Senior Java Developers & Programmers

Showing 36,624 freelancers

Senior Java Developers & Programmers

Showing 36,624 freelancers

Get Your Java Programming Project Started Today!

Post your Java projects on oDesk 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 oDesk 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 oDesk, 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.

Browse Java job posts for project examples or post your job on oDesk for free!

Java Job Cost Overview

Typical total cost of oDesk Java projects based on completed and fixed-price jobs.

oDesk Java Jobs Completed Quarterly

On average, 486 Java projects are completed every quarter on oDesk.

486

Time to Complete oDesk Java Jobs

Time needed to complete a Java project on oDesk.

Average Java Freelancer Feedback Score

Java oDesk freelancers typically receive a client rating of 4.69.

4.69

Last updated: March 1, 2015

  • JEE Architect - Developer / ExtJS Developer

    Highly skilled systems architect and developer with more than 25 years of experience designing, developing and deploying applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of … more

    Highly skilled systems architect and developer with more than 25 years of experience designing, developing and deploying applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of Java SE and JEE stacks, from early versions 1.x up to latest version SE 7 and JEE 6. ✔ Deep understanding of old technologies such Cobol, ISAM, flat files, pipes, “green screen”, etc. This knowledge allowed me to design, code and implement integrations between new applications with legacy ones. ✔ Solid leading and mentoring skills to help and encourage individuals to maximize their productivity by applying the best practices, frameworks, libraries and technology in general. ✔ I'm always learning about new technologies and tools to ease and reduce time spent in application development and deployment. Technology by itself is worth nothing if it does not solve real world problems.  less

    java j2ee extjs oracle-plsql ibm-db2 glassfish sencha delphi cobol microsoft-entity-framework 00 more less
    • $45.00 HOURLY RATE
    • 5.0
    • 535 HOURS
    • GUATEMALA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
    GROUPS:
  • Senior Ruby on Rails Developer

    Do you have a great idea? Do you need help or someone to consult with for your web site and mobile apps? You can always invite me and discuss your problem. I will be there for you Full stack Ruby … more

    Do you have a great idea? Do you need help or someone to consult with for your web site and mobile apps? You can always invite me and discuss your problem. I will be there for you Full stack Ruby on Rails developer, primarily focused on back-end with experience in setting up VPS with Nginx and Unicorn or deploying apps on Heroku. Currently I'm interested in e-commerce so I'm familiar with Spree and also writing prototype of e-commerce solution based on MongoDB and Rails. Specialization:- 1.Ruby on Rails (Ruby 1.9.3, 2.1.1, Rails 2.x, 3.x, 4.x) 2 Jquery, Ajax, 3.API Integration. 4. Redmine Integration 5. AWS integration, 6. Heroku deployment 7. Git version control. 8. SaaS Development 9. salesforce integration. 10. API development. My Expertise : Ruby on Rails ( 5+ Years) Availability : 40 hours/ week Communication Via : oDesk/Gtalk/Skype/Mail or Call. Reporting : on daily basis. Please feel free to ask for any further query, I will be happy to work with your project and make it successful.  less

    java ruby-on-rails heroku saas github software-testing mongodb git 00 more less
    • $15.00 HOURLY RATE
    • 4.7
    • 560 HOURS
    • INDIA
    • LAST ACTIVE
    • 8 PORTFOLIO ITEMS
    • 4 TESTS
    ASSOCIATED WITH:
  • Java Developer/Project Management/Applications/Wordpress

    I have 16 years of work experience, 12 years in the I.T. industry as a Software Developer as well as 4 years in the academe as a Department Link Coordinator and I.T. Instructor. I've led different types … more

    I have 16 years of work experience, 12 years in the I.T. industry as a Software Developer as well as 4 years in the academe as a Department Link Coordinator and I.T. Instructor. I've led different types of teams for more than 7 years and have been involved in freelance, team projects and enterprise solutions. I specialize in Application Software Development, Project Management, Hardware Interfacing and Open Source Solution/Customization. Primary technologies used are Java, Swing, Webstart, NetBeans, Wordpress, mysql, PostgreSQL, third party APIs, VPN and other technologies. I've also worked for different foreign companies as a home based consultant, programmer freelancer and quality engineer for web content, system flow and process documentation. Other experiences are in the line of CCTV Surveillance and Security Systems. You can visit my profile website for projects I have accomplished. http://bertbatac.weebly.com/ Thanks, Bert Batac  less

    java wordpress project-management business-development account-management software-testing netbeans swing postgresql mysql linux-system-administration ubuntu c++ microsoft-word desktop-publishing microsoft-publisher microsoft-excel apache-administration svn tortoise-svn cvs hardware-troubleshooting manual-testing audacity data-encoding data-entry 00 more less
    • $16.67 HOURLY RATE
    • 4.9
    • 1031 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 5 TESTS
  • Senior Ruby / iOS / Android / Java / C / C++

    Mikhail is a developer with more than 7 years of experience. Mostly he worked as a backend developer. He has a strong basis in common computer science, including algorithms, design patterns, cryptography, network protocols, CPU architectures. He has a proficiency … more

    Mikhail is a developer with more than 7 years of experience. Mostly he worked as a backend developer. He has a strong basis in common computer science, including algorithms, design patterns, cryptography, network protocols, CPU architectures. He has a proficiency level in the next technologies: - Java, C/C++, Assembler (FASM x86/x64); - Windows API (incl. Crypto API) and Winsock; Mike is familiar with the next (non-comprehensive) list of frameworks and technologies: BSD sockets, Qt, Win32, MVC, Spring, JPA, Hibernate, JUnit. He is familiar with the most of SQL DB systems available on the market: MS SQL, MySQL, PostgreSQL, SQLite. And, of course, he is interested in noSQL world (he used MongoDB in some projects). He is also familiar with mobile development for such platforms as iOS and Android (Mike developed merchant applications for several webshops). He is able to design web application architecture and likes to work on high loaded applications and applications with high responsibility. When he heard about Ruby he was fond of this language, its infrastructure, community and Ruby on Rails framework in particular. Mikhail likes and uses agile methodologies for software development routines, he likes Scrum (or some derivatives from it) and has experience with RUP. He has strong opinion that source code without version control over it is not a good source code. He definitely likes git, but in the past he used SVN and CSV too.  less

    c++ win32-app-development java spring-framework ruby ruby-on-rails ios-development android-app-development sql nosql 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 6107 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 7 TESTS
    ASSOCIATED WITH:
  • Android/IOS Developer

    I have developed many ios, android apps for 3 years. In ios, android projects, I have excellent skill about code and speed. In particular, I have many experience about facebook, twitter , Parse.com, GPS, Push Notification, Map. Also I have … more

    I have developed many ios, android apps for 3 years. In ios, android projects, I have excellent skill about code and speed. In particular, I have many experience about facebook, twitter , Parse.com, GPS, Push Notification, Map. Also I have great experience about UI. In android , UI is very important. I can make android UI for all devices. And I have developed many photo processing app for mobile. In here, I used SDK like Aviary SDK, GPU Image etc. If I am hired to new project, I will do my best for the project. Welcome to review my profile.  less

    iphone-app-development android-app-development ios-development objective-c java c c++ adobe-photoshop 00 more less
    • $33.33 HOURLY RATE
    • 4.9
    • 427 HOURS
    • JAPAN
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 7 TESTS
  • Full-stack, Web, Middleware and Big Data developer

    After working in the R&D industry for more than 8 years, mostly working in european and national R&D projects, using mostly Java and Python as the core of our technology and Eclipse, creating client-server middleware applications. I've … more

    After working in the R&D industry for more than 8 years, mostly working in european and national R&D projects, using mostly Java and Python as the core of our technology and Eclipse, creating client-server middleware applications. I've decided to start working as a freelancer to solve more "real world" issues. I can cover virtually the whole stack, from back-end to front-end, since I also have experience with Android, Javascript (Angular), HTML5 + CSS3 (Bootstrap) and don't mind doing graphic desing (Illustrator, Inkscape, GIMP, etc) for UI design. Latetly I've been working with BigData analytics tools: Hadoop, Hive, Pig, MongoDB. I've also have plenty of expertise in system administration, since I was the manager of a virtualization infrastructure in my previous job, and I also have experience with cloud deployement with Amazon, Google (GAE and GCE), Google APIs and other VPS systems. You could say I'm very flexible in terms of adaptation, technology adoption and quick-learning. I'm always eager to learn new stuff and apply it! This is my personal blog, related to technology: www.internetmosquito.com Here is my stack overflow profile: http://stackoverflow.com/users/526801/alejandrovk My GitHub and Bitbucket: https://github.com/internetmosquito https://bitbucket.org/alejandrovk This is my Linkeidn: http://es.linkedin.com/in/avillamarin  less

    java eclipse python postgresql mongodb rest osgi javascript google-apps-api 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 832 HOURS
    • SPAIN
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Skilled Software Developer

    I am a skilled software developer with a master's degree in Computer Science, and several years' worth of professional computer programming experience. My areas of expertise are web design and development (HTML, CSS, JavaScript, JQuery, PHP, ASP.NET, WordPress … more

    I am a skilled software developer with a master's degree in Computer Science, and several years' worth of professional computer programming experience. My areas of expertise are web design and development (HTML, CSS, JavaScript, JQuery, PHP, ASP.NET, WordPress, Joomla), database administration and development (MySQL, T-SQL), as well as desktop application development (C++, C#, Java).  less

    c# php wordpress java joomla asp.net sql html5 jquery mysql 00 more less
    • $10.00 HOURLY RATE
    • 5.0
    • 6 HOURS
    • BOSNIA AND HERZEGOVINA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Web Developer/php/wordpress/photoshop

    I have done my graduation in Computer Science.I have worked in software house as well where I have completed number of successful projects including wordpress,core php ,MySQL,java script and some Java projects aswell.. ..

    java mysql php css html5 html sqlite wordpress cakephp javascript 00 more less
    • $12.22 HOURLY RATE
    • 5.0
    • 5 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 3 TESTS
  • Java developer

    I'm an independent freelancer located in Ukraine (UTC+2). I'm an expert programmer with a Master's Degree in Computer Science. In my over 5 years of professional experience I have worked with many technologies and took part … more

    I'm an independent freelancer located in Ukraine (UTC+2). I'm an expert programmer with a Master's Degree in Computer Science. In my over 5 years of professional experience I have worked with many technologies and took part in several large projects such as: enterprise billing systems, automated workflow systems and crowdfunding service-oriented platform. I have rich experience with client-server software design and development, using a wide range of Java technologies. I ready to take part in any phase of full cycle development from backend to frontend. Rapid prototyping of information systems with modern technology using, will allow you, with my help, in the shortest time to realize your idea and decide on the further evolution of your project. In my toolbox you can find: RDBMS: - PostgreSQL + PgPL/SQL; - MySQL; - Oracle DB + PL/SQL; Java technologies: - JDBC, Hibernate and myBatis; - SpringFramework (Core, Security, MVC, AOP, Web Services); - JSP, Servlets; - JAXB, JAXP; - JAX-WS, JAX-RS; - RMI, RPC Thrift; Servlet containers: Tomcat, Jetty; JavaScript: BackboneJS, Underscore.js, jQuery VCS: CVS, SVN, TFS and Git with Git flow; Other: - AJAX; - JSON; - Bootstrap; - HTML5; I am able to learn new skills very quickly if required (which I never charge for).  less

    java postgresql javascript spring-framework j2ee sphinx jdbc jpa 00 more less
    • $17.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Java, Spring, Hibernate, GAE, Android, jQuery

    I have developed a wide range of mobile apps and web development including working as a free lancer for J2EE projects, working on server side development at Xora, Inc using Java, Spring, Hibernate for location based applications. Developed both server … more

    I have developed a wide range of mobile apps and web development including working as a free lancer for J2EE projects, working on server side development at Xora, Inc using Java, Spring, Hibernate for location based applications. Developed both server side and android app for MobiTexter and RapidNotifer https://play.google.com/store/apps/details?id=net.mobitexter and RapidNotifier: https://play.google.com/store/apps/details?id=com.rapidnotifier Experience in Java, J2EE, Spring, Hibernate, Google App Engine, Google Maps, jQuery, Android, Twitter Bootstrap, MySQL, BigTable, Oracle  less

    java 00 more less
    • $18.00 HOURLY RATE
    • 5.0
    • 138 HOURS
    • INDIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
    ASSOCIATED WITH:
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