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.

Browse Java job posts for project examples or post your job on Upwork for free!

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: June 1, 2015
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  1. Alvaro Gomez

    Alvaro Gomez

    Computer vision, Machine learning and pattern recognition expert

    Peru - Last active: 2 days ago - Tests: 5

    M. Sc. in Computer science with a mention in image processing and pattern recognition. Im a Computer vision specialist with over 4 years of hands on experience on a variety of computer vision applications. I have strong background in maths and computer science, research skills in computer vision, senior programmer in C/C++ and Matlab. On the past years i focused on the development of computer vision solutions for real world problems involving extensive research and ground breaking solutions. I have over 3 years experience working with OpenCV and porting image processing solutions to mobile platforms for real time processing. Im very interested in the research and development of a new challenge computer vision tasks including pattern recognition, machine learning and image analysis. I am seeking opportunities to develop and maintain complete computer vision applications, whatever standalone or back-ends for smart websites or light weight solutions for mobile applications.

    $33.33 /hr
    3,735 hours
    4.96
  2. Soorya D.

    Soorya D.

    Selenium/WebDriver/Appium Developer l Web/Mobile API Automation |

    India - Last active: 2 days ago - Tests: 6 - Portfolio: 25

    Last 9+ years, I have been testing and automating applications for Fortune 500 companies. Having 7+ years of work experience in test automation .In that 6+ years on Automating web/mobile app tests using Selenium 2.0(WebDriver) / Selenium 1.0 (RC).Good experience on Mobile automation and integrating tests with CI tools like Jenkins or cloud services like Sauce-labs, BrowserStack. Automation Frameworks development using combination of : - Selenium/WebDriver, Selenium Grid - Appium, Protractor (AngularJS) - Data-driven Selenium tests with external Excel, XML and CSV-based data. - Java / Ruby / Python / PHP - TestNG - ReportNG - JUnit - XMLUnit - Page Object - JBehave - FitNesse - Cucumber - Robot, AutoIt & Sikuli - Jenkins (including integrating with SVN/ Perforce/GitHub/ Saucelabs.) - Maven/ANT - Flex automation agents like Flexmonkium, FlexPilot, SeleniumFlex API * RestFul Web service testing using SoapUI * Performance testing Using JMeter/ SoapUI * Automating websites that involves Map(like Google Maps) interactions I have strong experience in testing various types of software ranging from desktop applications to web applications. Types of testing that I have done include: =============================== - Black Box and White Box Testing - Manual and Automation testing - Smoke testing - Functionality testing - Integration testing - Cosmetic error testing - GUI Testing - Cross browser compatibility testing - Regression testing - User Acceptance Testing - Mobile app testing - Games testing - Performance testing "Passion for Test Automation", "Good Communication", "Think from a customer perspective", "Good error guessing skills", "Analytical and logical thinking", A strong desire for quality" and "An attention to detail" are the qualities of a best Software Test Engineer. So if you are searching for a person with above qualities and abilities.I can ensure you that I best fit in to your mission.

    $35.00 /hr
    606 hours
    4.99
  3. Stephen Brown

    Stephen Brown

    B. Sc. (Honours), Veteran Web Developer in C#.NET

    Canada - Last active: 13 days ago - Tests: 2

    I have had a love for programming since a very young age. I have now been programming seriously for 12 years. I graduated Memorial University of Newfoundland in 2007 with a B. Sc.(Honours) in Computer Science. I have worked a lot recently in web development in C# but also have experience with databases and scripting. Here are a few of my skills Web Programming - C#.NET, VB.NET, WET 4, HTML, CSS, JavaScript, TFS Programming - Java, C#, VB, Python Scripting - Python

    $44.44 /hr
    54 hours
    5.00
  4. David Pavel

    David Pavel

    .NET / Oracle / Java / HTML / CSS

    United States - Last active: 18 days ago - Tests: 1

    Objective: To work as a software engineer for your custom project, mobile app, or website. Whether it is an entirely new project or stabilizing an existing application. Why choose me: I have more than 5 years of professional experience in the financial and industrial sectors utilizing best business practices for user interface design, application maintenance, and new large, corporate, enterprise applications. I am responsible, highly resourceful, detail-oriented, reliable, goal-oriented, relentless, self-motivated, open-minded, and willing to learn.

    $40.00 /hr
    0 hours
    5.00
  5. Neil H.

    Neil H.

    Systems Administrator / Developer

    United States - Last active: 2 months ago - Tests: 9 - Portfolio: 1

    I am a Systems Administrator / Developer, available for freelance work on a per diem basis, or for a more long-term project/job. I am fluent in PHP, Python, and Bash, and have a knowledge of Java, C++, and have touched a few other languages.. I have a strong command of Linux/Bash, as well as Administration of both Windows and Linux servers (Specifically cPanel/WHM servers and CloudLinux) on a LAMP stack.

    $90.00 /hr
    0 hours
    5.00
  6. Ravi shankar S.

    Ravi shankar S. Agency Contractor

    1st Rank, Salesfroce Certified Developers with 7+ yrs experience

    India - Last active: 2 days ago - Tests: 3 - Portfolio: 1

    Over the last 7+ years, I have developed a wide range of applications on force.com platform. During this period I worked with each and every component of the Salesforce. I have provided exceptional quality work to customers. Here is a list of some of the work done by me and these apps are rated as very good on AppExchange: http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003J6KcEAK http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003IleFEAS http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003J4NhEAK http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003J4NhEAK http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003J4NmEAK http://appexchange.salesforce.com/listingDetail?listingId=a0N300000030ptZEAQ http://appexchange.salesforce.com/listingDetail?listingId=a0N30000001tc1DEAQ http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003Ilf6EAC http://appexchange.salesforce.com/listingDetail?listingId=a0N30000003J2fBEAS I am also having awesome experience on Data Migration, Integration, Web-services, Migration tools etc.

    Groups: salesforce.com

    Associated with: Simplyforce Technology Agency

    $40.00 /hr
    14,833 hours
    4.99
  7. Daniel Vieira

    Daniel Vieira Agency Contractor

    Software Developer

    Brazil - Last active: 7 days ago - Tests: 3 - Portfolio: 1

    I've been working over the last few years with technologies such as Google Dart,Polymer,HTML5,CSS3,Java,PHP,Javascript,D language,Objective-C,iOS,Android,C#,C,C++ and Delphi. I have developed web projects (frontend and/or backend), as well as mobile and desktop software. This year I'm back to college to finish my Computer Engineering course which I once stop due to family matters at the time.

    Associated with: Fable Factory

    $40.00 /hr
    581 hours
    4.96
  8. Josh M.

    Josh M.

    SQA/Testing/Security/Networks/Development/Technical Writing(Canada)

    Canada - Last active: 4 months ago - Tests: 9

    Over my career I have been handed a great many challenges and I have throughly enjoyed finding solutions for my clients problems. I have not limited myself specifically to one area but many, and have enjoy a diverse technical career. I am a skilled, hard working, dedicated IT professional with over 10 years of experience. I have development experince in numerous languages and specialize in PHP/MySql web development and Linux/Windows scripts and applications. I have excellent communication skills and am available at your need.

    Groups: Bluehost Developers and Designers

    $55.00 /hr
    8,385 hours
    4.98
  9. Jonathan B.

    Jonathan B.

    Digital Design Line Custom Programming Services

    United States - Last active: 3 months ago - Tests: 2

    I write custom code in C, C#, Java, Visual Basic, PHP, Python, and even a little Ruby and Perl. I have worked as a network and systems administrator for 10 years, and I love to automate processes and even write custom scripts. I have a Bachelor's Degree from Florida Institute of Technology in Computer Information Systems.

    Groups: Application Developers Alliance

    $33.33 /hr
    290 hours
    5.00
  10. Mudit D.

    Mudit D.

    Expert Php,mysql Developer and Web Designer

    India - Last active: 1 day ago - Tests: 7 - Portfolio: 9

    I am an experienced web designer & developer.i have done many projects on website development not only on odesk but outside it.i am also good at code correction and database management.perfection and doing work in deadline is my sole motto . THANK YOU.

    $33.33 /hr
    220 hours
    4.96