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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, 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. Leo J.

    Leo J.

    Engineer in Computer Science - Developer - Research

    France - Last active: 20 hours ago - Tests: 15 - Portfolio: 1

    Hello, I am a 27 years old engineer in Computer Science from France. After graduating from the Institut National des Sciences Appliquées of Rennes, I moved over to Sweden to follow a master program on Mobile Systems. Meanwhile, I was also working as a freelance web-developer/project co-leader for a Canadian company. While learning, I participated as a trainee to many professional project and learn to be flexible both in my ways of working in a team and on the technologies to use. Indeed, even so my major programming languages are Java and PHP, I could easily learn C# during my master thesis in Sweden and build up a nice piece of software to work with Sifteo cubes. Software architecture and system design are two of my strong background points, thus I thrive in realizing project from the beginning until the end. My professional experiences involved many non programmer and non computer scientist customers and allowed me to train establishing their needs and to translate them into sprints, backlog and deadlines. I also believe that knowledge in computer science without knowledge of the real world are wasted hence my interests for books, sail, roller-skating, ice hockey as well as environmental questions for instance. Looking forward to working with you.

    Groups: Application Developers Alliance

    $33.00 /hr
    433 hours
    4.96
  2. Dejan S.

    Dejan S.

    Joomla extensions developer

    Serbia - Last active: 20 hours ago - Tests: 2 - Portfolio: 6

    Hello , I'm PHP programmer specialized in Joomla extension development. If you need a custom Joomla component to support your business or you building a website for your client and you need a real Joomla expert to help you , I'm the right guy for you. I have created many custom Joomla components that power very successful businesses such as Camp Beaumont and worked in a team of programmers that produced AnswerCrowd - first Australian market research online platform. I'm very professional , meet deadlines , write clean , modern, well designed and robust code. Contact me , and be some of the successful businesses in my portfolio !

    $55.00 /hr
    4,362 hours
    4.93
  3. Mark joseph V.

    Mark joseph V.

    Consultation: E-commerce with INFUSIONSOFT | PHP, WORDPRESS | API

    Philippines - Last active: 20 days ago - Tests: 13 - Portfolio: 11

    Starting an online small business? Are you using Infusionsoft or OfficeAutopilot and use the popular Wordpress? I'm here for you to give some consultations and advices for your company's technical aspect. I can help you in infusionsoft - frontend and backend and if it seems impossible to you, we can use PHP and API to make customized programs for your needs. See my services here: http://infusedmj.com

    Groups: Bluehost Developers and Designers

    $59.99 /hr
    5,014 hours
    4.92
  4. Simon Weingand

    Simon Weingand

    Senior iOS and Android and Back-end Developer

    Germany - Last active: 2 days ago - Tests: 16 - Portfolio: 2

    Thanks for reviewing my profile As a creative and passionate professional programmer with 10+ years of experience. Major skills: - iOS, Android, Phonegap/Cordova(jQueryMobile, SenchaTouch, Ionic) - Objective-C, Swift, C/C++, Java, - PHP/MySql, Ruby on Rails, AngularJS, Node.js, Javascript, HTML, CSS, jQuery - Parse.com, Amazon, Heroku, MongoDB, RESTful API, AJAX, JSON/XML, RSS - Facebook, Twitter, Instagram, Google+, VK, Foursquare - Paypal, Stripe, In-app purchase - Google App Engine, Google Map Api, Google Drive, GPS, BLE, NFC, iBeacon, VOIP - Git, Bitbucket, Testflight

    $55.56 /hr
    1,138 hours
    5.00
  5. David B.

    David B.

    Senior Mobile App (iOS/Android) & Server Back-end Developer

    Netherlands - Last active: 1 day ago - Tests: 17 - Portfolio: 16

    *** Your Journey into Native Mobile App Development (iOS/Android) starts with me *** Full-Stack Native Mobile Apps & Web Services Expert Full Time support(40~60 hrs/week), Daily progress report & Skype live chat Long-term relationship contract & Money-back guarantee *** iOS/Android Application Development *** - iOS Native (XCode): Objective-C, Swift, Cocoa Touch, iOS7 & iOS8 Kitkat - Android Native (Studio/Eclipse): Java - Hybrid Apps: Phonegap by Ionic (Angular JS), Cordova SDKs, JQM, Kendo UI - Xamarin (.NET) - Mobile Games: Cocos2D, Cocos2DX, Unity3D, Board SDK *** Mobile Application Services Support *** - Analytics and Testing : Google Analytics, Apptentive, Flurry, KIF testing framework - Back-End: JSON-RESTful APIs built on PHP MVC Frameworks for CRUD as well as 3rd Party SDK integration like Parse, Twillio - Services: Cloud, iBeacon, FB, Twitter, LinkedIn, Twitter, Google, Audio/Video (Wowza) Streaming *** Web Services Support *** - Main Tools: PHP, MYSQL, HTML5, DHTML, JQuery, CSS3 (Bootstrap & Responsive & Parallax) - JS Templates: AngularJS(Ionic), BackboneJS, NodeJS(XMPP), RequireJS - Common Templates: WP, Joomla and PHP MVC frameworks : CodeIgniter, Laravel, CakePHP, Yii and Kohana - Ecommerce: Magento, OpenCart, WooCommerce, Shopify and Prestashop I work as individual, supporting full time. I'm here to analyze your ideas and requirements and offer our vision of project realization. Rough quote will be ready within 48h. If it is acceptable for you, I'll prepare detailed project development plan indicating timeline and budget. I always make sure to bring you upon successive results of highly and creatively qualified results before your deadline and guarantees refunding for any unsuccessful results or issues which are responsible for me. I am seeking an opportunity to become a business partner with long-term relationship forever.

    Groups: Application Developers Alliance

    $77.78 /hr
    599 hours
    5.00
  6. Pavel Ismailov

    Pavel Ismailov

    4+yr Android / Client-server apps / Games / SQLite / JSON / API

    Russia - Last active: 20 hours ago - Tests: 2 - Portfolio: 3

    My goal is bring your idea to reality. 4 years experience in Android allows me work at high quality projects. I like to keep a close contact with you and inform you about the progress during all the project. My linkedin profile: http://linkedin.com/in/ismailov ---- APPS ---- - Twitch IRC chat - https://play.google.com/store/apps/details?id=org.tchat - Very Hard Game: Home - https://very-hard-game.com - Taxi app - https://play.google.com/store/apps/details?id=com.taxsee.taxsee - Pextr - https://play.google.com/store/apps/details?id=com.pextr.app - Other - https://very-hard-game.com/apps.html ---- DEVICES PARK ---- All devices from that list are REAL devices which I can use to test your app. - Samsung --- Galaxy Note 2014 Edition --- Galaxy Note 3 SM-N900 --- Galaxy Note 16Gb --- Google Nexus --- Galaxy S4 16Gb --- ATIV Smart PC --- ATIV Smart PC Pro --- Galalxy Tab III 16Gb 3G 10.1 --- Galaxy Tab III 8Gb 3G 7 --- Galaxy Tab III 16Gb 3G 8 --- Galaxy Tab II 16Gb 3G 10.1 ---- EXPERIENCE ---- My experience: - ANDROID SDK 2.3-5.0 --- UI/UX --- games --- client-server --- rest APIs --- SQLite --- JSON --- dynamically loading --- fragments --- camera recording --- audio recording --- canvas drawing --- multithreading --- sensors - REST APIS --- Facebook --- Twitter --- Vkontakte --- Parse --- Admob --- Flurry --- Leadbolt --- Google - JAVA --- OOP --- clean code --- MVC - GAMES ENGINE --- Andengine 2d games --- I am fanatic of Android OS and spend all my time on it! My main desire - do the job quickly, accurately and in a given time terms. Pleas check my open source apps https://github.com/pavel-ismailov http://very-hard-game.com/apps.html tel: +7-923-125-4461 skype: pavel.ismailov mail: pavel.ismailov@gmail.com linkedin: http://linkedin.com/in/ismailov github: https://github.com/pavel-ismailov facebook: https://www.facebook.com/pavel.ismailov.9

    Groups: Application Developers Alliance

    $33.00 /hr
    1,247 hours
    5.00
  7. Mercy McCulloch

    Mercy McCulloch

    Artist and Graphic Designer with Programming Experience

    United States - Last active: 20 hours ago - Tests: 4 - Portfolio: 13

    I am a graphic designer and artist. I love making brochures, game assets, web designs, cd covers, you name it. I have 3D and 2D knowledge and NEVER use templates. I have been freelancing graphic design and art for over 6 years now. I also have extensive knowledge in Unity 3d, php, java, java script, perl, c#, html, flash and more. Communication is very important to me, one of the reasons why I majored in Cross Cultural Studies, Mass Communication and know a few languages. I have clients in India, Australia, Russia, UK, America and Mexico which has helped me maintain my languages I've learned.

    $40.00 /hr
    15 hours
    5.00
  8. Nahid Hossain

    Nahid Hossain

    Web & Enterprise Application Developer (PHP, C#, Java,MySql,MSSql)

    Bangladesh - Last active: 20 hours ago - Tests: 10 - Portfolio: 2

    Over the last 6 years, I have developed a wide range of web applications and enterprise applications using PHP, C#, Java, mysql and mssql. I have worked with all major PHP frameworks(Yii, Yii2, Zend, Symfony, Codeigniter and laravel), CMS(wordpress, joomla etc) and e-commerce platform(opencart, magento etc). I have worked as a software development consultant for several organization. My primary strength is to work with any unknown system very easily and faster debugging. My Website: http://www.akmnahid.com

    Groups: Bluehost Developers and Designers

    $35.56 /hr
    363 hours
    4.97
  9. Nathaniel S.

    Nathaniel S.

    Senior Software Developer

    Canada - Last active: 20 days ago - Tests: 2 - Portfolio: 4

    I have extensive experience developing enterprise-grade network-based web applications and desktop software for clients in government, health care, finance, and academia. I'm the lead developer on several web-based and game engine products, some open-source. I'm strongly familiar with major proprietary and open source development tools and libraries. I'm both an experienced team leader and a fast and reliable solo developer, and as an entrepreneur I understand how to balance high-quality work with the need to ship. I have an academic background with training in both statistics and research methodologies, so I particularly enjoy working on challenging projects that require analysis and creative problem-solving, and which aren't simply clones of existing software. I look forward to working with you!

    $80.00 /hr
    0 hours
    5.00
  10. Kurt Waldowski

    Kurt Waldowski

    Programmer, Designer, and Artist || kwaldo.com

    United States - Last active: 7 days ago - Tests: 2 - Portfolio: 3

    Kurt Waldowski is a multi-talented developer that has been creating games, web sites, and web applications for over 5 years. Programmer, designer, and artist, Kurt has taken part in every end of the development process. He is currently attending the University of Michigan to earn his degree in Computer Science. Kurt only bids on projects he is genuinely passionate about, and as a result, he guarantees satisfaction. He often bids with longer time constraints in order to account for potential reiteration. This assures that your vision is brought to life the way it was envisioned.

    $45.00 /hr
    0 hours
    5.00