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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. Giang Le

    Giang Le

    Full-Stack Groovy/Grails Developer

    Vietnam - Last active: 2 days ago - Tests: 5 - Portfolio: 3

    Full stack developer with lots of experience in Grails, Java, J2EE, Hibernate, Spring, Struts, SpringBoot. Professional and academic background on architecting and building Multi-Tenant Software as a Service. I am a member of jcabi team. jcabi is a collection of small and useful Java components, which are not big enough to make their own projects. (http://www.jcabi.com/) I am also proficient in making bots,web crawlers, email scrapers , automation tasks based on selenium web driver/htmlunit and jsoup. I have been heralded as the "bot master" by various clients I have worked with due to my outstanding performance in automation jobs. My skill sets include: * Languages: Java, Groovy, SQL, C, Ruby, CSS, HTML, JavaScript, PHP * Frameworks Grails, Bootstrap, Ruby on Rails, Hibernate, Hadoop, Spring, SpringBoot, YII, Laravel * Libraries/APIs Java Collections, jQuery UI, jQuery, JAX-RS, Google Gson, JavaMail, Amazon API, Asterisk-Java, Selenium, HTMLUnit, Jsoup * Databases: - Relational: Mysql, PostgreSQL, Oracle, DB2; - NoSQL: Redis, Memcached, SimpleDB; In my case, I enjoy working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.

    $33.33 /hr
    5,952 hours
    5.00
  2. Adeeb A.

    Adeeb A.

    Quickbase Applications Architect

    United States - Last active: 21 hours ago - Tests: 11 - Portfolio: 3

    -Over 12+ years of experience in IT concentrating on Database (SQL) and Quickbase development. Quickbase Expertise: -Systems Analysis and design -Process workflows -Dashboards and reports -Custom forms (JS, HTML) -Custom Coding -3rd party application integration (client and server side) -Quenect ODBC integration Other Programming:expertise: Java, JavaScript, PHP, SQL, Ruby, C++,C, VB Please invite me for an interview to discuss my skills and experience in more detail.

    $85.00 /hr
    3,974 hours
    4.25
  3. Ashraful S.

    Ashraful S.

    Software Engineer

    Bangladesh - Last active: 21 hours ago - Tests: 9 - Portfolio: 12

    To work as a part of a dynamic team where there will be opportunities to make significant contributions. The work environment should require innovations that would utilize my educational qualifications, capabilities and practical and professional experience. javascript - 6+ years ajax - 6+ years extjs - 4+ years jquery - 5+ years angularjs - 2+ years node.js - 3+ years html - 6+ years css - 6+ years php - 6+ years java - 6+ years spring - 3+ years struts - 3+ years database - 6+ years bitcoin/litecoin technology - 2+ years

    $27.78 /hr
    5,414 hours
    4.81
  4. Muhammad bilal H.

    Muhammad bilal H.

    Certified Message Broke / MQ / J2EE / SOA Integration Developer

    Pakistan - Last active: 1 day 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
    830 hours
    4.87
  5. Nipuna Dananjaya kumara

    Nipuna Dananjaya kumara

    Skilled Programmer/Developer Web/Applications With Magento Experience

    Sri Lanka - Last active: 6 days ago - Tests: 7 - Portfolio: 6

    Programmer and Developer for Web and Software with 4 years of experience. Over the past 4 years, I have developed a variety of software and websites which covered many areas of the IT field and the non - IT fields. I am proficient with the following programming and markup languages • HTML • CSS • XML • JavaScript • PHP • MySQL • AJAX • jQuery • Java • C# • C++ I also have hands on experience in the following CMSs and eCommerce software. • Magento • WordPress • Joomla • Highwire Some more about them and skills of mine, Experienced Magento Developer/Administrator • Everything Magento. • Magento Installation • Template installation • Template customization • Building Custom Templates • Payment Gateways • Products setup • Teaching Magento for clients who need it. Need help with Magento? I'm your man. Joomla / WordPress & Highwire Superuser. Have a strong knowledge of Joomla , WordPress and Highwire and the functions behind the systems. If you need some projects done in the systems I can help you out at a good price. Skilled Developer for Web and Software. Need a Website or a Software created? I am here to help you by applying my knowledge and experience to solve your problems. And at the end you'll be amazed. Let me hear what I can do you for! Language skills • Communicates fluently in English. • Prefer to have a close dialog with my contractors - for a better end result. Education • Done A/L Examination in Commerce stream in 2010. • Following BIT (Bachelor of Information Technology) of UCSC (University of Colombo School of Computing) - External Regards Nipuna

    $16.67 /hr
    600 hours
    4.95
  6. Yury M

    Yury M

    Java Web Developer / Web Scraping (scrapy, selenium)

    Belarus - Last active: 21 hours ago - Tests: 4 - Portfolio: 5

    More than 5 years of java development (spring, MyBatis (iBatis), jersey, struts, jsp, jquery, dwr, quartz, spring security, hibernate, grails, nodejs, angularjs). Databases: Oracle, PostgreSql, MySql. Web scraping(scrapy, beautiful soup, lxml, phantomjs and selenium frameworks) Good skills in linux (installation, configuration, bash scripting). Python scripting (sites scrapping, client-server applications, xml and html parsing, small scripts for administration needs)

    $30.00 /hr
    264 hours
    4.99
  7. Billel H.

    Billel H.

    Master's Degree in Computer Science

    Algeria - Last active: 21 hours ago - Tests: 18 - Portfolio: 2

    An outline of my skills and experiences will show what I have to offer, I am professional in: -Web Development : html5, xhtml, CSS, PHP, JavaScript , jQuery, Resposnive Web Design, SEO, xml, ASP.NET using C# and VB -Integrated development environment (IDE): Microsoft Visual Studio 2010, Netbeans, Eclipse, Adobe Dreamweaver CS6. -Database: SQL, SQL server 2008R2, MySQL, Oracle Database, PostgreSQL and Data warehouse. -Programming language: C# ,java , python, Visual Basic, C++. -Office Suite: Microsoft Office (Word, Excel, PowerPoint, Access and Outlook), SharePoint. -Design and Multimedia: Adobe Creative Suite CS6 (Photoshop and Acrobat X Pro). -Operating System: Windows(XP, Vista, 7,8), Linux(Ubuntu, Red Hat), IOS. -Networking: Open Systems Interconnection (OSI) model, Internet protocol suite (TCP/IP) model, LAN, VLAN, WAN, DNS, DHCP, switch, Access point and Router Configuration. -Modeling language : Unified Modeling Language (UML) and Merise. -Architecture and Mechanical engineering: Technical drawing, Architectural drawing. -Management: Human Resource management. -languages: English, French and Arabic. I am at your disposal to DO THE BEST.

    $25.00 /hr
    82 hours
    4.79
  8. Vivek Viswanathan

    Vivek Viswanathan

    Expert Web App Developer & Manager

    India - Last active: 16 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
  9. John Comeau

    John Comeau

    expert troubleshooter, generalist developer, tenacious problem solver

    United States - Last active: 5 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
  10. Ralph Swartwood

    Ralph Swartwood

    Certified WebSphere Administrator

    United States - Last active: 5 days ago - Tests: 1

    I have 10 years experience working with WebSphere Application Server version 3, 4, 5, 6 and 7 on AIX, Solaris, HP/UX, Linux, zLinux and Windows. I am certified in versions 5, 6 and 7. I am looking for short and long term engagements including installations, resolution of a specific problem and ongoing support. I also have experience working with WebSphere Portal Server, Process Server, IBM HTTP Server and Apache. I developed JACL and Jython scripts to automate application deployments and to make configuration changes. I am very familiar with Java programming of servlets, JSP, SQL and JMS. I developed a Nagios plugin that monitored JVM availability and Performance Monitoring Infrastructure (PMI) metrics. I can analyze thread dumps for JVM hang problems and heap dumps for OutOfMemory issues. I also have experience with DirectConnect and training in DataPower appliance administration.

    Groups: TrueBLUE

    $50.00 /hr
    44 hours
    4.60