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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. Daniel Krstevski

    Daniel Krstevski

    Senior Android Software Developer

    Macedonia - Last active: 1 month ago - Tests: 4 - Portfolio: 2

    Currently taking master's in Electrical Engineering & IT. Having 3+ years of android under my belt, feeling confident building professional looking apps, with responsive UI's using the latest technologies. Although my main focus and work is Android Development, I also have knowledge of other programming languages like: Java, C/C++, JavaScript, BashScripting. Application overview and technologies used: - Native application developed using the Android SDK. - Google Maps Android API v2 - Android Geolocation API's - Compatible all the way back to Android 2.2. - Fragments with the Android support package. - Using support libraries, and optimizing for wide range of screens. - Background processing and networking. - Well known open source libraries used. - Interaction with external internet resources via HTTP. JSON / XML parsing. - Android's Multimedia Framework. - GIT Why choose me ? Having the ability to adapt to your need (literally), researching, communicating fast and effectively, focusing entirely on android development so results can be better than expected. Thank you for visiting my profile, and make sure you have nice day. Best regards, Daniel.

    $18.50 /hr
    0 hours
    5.00
  2. Ahsan A.

    Ahsan A. Agency Contractor

    Software Engg

    Pakistan - Last active: 14 days ago - Tests: 2 - Portfolio: 1

    - Web Application Developer, Database Administrator, and Software Project Manager in a wide variety of business applications. Particularly interested in client/server and relational database design using My SQL and MS-SQL Server. - Managing and configuring data replication Servers Using MySQL Server - Network Manager with hands on experience of managing 150 node Network and managing and configuring network equipment including exchange server and Active Directory configuration - Implementing Network security using ISA Server and various opensource tools including astro , Microtik. - Configuring ,customization and managing Pridictive Dialers like Goautodial,elastix etc

    Groups: LoginRadius

    Associated with: techaced

    $33.33 /hr
    446 hours
    4.76
  3. Alexander L.

    Alexander L.

    Java J2ee Master

    Ukraine - Last active: 11/27/2014 - Tests: 1 - Portfolio: 2

    With over 8 years of experience in IT, my goal is to build professional Java applications. My areas of expertise include a broad range of technical experience focused on software development and data design. In the last projects I've used Java-Swing, Applets, Java Processing 2.1, MT4j, JBoss 5.1, Oracle 9, YUI, Javascript, HTML, CSS, JDBC, EJB 2.1 and a lot of other libraries and technologies. Also I have some experience with Python.

    $150.00 /hr
    259 hours
    5.00
  4. Thomas Congrove

    Thomas Congrove

    Software Developer, Production Support, entry level DBA ltd. avail.

    United States - Last active: 04/16/2014

    Currently working as an Sr. IT Applications Developer for a Fortune 100 company. Recently retired from a two year tour as a software engineer and DBA for the military. My availability is limited by my primary development job, but if you have something small or just want a second set of eyes on your project, I'd be glad to assist!

    $25.56 /hr
    27 hours
    0.00
  5. Siarhei Kirpichonak

    Siarhei Kirpichonak

    Java, liferay, OpenClinica, EDC, Clinical Trials

    Belarus - Last active: 2 days ago - Tests: 3 - Portfolio: 6

    I'm involved in software development during last 9 years. I have good abilities and I'm looking for Java and liferay projects. Skills: Scala (Lift, Play), Akka, Java (Spring, Spring Web MVC, Lucene, Compass, Struts, GWT, JPA, Hibernate, Toplink, JAXP, Castor, Ant, Maven), Java EE (EJB, JSP, Servlets, JMS), RDBMS (PostgreSQL,MySQL, Oracle), (X)HTML/CSS/Javascript, XML/XSLT/XPath, PHP, GNU/Linux

    $30.00 /hr
    1,322 hours
    4.90
  6. Sedat Cankaya

    Sedat Cankaya

    Web Spider, Scraper and Data Miner

    Turkey - Last active: 5 days ago - Tests: 1 - Portfolio: 3

    Hello, Web scraping and data collection is my main profession. Im developing my own custom program specific to each website im going to scrape. Im not using a prebuilt software so i can adapt my program to any format easily. There is no exceptional case, i can scrape any website using any technology. Waiting for your command...

    $11.11 /hr
    1,180 hours
    4.89
  7. Bryan Noel

    Bryan Noel

    Android Developer || Software Engineer || Data Analyst

    Philippines - Last active: 2 days ago - Tests: 7 - Portfolio: 1

    My main objective is to provide excellent service, with timely, accurate, and professional results. Over the years I have worked for different companies as a Technical Support Representative, most of the clients were based in the US. I have also done some data entry and transcription work during my free time. During the course of my study I have experienced being a Project Manager and at the same time the Software Engineer for a startup. -Software Development: Web and Mobile (Android) -Graduate of Bachelor's Degree in Information Technology -A graduate of Computer Technology - Network Technology -Cisco Networking Module -Adobe Photoshop lessons -Experience in Customer Service and Technical Support

    $13.00 /hr
    5,963 hours
    5.00
  8. Jigarbhai Patel

    Jigarbhai Patel

    Expert C/C++/C# Programmer, Algorithms Developer, Technical Writer

    India - Last active: 4 days ago - Tests: 3 - Portfolio: 10

    "I believe in providing best quality services to my valuable clients." I have received the Bachelor of Engineering degree in Computer Engineering from Hemchandracharya North Gujarat University, Patan, Gujarat, India, in 2005 and the Master of Engineering degree in Computer Engineering from Dharmsingh Desai University, Nadiad, Gujarat, India, in 2008. My Part-time Ph.D. in Computer Engineering from Uka Tarsadia University, Surat, Gujarat, India, is pursuing since January 2013. My research interests include Artificial Intelligence, Computer Algorithms, Optimization, Machine Learning and Lean Manufacturing. I have excellent C/C++/C# programming proficiency. I have one year experience of Programmer and Customer Support Engineer & seven years experience of Assistant Professor in reputed Engineering Colleges. I have successfully developed several projects in C/C++/C#, guided 40 major projects of undergraduate students, 10 research projects of postgraduate students, published 7 research papers in international journals and attended 4 workshops & training programs organized by IIT Bombay & Nirma University. I have excellent proficiency to write high quality articles, blogs and e-books. I have effectively and efficiently solved the following combinatorial optimization problems by designing & implementing various algorithms such as A* search, brute-force-search, breadth-first-search, depth-first-search, branch-and-bound algorithm, hill climbing, greedy algorithm, genetic algorithm etc... in C/C++/C#. 1. Workforce scheduling and routing problems 2. Capacitated vehicle routing problem with time windows 3. Traveling salesman problem 4. Crew allocation & scheduling problem 5. Home health care problem 6. Job-shop scheduling problem 7. Tasks allocation problem 8. Packing problem 9. Cell formation problem 10. Machine layout problem 11. Cell layout problem 12. Circuit-satisfiability problem 13. Subset-sum problem etc… I have also developed projects of neural networks as follows. 1. I have trained perceptron for binary classification which can be used to predict whether a given car is a family car or not. 2. I have also trained perceptron for multiclass classification which can be used to classify the input into one of output classes namely car, human or dog. 3. I have also developed multi-layer feed-forward neural network to learn XOR function. I have taught various subjects at undergraduate & postgraduate level such as Microsoft Office, C, C++, Artificial Intelligence, Computer Algorithms, Computer Graphics, Computer Network, Computer Communication & Networking and System Programming.

    $50.00 /hr
    33 hours
    5.00