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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. Anu Venkat

    Java,Voicexml,ilog,webservices,jsp,avaya dd,speech server,sip,avp,aic

    India - Tests: 1

    Capable to do any kind of development in Java,jsp ,servlets,IVR implementation using voicexml,avaya dialog designer ,speech server,CTI Integration, IC Programming

    $27.78 /hr
    0 hours
    0.00
  2. Veselin K.

    Veselin K.

    Software Engineer - JavaScript / CSS, Java / C++, PHP, MySQL

    Bulgaria - Tests: 7 - Portfolio: 8

    Over the last years I was involved in developing a wide range of web applications. I prefer to concentrate on providing a nice web 2.0 user experience by developing sophisticated JavaScript front-end. Nevertheless I'm good at developing a full website solution on top of LAMP stack. Before going to web I have gathered extensive experience developing desktop applications in Java or C++

    $40.00 /hr
    9,185 hours
    5.00
  3. Liudas Bielskis

    Liudas Bielskis

    Flash, ActionScript, Adobe AIR, Unity, Html5, Javascript , Java.

    Lithuania - Tests: 11

    I can code Flash, Adobe AIR, html5/javascript, Webgl games. I can do flash, html5, jquery, css3 animations. I can edit,write,extend, re skin Unity 3d projects. I can edit,write,extend code in Java. I can use Unity 3d . I work with Android studio for java projects .(I use java mainly for android ). Actionscript 3 libraries I can use : Starling, Away3d, Nape, Box2d, GreenSock, Adobe AIR sdk, Facebook as3 SDK.. Javascript libraries I can use : CreateJS, Google Swiffy, Pixi, Phaser, GreenSock, Jquery, ThreeJs.

    $19.99 /hr
    139 hours
    4.96
  4. Victor V.

    Victor V.

    Java/J2EE/ SQL / Software Architect/ Sencha Extjs Developer/ AngularJs

    Russia - Tests: 5 - Portfolio: 2

    Java, J2EE, Spring (MVC/Security/Rest), JSF, Hibernate, Hibernate Search(Lucene), JSP, JSTL, Apache Tomcat ✔ MySQL, Oracle, PostgreSQL ✔ Javascript - (AngularJS, doT.js, Sencha(Extjs 4.x), jQuery) ✔ HTML5, CSS3 ✔ SVN, GIT I'm an experienced Java programmer with solid principles in programming, architecture and code quality. Working in web development for over 7 years I gained considerable experience in building business solutions using such languages as Java, Javascript(AngularJS, ExtJs, JQuery), SQL, Bash-scripting, HTML5, CSS3. Over the last four years I have been working for such companies as "Firejack Technologies", "Bank of America", "Millenial Media" etc, so i gained considerable experience in the designing of web applications architecture. I like to learn new technologies, frameworks etc, so research projects will be also interested for me.

    $35.00 /hr
    6,177 hours
    5.00
  5. Ruslan B.

    Ruslan B.

    Server-side (backend) developer: Java, Groovy, Grails, Spring

    Russia - Tests: 2 - Portfolio: 4

    I have 15 years of experience in software development, 10 years of Java experience. I worked in many areas, for both local and international companies. I have got a full-time job, but I'm interested in getting a few more freedom for myself while getting new exciting tasks to do. My primary programming platform is Java+Groovy (and Grails). I am experienced with Grails guts as well (Spring, Hibernate). I am familiar with Quartz and Atmosphere. I also worked with some assembly language, basic (and vb), pascal (and delphi), C++, C#, ActionScript 3, Objective C, Perl and PHP. I have some basic knowledge of lua, tcl, python (I can modify/fix existing code). But these are secondary tools, my primary language and area of interest are Java and Groovy. I know the NoSQL and map-reduce principles, and worked with MongoDB and Cassandra as well as traditional relational databases (MySQL, PostgreSQL, Firebird). I was working in a teams (though maximum was 5 developers only) so I'm familiar with the bug-trackers, version control systems (svn, git, perforce, and even cvs), I love maven and gradle, also love the continous integration tools like Jenkins and Teamcity. As you might guess, I am a fast learner. I like to do complicated tasks. Unlike many other developers, I like to deal with code written by others. I like to debug and profile it, to refactor etc. I'm not fanatic of code improvement (if it works it's good enough), but when I see the portion of code which is hard to understand or which can cause bottlenecks or which is dangerous - I'll fix it :). Together with software development, I like some minor reverse-engineering. I was used to do some work with IDA, and ofcourse with JAD (and now with JD). I used some ActionScript decompiling tools when dealing with AS3 project. Also I know about web application protection. I always escape user input, filtering unnecessary stuff when needed. I won't do chmod 777 anything at your server as well. I'm a very cross-platform guy. I use linux, mac os and windows and I know how to launch your java app on these platforms natively. I don't hesitate to ask the questions when I'm unsure about the task. I believe it's better to seem stupid than waste my time and produce the bad implementation. I always do my best to meet the deadline. I'm not looking for a single job for a few hours only (although I like this kind of jobs), I'm looking forward to "win - win" relation, where you can be sure I meet your conditions and I can be sure you'll provide me with some interesting tasks, promt payments and clear directions. You're more than welcome to contact me and ask any questions about my background or experience. I'm available for voice communication too, evening time only (starting from 15:00 GMT or 7am PST). If we work long-term you'll have more contact options. I'm available on Skype, Jabber, Viber. Last but not least: I've got 2 broadband connections at home, and I'm always online on my phone, so I won't get lost.

    $27.78 /hr
    508 hours
    5.00
  6. Shivam Semwal

    Shivam Semwal

    Web Scraping Expert, Web Automation, Data Mining, Java Desktop Apps

    India - Tests: 11 - Portfolio: 3

    * Cheapest, fastest bulk scraping starting at $3/hr, upto 200k pages per day. * Top rated web scraper on upwork. * Contact me for long term automated web scraping tasks * Web automation, Bots Development, Selenium, Imacro * Data mining, processing, filtering, conversion * Multi-threaded web automation using multiple IPs, proxies, VPNs, captcha solvers * Cross Platform Desktop Apps development

    $10.00 /hr
    1,245 hours
    4.87
  7. Alex T.

    Alex T.

    PHP, HTML, iOS, Android, ASP.NET, SQL, C#, JAVA

    Ukraine - Portfolio: 14

    Every valuable thing in our world of contrasts has it's own price. Something more, something less.. On what depends your everyday choice? No matter in what - clothes, foodstuffs, real estate, car or any of available services. If your answer is price then I guess you have a wrong way my friend. In software development services, when relying just on price, I'm sure, one day, you will find out or unfortunately already found yourself in a situation where: You've got a mediocre product which has not essential value on the market ...or... in better case...the people you've worked with have lacked commitment to your project and as soon as you finished a release they bailed on you ..or worse than that..they leaved you on a half of way. Don't think that possible trouble's on this list ends. Lack of innovativeness or dedication makes you fail with start-up even without understanding the main reason

    $25.00 /hr
    8,421 hours
    4.96
  8. Matthew C.

    Matthew C.

    Ruby/Python/Javascript/Java - Developer/DevOps/Automation Engineer

    United States - Tests: 4

    Automation/Scripting/DevOps/Data Analysis I have extensive experience with building and deploying CI/build systems, test frameworks and deployment/backup systems. I love writing utility scripts and DevOps code. I also write screen scrapers, crawlers and data parsing/analysis tools. I offer all types of testing services: usability, load, API, UI Automation, etc. I can also implement new features for your web application or fix bugs in it. Some of the tools of my trade: Python, Ruby, Javascript, Jenkins, REST APIs, Rails, Sinatra, Flask, bash, Java, Jenkins, Watir, Selenium, Puppet, Chef, Docker and more. I'm more than willing to learn on the job too. Furthermore, if I build a tool for you, I will document it and work with you so that you can maintain it going forward, if that is your goal. I can also tutor you if you're just getting started with programming or a specific tool/language. I offer technical consulting as well, consider me a sounding board for any decisions related to development, testing, deployment and design.

    $45.00 /hr
    174 hours
    5.00
  9. Walter P.

    Walter P.

    Sr. JAVA ANDROID WEB ORACLE PHP C C++

    Argentina - Tests: 1 - Portfolio: 33

    I have a lot of experience designing and developing solution including databases and clients (web, windows and mobile). Developed web sites in JAVA and PHP using (or not) JavaScript, HTML, jQuery. Developed Android applications hybrids and natives. Hybrid applications using jQuery Mobiel jQuery, plain JavaScript and HTML5 and CSS3. Native applications in JAVA- I was part of a lot of projects with complx integrations using and exposing REST WebServices, SOAP WebServices, JMS, MSMQ, IBM MQ and batch transfers using ftp, sftp, Control M and so.

    $20.00 /hr
    201 hours
    4.97
  10. Amrit J.

    Amrit J.

    AWS Architect/DevOps/Docker/Java/Jenkins/Andoid/iOS TOP EXPERT

    Canada - Tests: 5 - Portfolio: 4

    AWS Solutions Architect, Startups Consulting, Senior DevOps, Java/J2EE/ITIL certified professional with 10+ years of Software Configuration Management working experience with large scale companies (15,000+ employees) and specializes in - • AWS, EC2, S3, Docker, Jenkins, Fabric, MongoDB, LAMP, MEAN, iOS, Android, Java, J2EE, C++, PHP, Python, Perl, JSP, .NET, SOA, Maven, Nexus, Ant, XML, SQL, Make,, HTML, CSS, AJAX, DB2, Oracle, MS SQL, MySQL, Wordpress, WebSphere, Tomcat, IIS, Web logic, GIT, Gerrit, Subversion, Perforce, Electric Commander, Jenkins Enterprise, Travis CI, StarTeam, CVS, Puppet, Chef, Ansible, Salt, Grunt, Node.js, Cordova, Android, iOS and lot of other environments. • SEO/SMM/PrestaShop/Wordpress/On Page/Off Page/Google Adwords/Facebook Ads expert • Experienced in agile methodologies like Scrum/Kanban, SOA based architectures, frameworks, process re-engineering, reusable best practices, continuous integration and training. • Experienced in providing direction and governance in the design, planning and implementation of standards, processes, best-practices, policies and methods for various complex projects. Detailed technical knowledge and experience of software development processes, tools and best practices • Sun Certified Java Programmer 1.4 Certification. • Sun Certified Web Component Developer 1.4 Certification. • ITIL v3 Foundation Certificate.

    $49.99 /hr
    181 hours
    5.00