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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. Lotfi Fetteni

    Lotfi Fetteni

    JAVA/Android Developer, Software QA,Website QA

    Tunisia - Tests: 4 - Portfolio: 10

    Dear Clients, I have a national diploma in computer engineer. I am Java developer with 3 years experience in JAVA, Android, WORDPRESS. Worked with such technologies as JSON, HTML, XML, Oracle Database, MySQL. Over the last 3 years, I have developed a wide range of apps using Java, Android SDK,WORDPRESS, SOAP , XML and JSON. My core competency lies in complete end-end management of a new Android apps development project, and I am seeking opportunities to build apps from the ground up for you or your business. I also have some experience in the following areas: C, OOP, and software design and testing. This variety allowed me to understand the real needs of my clients and to translate it to reality. I'm responsible, creative and hardworking developer and I'm always interested in finding new projects, where I can realize my knowledges. I am looking for challenging projects where I can put into service my skills and contribute to their success. Thank you for reading my profile. Lotfi

    $6.00 /hr
    2 hours
    2.95
  2. Kyle W.

    Kyle W.

    Experienced Corona Mobile Game and App Programmer with Benefits

    United States - Portfolio: 7

    Hello! I'm an experienced and published mobile app and game developer. I've primarily used the Corona SDK for my cross platform game development. I've worked extensively on: * Box2D physics * Many of the Corona plugins (analytics, Facebook, all Ad platforms, etc.) * Cloud services (AppWave and App42, etc.) * Real-time multiplayer * In-app Purchasing * Push notifications * Advertising monetization (video, banner, interstitial, incentive) * Data storage (SQLite, JSON, cloud) Aside from coding, I also do quite a bit of drawing for basic graphic assets. I've done 100% of the assets for each of my games. I wouldn't call my design abilities a core strength rather a supporting ability where I can draw UI controls, basic sprites, etc. without the need for an artist. I'm available full time or as needed starting any time. No preference for team size or project stage. I work well with small or large teams and don't mind jumping into an existing codebase or starting from scratch. As for the **benefits**, I also have an existing codebase for general services that I don't mind reusing (with no licensing attached). Services include: * Complete In-App purchasing store * Real-time multiplayer framework * Push notifications and deep linking * Cloud based promotional services * Progression features including player profiles, leveling, perks and rewards, etc. * Facebook Login integration * Analytics Prior to the recent time I've spent developing games, I worked as a lead engineer in the mobile telecom world for over 12 years as a server side enterprise Java developer and SDK/tools developer. **Portfolio** I have 15 games published on the Google Play store, and 15 on the App Store as well. These games were all solo projects. I've done all design, development, and publishing. Google Play Developer Profile - https://play.google.com/store/apps/developer?id=Mass+Deception+Games iTunes Developer Profile - https://itunes.apple.com/us/artist/kyle-wilgus/id770274910

    $40.00 /hr
    98 hours
    0.00
  3. Samiullah Khan

    Samiullah Khan

    IT Expert | Mobile | Web | Embedded | Avionics Developer

    Pakistan - Tests: 9 - Portfolio: 4

    Sami has years of software development experience in C, C++, Qt, Java, C#, WPF, WCF, .Net remoting, Mono, VB, VB.Net, HTML, CSS, JavaScript, ASP, ASP.Net, SQL and SQL Server. Since 2007 he has developed wide range of high quality and revenue generating software including real time applications, embedded software, web services, n-tire distributed applications, data acquisition software, database development and management, audio broadcast applications, software integrated electronics products and security software.

    $35.00 /hr
    65 hours
    5.00
  4. Oscar Vitela

    Oscar Vitela

    Software & Web Developer

    Mexico - Tests: 2 - Portfolio: 1

    With a degree in system engineering, and with a passion for programming, improving and learning, I work hard to accomplish any kind of goal that is given to me. I work especially with OOP programming (such as java, c#, android, etc.) and web development (html 5, css3, javascript, jquery, php, mysql, codeigniter, wordpress, etc.), but I also make any kind of work suitable with my abilities (even if is necessary to learn a new technology). Besides my degree, I have an Oracle Certified Java Programmer (OCJP). Why hire me? I love to work, and I love challenges, I also love to learn and I will not bill extra for any time I expend learning, Of course I also know which are my boundaries and I will never enter into projects that could be over my head, I also give constantly feedback and results of my work and of course, work with a smile.

    $8.00 /hr
    41 hours
    4.97
  5. Tarun Kumar

    Tarun Kumar

    Asp.net,WPF,WCF,C#, MVC,SQL2008/12,Php,Mysql,html5

    Bangladesh - Tests: 1 - Portfolio: 9

    More than 5 yrs,I have experience about manage the different aspects of project.I have work experience with user satisfactory design of application and website.I work with Software Requirements Specification, Feasibility Analysis, Software Design Plan, User Manual, Testing a web site and development software. Below show my experience area for tools and technology. • Language :: C#3.0,C#4.0,C#5.0, ASP.NET,WCF,WPF, PHP • Framework :: .NET3.5&4.0&4.5,Spring.Net,CodeIgniter, DotNetNuke (DNN), Ajax,Telerik • Others :: ADO.Net, Entity Framwork, LINQ • Design :: JavaScript,Jquery, CSS3, html 5,Bootstrap • Code Architecture :: MVC3,MVC4, N-tire,Multi-tire( DTO,DAL,BLL, UI) • APIs :: PayPal, Google Map, Face Book, Twitter. • Concepts ::OOP,OOA/OOD,ORM, Dependency Injection, Refactoring, WebSoket,SVN,Design patterns, Test Driven Development (TDD),UML, Project management and estimation. • Software :: Visual Studio 2008&2010&2012,Net Beans, • Data Base Server :: MS SQL Server 2005&2008&2012, MySql,MS Access • System :: Windows server 2003 & 2008 & 2012, Windows 7 & 8.

    $7.00 /hr
    11 hours
    4.96
  6. Miguel Palhas

    Miguel Palhas

    Software Developer

    Portugal - Tests: 7

    I'm a Software Developer with a large experience and interest in Linux, Ruby, Javascript, CSS. I'm currently focused on Web Development and Systems Administration, but always with an eye on general programming and scripting, and the open source world. I also have large experience (mostly due to my MSc thesis) in C++, CUDA and High Performance Computing.

    $22.22 /hr
    0 hours
    5.00
  7. Timothy K.

    Timothy K.

    Experienced Engineer and Data Science Expert

    Kenya - Tests: 4 - Portfolio: 3

    I have a passion for software, web and mobile application development and this has given me the required zeal to learn and work with a number of programming languages like C, Java, Visual Basic, Python, Perl, PHP, HTML, CSS, JavaScript. I have three years experience in data science including machine learning (Both supervised and unsupervised learning). I have lots of experience in supervised learning (classification and regression) using KNearest neighbors,Adaboost,random forests,support vector machines,Lasso Methods,ElasticNet methods ,linear and logistic regression. In unsupervised Methods am conversant with K means clustering, Principal component analysis (PCA),ward,Birch and Affinity propagation. Am also very experienced in text learning, recommender systems and anomaly/outlier detection Am a results driven individual who ensures work is completed accurately and in a timely manner as required.I have worked in the service industry where customer experience and satisfaction is key. I can work well with minimum supervision and always ensure that I follow my clients timing and design specifications to ensure total satisfaction to my client.

    $11.11 /hr
    0 hours
    5.00