools, server-side parsing solutions, and service applications. Since 2006, I have focused exclusively on Java- and XML-based open source tools and solutions. A strong advocate of open source tools, I not only design solutions based on them but also train software and IT personnel at Lahore universities in using open source technologies. I am the author of JasperReports 3.6 Development Cookbook (Packt Publishing, 2010). Please see my following articles that I've been writing to display my work. Data visualization, Part 1: Visualize browsing metrics with SVG and D3 http://www.ibm.com/developerworks/opensource/library/os-dataviz1/index.html?ca=drs- Data visualization, Part 2: Use D3 component layouts http://www.ibm.com/developerworks/opensource/library/os-dataviz2/index.html Bonita for business process management, Part 1: Configure a simple workflow http://www.ibm.com/developerworks/opensource/library/j-bpm1/index.html Bonita for business process management, Part 2: Configure forms and variables http://www.ibm.com/developerworks/library/j-bpm2/ Integrate social networks into BPM, Part 1: Collect Twitter data http://www.ibm.com/developerworks/library/j-sb1/ Integrate social networks into BPM, Part 2: Add Twitter data to CRM http://www.ibm.com/developerworks/library/j-sb2/ XML Canonicalization http://www.xml.com/pub/a/ws/2002/09/18/c14n.html http://www.xml.com/pub/a/ws/2002/10/09/canonicalization.html Integrating healthcare services, Part 1: Using an Enterprise Service Bus for healthcare https://www.ibm.com/developerworks/java/library/j-hsb1/index.html Integrating healthcare services, Part 2: Using Apache ServiceMix as a Healthcare Service Bus https://www.ibm.com/developerworks/java/library/j-hsb2/ Design XML schemas for enterprise data https://www6.software.ibm.com/developerworks/education/x-schemadata/x-schemadata-a4.pdf Build configurable workflows with WS-BPEL and IoC, Part 2: Developing and hosting BPEL workflows http://www.ibm.com/developerworks/java/library/j-bpel-ioc2/index.html Deploying Web services with WSDL, Part 1: Introduction to Web services and WSDL http://www.ibm.com/developerworks/library/ws-intwsdl/ Securing Java applications with Acegi http://www.ibm.com/developerworks/library/j-acegi1/ Web Services Security, Part 1 http://www.xml.com/pub/a/ws/2003/03/04/security.html Web Services Security, Part 2 http://www.xml.com/pub/a/ws/2003/04/01/security.html Implementing XML Encryption in Java http://www.xml.com/pub/a/ws/2004/04/21/wss4j.html

    $35.00 /hr
    546 hours
    4.96
  7. Parameswaran M

    Parameswaran M

    Java EE/SugarCRM Specialist

    India - Last active: 7 days ago - Tests: 5 - Portfolio: 2

    • 8+ years of work experience with 7 years of extensive experience in developing Complex Web applications in PHP and Java EE • Expertise in PHP/Javascript/HTML 5/Node JS/Angular JS • Received many awards for outstanding performance and enthusiasm • Very Strong in fundamentals, and has handled various training sessions and webinars on web development topics

    $50.00 /hr
    403 hours
    4.98
  8. Anuradha Gunasekara

    Anuradha Gunasekara

    Java Software Consultant

    Sri Lanka - Last active: 1 day ago - Tests: 1

    - a Java Client/IDE Tooling 8*-development experience, Including both *Netbeans and *Eclipse Platforms. - a Passionate and dedicated open-source contributor. - Specialised in integrating technologies together. - a Professional certifications from Sun Microsystems on Java Technologies. - a Sun Microsystems/NetBeans Innovators Grant Gold Award Medalist http://netbeans.org/grant/ Specialties: Java SE/EE, Open Source, Netbeans RCP/Swing, Eclipse RCP/SWT/RAP,RAP,OSGi, Maven, Tycho,IDE Tooling., Task-focused interface,EMF,JavaFX, M2T(Acceleo),

    $35.00 /hr
    279 hours
    5.00
  9. Chirag J.

    Chirag J.

    Python/Java Developer

    India - Last active: 6 days ago - Tests: 4 - Portfolio: 2

    Python/Java developer with 5 years of experience in back end and front end development. My experience ranges from creating highly concurrent back-end services to beautiful responsive landing pages designed for mobile and desktop screen sizes. Although, my expertise is in developing and troubleshooting/optimizing efficient and reliable back end services. I am always learning new technologies and would love have an opportunity to work on a project using Haskell or Rust.

    $33.33 /hr
    5,488 hours
    5.00
  10. Ramesh V.

    Ramesh V. Agency Contractor

    Expert Java J2EE Developer

    India - Last active: 1 day ago - Tests: 3

    I am an expert Java J2EE developer with 9 years of coding experience I provide outsourced services for Java, J2EE and Angular JS. I can handle a project from requirement gathering, analysis, design, coding (both backend and frontend), Junit Test cases and automation tests. Project Experiences: Yayo is an eCommerce platform stitched specifically for the needs of Film Production Companies. I have designed and developed API's for both mobile and Partners, built a portal for Production Company Managers. Involved in the development of a project Moose, which uses GWT and Sencha GXT. Also implemented Full Text Search in GAE by providing an objectify kind of framework. Designed and developed Sentinel project, which provides Guest Access Portal. Used Free Radius and Jradius modules to authenticate dynamically generated Guests. Sentinel has 3 modules, Admin Portal, Sponsor Portal and Guest Portal. Paladin MultiOS is a Wireless security deployment platform and device tracking/management platform. It provides a reliable and affordable solution for deploying and monitoring secure networks in the age of BYOD. This is deployed on Amazon EC2 linux with tomcat as web server. Eostis is one of the leading classifieds website in France. I have worked to move eostis from the old legacy system to Google App Engine and made it survive from the maintenance issues and frequent server deeds. Involved in the development of several live online projects like http://www.theflowerexpert.com , http://www.pickupflowers.com , http://www.giftsnideas.com and http://www.flowersforcelebrations.com. Migration of a legacy ehealth tool to web application (Central Configurator) by using Spring, Hibernate, Web Services and Ibatis. Migration of a command line tool to GWT + EXT GWT web application. Provided a Command Line Interface for a web application by using Web Services. Google App Engine Projects: Converting SAP reports from email attachments to google spreadsheets. Developed a GAE + Vaadin application for a sales company to maintain there whole inventory.

    Associated with: Soft Suave

    $33.33 /hr
    3,481 hours
    5.00