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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. David Camacho

    David Camacho

    Expert web java developer and project management

    Colombia - Last active: 08/28/2013

    I’m a systems engineer, whit skills in team leadership, analysis, software design and programing; I also have a high learning level, a very important ability to solve new challenges in real time. I like doing research, keeping update on new technologies, frameworks and tools and the knowledge from them. One of the main skills I have is the high efficiency and effectiveness problem solving and a great adaptability to changing conditions.

    $16.67 /hr
    0 hours
    0.00
  2. Varun V.

    Salesforce Certified Developer and Admin with 9+ Years of Experience.

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

    Hi, I am Salesforce certified developer with around 10 years of experience. I am an experienced and dedicated person who believes and feels that quality should never be compromised, Hence I use my experience and dedication in delivering code and product with best quality in least amount of time. In past 10 years I have worked for clients across the globe on variety of projects let it be Customer portal, Partner Portal, Webservices (Rest , Soap) , Open OAUTH, Single Sign On, Apex, Visualforce pages, Data Loader Automation , Email Services , Heroku for creating and hosting Java Web services. I have delivered it on time and with minimum or no bugs! I also have experience in MySql, PHP, and Java. Thanks.

    $25.00 /hr
    45 hours
    0.00
  3. Kari Hirvi

    Kari Hirvi

    C++/Qt/Matlab/Python developer with scientific background

    Finland - Last active: 2 months ago - Tests: 7

    I have years of experience with Matlab and I'm very productive with it, whether it's algorithm development, visualizing data or creating GUIs, for example. I'm also well versed in Python and I can provide a working software version quickly with rapid iterations with feedback from the client. I have also professional experience with C++, C# and Java, and I can bundle them into the project as needed. I have a PhD in physics and I've been working in different positions ranging from project manager and developer to customer service and helping sales. I can translate your problem into working code, and, if needed, refine the project requirements based on your business case. Below are few examples where you could gain tangible benefits from my experience - Matlab development of all kind, e.g., algorithms, GUIs, full applications - Data conversion and processing from one or multiple sources - Implementing algorithms based on scientific publications - Converting algorithms from another language to C++,C#,Java, Python or Matlab - Data analysis and visualization - Requirement analysis & management, e.g., reading texts and extracting measurable requirements from them with traceability to the source - Measure requirements quality by classifying them, e.g, is there an acceptance criteria, is this a system or user requirement, does the requirement have multiple requirements in it. - Creating and writing acceptance testing procedures with traceability to the project requirements I can work on both Windows and Linux platforms. Looking forward to working with you! Kari References: - LinkedIn: http://fi.linkedin.com/in/karihirvi - GitHub: https://github.com/karihirvi - Some older material in Google code https://code.google.com/a/eclipselabs.org/p/capua/

    $60.00 /hr
    0 hours
    0.00
  4. Kashif M.

    Kashif M.

    BIRT,GWT, Java, J2EE, JSP, Servlets,XML, JSF,Hibernate,PHP,Mysql

    Pakistan - Last active: 22 days ago - Tests: 2 - Portfolio: 4

    I have more then 8 years experience in Java using GWT, Birt reporting, Struts, J2EE, EJB, Design Patterns, JSP, Servlets, XSL, XML, UML, JDBC, and PL/SQL,JSF and Hibernate,PHP,MysqlHave very strong skills in the design, development, coding and implementation of software with a sharp learning curve that can be used for any new functional area in any position of the project team.Tools: Rational Rose Professional , VSS,Visio 2003,Eclipse3.1,Enterprise Architect,dreamweaverRDBMS: Oracle9i, MS SQL Server 2005 and mysql EDUCATION:Master of Computer Applications. Bachelor of Science.

    $16.67 /hr
    13,324 hours
    4.78
  5. Justin W.

    Justin W.

    Sr-Level Applications Developer

    United States - Last active: 1 month ago - Tests: 10 - Portfolio: 5

    I have over 7 years experience developing web applications with technologies that vary from ASP.Net to PHP and Java and CGI. I'd like to extend my skills with c#. I love learn languages and use them in real world scenarios such as PHP, C# .Net, ASP.Net, C++, C, Java, Net Beans and more. I've a very fast learner and a self starter and I like working myself out of the job. If I please my customers they'll think of me next time they need something.

    Groups: Application Developers Alliance

    $50.00 /hr
    44 hours
    4.42
  6. Arjun K.

    Arjun K.

    Web Applications & MVC Expert

    India - Last active: 1 month ago - Tests: 9 - Portfolio: 15

    I love to program things that work in real world and useful for people in their business. I am professional, reliable and responsible for the work I do. SKILLS SUMMARY:- WEB PROGRAMMING: Web Technologies: PHP Programming Languages/Technologies: PHP, Javascript, AJAX, Mysql, jQuery, JAVA, HTML5, CSS3, PHOTOSHOP C.M.S: Wordpress, Magento, OpenCart, Drupal, PHP Probid Frameworks: Zend Framework, CakePHP, CodeIgniter, YII Looking forward for a positive response from all the viewers. :)

    $16.67 /hr
    910 hours
    4.21
  7. Amitkumar Patel

    Amitkumar Patel

    Java Developer

    India - Last active: 1 month ago - Tests: 6 - Portfolio: 3

    We are a group of professional software developers. We specialize in making quality mobile apps and providing end to end mobile app solutions with strict quality control process for best user experience. we also offer mobile game development and app marketing. We have a strong team of web developers to develop custom softwares and deliver incredible web apps and websites for all platforms. We have great infrastructure and top quality engineers forming a dynamic workforce with great reliability. Our approach is to deliver exceptionally flexible solutions that gives maximum advantage at minimal cost to our customers. Join us to get benefit from our highly experienced and professional IT team with a range full of skills and deep industries expertise with latest technologies like iOS, Android, Blackberry, Java, PHP, Joomla, Magento, Wordpress etc.

    $22.22 /hr
    437 hours
    5.00
  8. Aaron M.

    Aaron M.

    Data Scientist:Machine Learning, Statistics, R, Python, Java, VB/Excel

    United States - Last active: 21 days ago - Tests: 5 - Portfolio: 1

    I work with clients on defining, implementing and managing data analysis and data management projects. My expertise lies at the intersection of Statistics, Computer Science and Business acumen. Specific areas of interest to me are education, healthcare, finance, real estate, and energy. Analysis: R (statistics), Python (data munging), Java+Scala (machine learning / big data), VB.NET/Excel (financial modelling) ** Apache Hadoop, Hive, Spark with MLlib (big data ecosystem) ** MongoDB, Neo4j (NoSQL) + MySQL, Monetdb (SQL) ** Gephi (networks/social graph processing) ** Weka (machine learning) Visualization: Tableau (rapid dashboarding), Shiny (R package for interactive statistical dashboards) Environments: Linux, Windows, and Mac (least experience) Productivity: Git (source code control) Web Applications: Play 2 Framework (modern Java/Scala-based, reactive websites) I believe the key qualification to be a Data Science practitioner is an analytic and curious mindset. That said, many hiring decisions seem to hinge on specific skills. Let me know if there's a tool or technology you don't see on my list, and I'll let you know if I've worked with it before.

    $200.00 /hr
    958 hours
    4.99
  9. Herbert john E.

    Herbert john E.

    Java Programmer/Developer and Mathematics Instructor

    Philippines - Last active: 1 day ago - Tests: 3 - Portfolio: 3

    I am a mathematics teacher for four years teaching basic and advanced mathematics subjects. I had experienced teaching the following subjects (but not only limited to): algebra, advanced algebra, trigonometry, analytic geometry, mathematical finance, complex number analysis, calculus, differential equations, and discrete mathematics. In addition, I also have skill in Java Programming Language, MySQL, Java Server Pages, HTML, and CSS. I had accomplished several programming projects before such as payroll system, billing system, and monitoring system for a University

    $15.00 /hr
    0 hours
    4.60