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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, 575 Java projects are completed every quarter on Upwork.

575

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: July 1, 2015
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  1. Mariya Volzheva

    Mariya Volzheva

    DB dev(Oracle,MSSQL,MySQL) + Java/JSP/PHP/CSS

    Ukraine - Last active: 19 days ago - Tests: 5 - Portfolio: 2

    I prefer to work in the field of database development: Oracle, MSSQL, MySQL, Postgres, that includes database design, optimization, migration and integration. Besides I gained experience in developing software: web-portals (Java / JSP / Java Servlets, PHP, HTML, CSS, java script), C# applications (web services mostly), Java apps. I'm looking forward for opportunities to improve existing skills and to learn new technologies.

    $20.00 /hr
    884 hours
    4.89
  2. Muhammad bilal H.

    Muhammad bilal H.

    Certified Message Broke / MQ / J2EE / SOA Integration Developer

    Pakistan - Last active: 2 days ago - Tests: 2 - Portfolio: 1

    Certified Websphere Message Broker, MQ, JAVA, JEE Consultant with have around 8 years of hands on Middleware Integration Desing and development experience. Excellent working knowledge of designing and developing high performance middleware integration services using different integration technologies; i.e. IBM Websphere Message Broker v7, v8, IBM Integration Bus v9, Message Queue (MQ), Business Process Manager, Business Monitor, Web Services etc. in SOA environment, Expertise: IBM WebSphere Message Broker v7 and v8, IBM Integration Bus (V9), IBM WebSphere MQ 7.0 and MQ 7.5, Business Process Manager, Business Monitor, Servlet, JSP Struts1.x, Struts2, Spring, Hibernate, Web Services, JSTL, XML, Tomcat, MySQL, IBM informix, IBM DB2, Postgres SQL,JBoss Seam, Excellent UI development skills using HTML, CSS Java Script Jquery, YUI, XHTM, I believe in top quality work. and I am here to provide top quality services to my clients.

    Groups: Oracle Certified Professionals

    $28.00 /hr
    825 hours
    4.87
  3. Vivek Viswanathan

    Vivek Viswanathan

    Expert Web App Developer & Manager

    India - Last active: 11 days ago - Tests: 6 - Portfolio: 3

    Over the last 8 years, I have developed a wide range of scalable & responsive websites on the cloud. My core competency lies in complete end-to-end management of the Project, and I am seeking opportunities to build websites from the ground up for you and your business. As part of my experience, I've worked for different companies and for various projects, from small startups to large corporations, from small device-oriented applications to multi-layer, cross-platform software. With a strong background in Agile development methodologies, I've worked with remote teams and clients from all over the world. I'm fluent in using the below programming languages/frameworks: Front-end: HMTL5, Flex, jQuery, jQuery-Mobile, BootStrap, Foundation, Canvas Libraries Back-end: Java, Spring, Struts, iBatis, BlazeDS, Php, Magento Mobile App: Phonegap Database: MySQL & MS-SQL Scripting: Perl, VB Script Other Expertise: Optimizing SQL query & web pages for performance, VB Macro I enjoy new challenges, looking to overcome my own high standard goals.

    $30.00 /hr
    911 hours
    5.00
  4. Juan Carlos Contreras Ontiveros

    Juan Carlos Contreras Ontiveros

    Web Development & Software Development

    Venezuela - Last active: 26 days ago - Tests: 5

    I have developed a certain amount of websites using HMTL, PHP, AJAX, PostgresSQL, MySQL, Joomla and Engine Templates like "TinyButStrong". Plus, I have been developing among my jobs, diferent king of desktop software, in c++, java, batch. I also have good experience in SQL database management, software design and testing.

    $11.11 /hr
    239 hours
    5.00
  5. Flavius Iftode

    Flavius Iftode

    Software Engineer with big data experience

    Romania - Last active: 2 days ago

    I'm a software engineer, tester, DevOps, Linux/Windows/Mac administrator, Cloud Security & Provisioning expert. As a developer, my ability to write code in multiple languages (Java, Scala, python, C++, C#) allowed me to be assigned to critical core components of internal software platform for my current company. As DevOps Engineer I build the entire deployment and cloud provisioning story, which requires comprehensive and deep knowledge of an entire software platform with all the modules and components that needs to be packaged, the open source components (Hadoop, Spark, Mesos, Tachyon, Cassandra, Zookeeper, Rabbit, nginx, PostgreSql etc) as well as the company internal components built on top of them. I've become expert in configuring and performance tuning all these systems for optimal results.I'm the go-to person when it comes to configuring the target OS for deployment and development environments (Ubuntu, RedHat, MacOS, Windows), VPC, EC2

    $27.78 /hr
    263 hours
    4.45
  6. Denis Kuzmenok

    Denis Kuzmenok

    Perl Developer

    Ukraine - Last active: 1 month ago - Tests: 8 - Portfolio: 2

    Experienced in building e-commerce projects (online shops, price comparison systems). Latest projects: 1) Online shops, all backend, frontend programming. Used technologies: Perl, mod_perl, FCGI, TT, HTML::Template, memcached, MySQL, etc. 2) Price comparison system ava.ua (pricegrabber.com/shopping.com close analog). All backend, frontend programming, database administration. Used technologies: Perl, mod_perl, PLP Plack/PSGI, FCGI, HTML::CTPP2, etc. Mysql (Partitioning, Replication, Triggers, Procedures, Queries optimization).

    $22.22 /hr
    1,491 hours
    5.00
  7. Mykola Velykyi

    Mykola Velykyi

    Java Desktop Developer

    Ukraine - Last active: 3 days ago - Tests: 7

    Over the last 1 year, I have developed one project based on web server using HTML, SQL, CSS, javascript in my work. Over the last 4 years, I have developed many desktop programs using Java, C#, Python, C++ and programm style OOP in my study. When I create the application, my work consists of 4 stages: design, code, test and write documentation. I also have some experience in using XML. I am good in Mathematics. Mathematics is my hobby. I participated in mathematics competitions in many years and I took the leading places. I know and understand different algorithms. Also, I have a mathematical mind. I know parallel programming.

    $10.00 /hr
    15 hours
    4.97
  8. John Comeau

    John Comeau

    expert troubleshooter, generalist developer, tenacious problem solver

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

    "Jack of all trades, master of none" is typically said in a derogatory fashion, but I adopt the title gladly, and you will not likely find more than a few dozen generalists worldwide who can match my troubleshooting and problem-solving skills. I've been programming, on and off, for 40 years, if you count my study of BASIC in 1968, 6 years before I actually got my hands on a computer: the DECSystem-10 at Worcester Polytechnic Institute. As a result of working on computers and microcontrollers of various sizes and capabilities over the years, I have learned to get to the basics of a problem, come up with a prototype solution, and refine it to the customer's satisfaction. My methodology, which I found later is used by many successful programmers, is "build one to throw away"... once the code is working, rewrite it from scratch, correcting the false assumptions made in the first attempt, and refactoring to make a clean, maintainable, codebase. My background in both the electrical/electronics side of things plus years of experience reverse-engineering and improving software on dozens of different architectures gives me the rounded background necessary to take on projects which leave specialists lost. I may charge more than most ($100 is my usual rate, but I found it's unrealistic on Odesk), but when you've run up against a brick wall, I can likely find a way over, around, or through it.

    $100.00 /hr
    87 hours
    5.00
  9. Simon Weingand

    Simon Weingand

    Senior iOS and Android and Back-end Developer

    Germany - Last active: 1 day 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
    1,363 hours
    5.00
  10. Manan Jani

    Manan Jani

    9 Years Exp. Hybris/AEM/MongoDB/Java/E-commerce specialist

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

    I'm an experienced Java developer having 9 years of experience. I have worked on many large scale e-commerce systems throughout my career. I have vast experience working on Java EE frameworks. I have experience in following technologies... - Hybris - AEM/CQ - Endeca - Fredhopper - MongoDB - MySQL - Oracle I'm also linux savvy and have in depth devops knowledge. I also have following certifications... - Sun Certified Java Programmer - Sun Certified Web Component Developer - Sun Certified Business Component Developer - Hybris Certified Core Developer - MongoDB certified Java Developer - MongoDB Certified DBA - MongoDB Certified Advanced Deployment and Operations Person

    $22.22 /hr
    1,042 hours
    4.94