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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, 575 Java projects are completed every quarter on Upwork.

575

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: July 1, 2015
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  1. Thomas Congrove

    Thomas Congrove

    Software Developer, Production Support, entry level DBA ltd. avail.

    United States - Last active: 04/16/2014

    Currently working as an Sr. IT Applications Developer for a Fortune 100 company. Recently retired from a two year tour as a software engineer and DBA for the military. My availability is limited by my primary development job, but if you have something small or just want a second set of eyes on your project, I'd be glad to assist!

    $25.56 /hr
    27 hours
    0.00
  2. Siarhei Kirpichonak

    Siarhei Kirpichonak

    Java, liferay, OpenClinica, EDC, Clinical Trials

    Belarus - Last active: 5 days ago - Tests: 3 - Portfolio: 6

    I'm involved in software development during last 9 years. I have good abilities and I'm looking for Java and liferay projects. Skills: Scala (Lift, Play), Akka, Java (Spring, Spring Web MVC, Lucene, Compass, Struts, GWT, JPA, Hibernate, Toplink, JAXP, Castor, Ant, Maven), Java EE (EJB, JSP, Servlets, JMS), RDBMS (PostgreSQL,MySQL, Oracle), (X)HTML/CSS/Javascript, XML/XSLT/XPath, PHP, GNU/Linux

    $30.00 /hr
    1,322 hours
    4.90
  3. Giovanni Bembo

    Giovanni Bembo

    System Administrator & Network Manager

    Italy - Last active: 19 hours ago - Tests: 55 - Portfolio: 1

    I've more than 20 years experience of UNIX-like systems and Windows Servers administration; I've got my first personal computer when I was ten (1989) and have more than fifty oDesk certification tests passed. I'm the author of a new name system for Internet: the Free Name System project, [www.freenamesystem.it ][1](in Italian). Actually, i'm getting PhD in Computer Science Engineering at University of Rome 2 (Tor Vergata). Theese are my skills: C, Java (senior programmer); PHP (with SQL server management also, senior developer); SCO UNIX, FreeBSD and other similar O.S. + various Linux distributions such as Slackware, SuSE, Red Hat, Debian, etc. (senior system administrator); MySQL DBMS; TCP/IP distributed application developing (client-server and p2p); Windows Server and Microsoft domains; TCP/IP firewalling, packet filtering, packet encription (SSL, IPsec); Apache web servers. I've also a good experiences with what follows: IIS web servers; Microsoft Exchange (both standard and enterprise editions); C++ programming; COBOL and Pascal programming; Other DBMS such as Microsoft SQL server and Borland Interbase; Adobe Flash MX. [1]: http://www.freenamesystem.it

    $11.11 /hr
    34 hours
    4.55
  4. Cancri T.

    Cancri T.

    Business Intelligence At Affordable Prices

    India - Last active: 19 hours ago - Tests: 1 - Portfolio: 47

    Web Design and Development, CMS (Wordpress, Joomla, Drupal), Ecommerce (Magento, Prestashop, Big Commerce, Zencart, OSCommerce, Shopify, X-Cart, WP Ecommerce, Volusion), Autoresponders, MailChimp, Infusionsoft, 1Shoppingcart, HTML Emails, Portal Development, Software Development(Java, PHP) - Have Ability and willingness to provide effective business solutions on wide range of verticals and IT platforms. Offer business solutions with the sole objective of customer delight, thus ensuring the success and efficient management of my customer's businesses.

    $15.00 /hr
    1,090 hours
    4.86
  5. Jigarbhai Patel

    Jigarbhai Patel

    Expert C/C++/C# Programmer, Algorithms Developer, Technical Writer

    India - Last active: 19 hours ago - Tests: 3 - Portfolio: 10

    "I believe in providing best quality services to my valuable clients." I have received the Bachelor of Engineering degree in Computer Engineering from Hemchandracharya North Gujarat University, Patan, Gujarat, India, in 2005 and the Master of Engineering degree in Computer Engineering from Dharmsingh Desai University, Nadiad, Gujarat, India, in 2008. My Part-time Ph.D. in Computer Engineering from Uka Tarsadia University, Surat, Gujarat, India, is pursuing since January 2013. My research interests include Artificial Intelligence, Computer Algorithms, Optimization, Machine Learning and Lean Manufacturing. I have excellent C/C++/C# programming proficiency. I have one year experience of Programmer and Customer Support Engineer & seven years experience of Assistant Professor in reputed Engineering Colleges. I have successfully developed several projects in C/C++/C#, guided 40 major projects of undergraduate students, 10 research projects of postgraduate students, published 7 research papers in international journals and attended 4 workshops & training programs organized by IIT Bombay & Nirma University. I have excellent proficiency to write high quality articles, blogs and e-books. I have effectively and efficiently solved the following combinatorial optimization problems by designing & implementing various algorithms such as A* search, brute-force-search, breadth-first-search, depth-first-search, branch-and-bound algorithm, hill climbing, greedy algorithm, genetic algorithm etc... in C/C++/C#. 1. Workforce scheduling and routing problems 2. Capacitated vehicle routing problem with time windows 3. Traveling salesman problem 4. Crew allocation & scheduling problem 5. Home health care problem 6. Job-shop scheduling problem 7. Tasks allocation problem 8. Packing problem 9. Cell formation problem 10. Machine layout problem 11. Cell layout problem 12. Circuit-satisfiability problem 13. Subset-sum problem etc… I have also developed projects of neural networks as follows. 1. I have trained perceptron for binary classification which can be used to predict whether a given car is a family car or not. 2. I have also trained perceptron for multiclass classification which can be used to classify the input into one of output classes namely car, human or dog. 3. I have also developed multi-layer feed-forward neural network to learn XOR function. I have taught various subjects at undergraduate & postgraduate level such as Microsoft Office, C, C++, Artificial Intelligence, Computer Algorithms, Computer Graphics, Computer Network, Computer Communication & Networking and System Programming.

    $50.00 /hr
    33 hours
    5.00
  6. Muthumuni chandika predeep K.

    Muthumuni chandika predeep K. Agency Contractor

    .....Your Satisfaction is My Success.....

    Sri Lanka - Last active: 26 days ago - Tests: 2

    Highest Quality Work @ Lowest Possible cost with compare to any where With in required time limits. Quick Supporting Available for every clients. IT guru here, so Select me with confident for any IT work. My best Expertise area is: PHP, MySQL, HTML, JavaScript, MS office Applications, MS Office Automation. VBA macro, VBA Web Scraping, Other Web Scraping, iMacros, Email Scraping, Automate Email Response Handling, HTML Design, Dream viewer, Visual Studio, Visual.Net, Photoshop, Auto CAD, C program, Batch Command File, etc... Still I can Really help for any kind of freelancing work. Thank you and Warm Regard muthumuni

    Associated with: ITguru

    $25.00 /hr
    77 hours
    4.84
  7. Chetan P.

    Chetan P.

    JAVA, Webservice, Java Script ,Tomcat and MYSQL

    India - Last active: 10/29/2014 - Tests: 2

    Over the last 6 years, I have developed a wide range of applications & websites using using Javaand related teccnologies:PHP, Java, J2EE, Struts, Spring, Hibernate, HMTL, DHTML,JSP,Servlets,IText tool , MySQL,Oracle ,MSSQL JBoss ,Tomcat, AMF, BlazeDS, SOAP, JSON, XML and flex. I am seeking opportunities to build websites from the ground up for you or your business. Hardworking, team and goal oriented, challenge seeking, work well underpressure. Ready for sporadic overtime.

    $8.89 /hr
    0 hours
    5.00