Senior Java Developers & Programmers

Showing 3,546 freelancers

Senior Java Developers & Programmers

Showing 3,546 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

  • Java/JEE Expert/Architect, Oracle Certified

    I have +9 years of experience developing enterprise class Java applications (EJB, JPA, Spring, Hibernate, Struts, JAX-WS, JAX-RS ...) and I am Oracle programmer and developer certified (SCJP, SCWCD, SCBCD & SCJDWS). I have also +3 years developing modern web applications using … more

    I have +9 years of experience developing enterprise class Java applications (EJB, JPA, Spring, Hibernate, Struts, JAX-WS, JAX-RS ...) and I am Oracle programmer and developer certified (SCJP, SCWCD, SCBCD & SCJDWS). I have also +3 years developing modern web applications using frameworks like: BackboneJS, AngularJS, jQuery, underscore, require.js, ...  less

    java javascript jquery sql java-servlets-development oracle-java-ee oracle-database backbone-js angularjs git 00 more less
    • $111.11 HOURLY RATE
    • 5.0
    • 562 HOURS
    • MOROCCO
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 9 TESTS
    GROUPS:
  • 11 Years on Java/J2EE Spring Hibernet SOA & Android + PM experience.

    I have 11+ years of experience developing turnkey and commercial projects. My skills and experiences: - Core JAVA, J2SE (Threads, Sockets, IO/NIO, Reflection, Swing/Applets), OOP and java/design patterns - J2EE (Servlets, JSP, EJB3), Hibernate/JPA, XML, UML, JUnit - SQL … more

    I have 11+ years of experience developing turnkey and commercial projects. My skills and experiences: - Core JAVA, J2SE (Threads, Sockets, IO/NIO, Reflection, Swing/Applets), OOP and java/design patterns - J2EE (Servlets, JSP, EJB3), Hibernate/JPA, XML, UML, JUnit - SQL and RDMS (Oracle, SQL Server, Postgres, SQLite), Excel/VBA - Virtualizations: VMware ESX/ESXi (VMware VI-SDK, VIJava), Microsoft HyperV 2008/2012 (J-Interop), Xen/Citrix (XML-RPC), KVM (libvirt) - Network protocols: SNMP (snmp4j), CIM (sblim-cim-client), IPMI/DCMI/RMCP, XML-RPC, COM/DCOM - Ant, Maven, Eclipse (+Plugins/SWT/JFace/GEF), Netbeans, JBuilder - CVS, SVN, ClearCase, StarTeam - Apache Tomcat, JBoss 6/7, OpenDS - HTML, CSS, JavaScript - Linux (RHEL/Suse/Ubuntu) - Alfresco development and customization - Vaadin + Activity worflow designing.  less

    mysql jstl jsf spring-framework hibernate sas java j2ee web-design core-java javascript 00 more less
    • $16.70 HOURLY RATE
    • 5.0
    • 4171 HOURS
    • INDIA
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 6 TESTS
  • Java, Scala, Clojure, JavaScript expert.

    I have over 5 years of experience in developing web applications using Java, Scala, Spring, Play, Hibernate and JavaScript. I have developed highly concurrent, reactive applications on the JVM, as well as large-scale enterprise apps that worked with legacy databases … more

    I have over 5 years of experience in developing web applications using Java, Scala, Spring, Play, Hibernate and JavaScript. I have developed highly concurrent, reactive applications on the JVM, as well as large-scale enterprise apps that worked with legacy databases. Currently, Clojure and Scala are my tools of choice when working on my side projects. Recently, Elixir has become a part of that as well. In the past, I have developed full-scale apps using Objective-C and, ahem, PHP as well. I have been working with Scala and Clojure for quite a long time now. I have been a long time user of git, mercurial, gradle, and maven with some experience with sbt. Apart from these, I have dabbled in a lot of languages and frameworks like Go, Ruby, CoffeeScript, Groovy, node.js and several others. I have an ability to pick up new things easily. I learn new things almost everyday. I am always on the lookout for new tools for solving problems. And I have always succeeded in coming up with elegant solutions to programming problems.  less

    java scala play-framework spring-framework javascript jquery hibernate clojure oracle-java-ee mysql 00 more less
    • $25.00 HOURLY RATE
    • 5.0
    • 320 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • J2EE/Spring/Hibernate/JSF/WebServices/Camal/ESB/Struts2/SOA/SAAS

    I am having more than 7 years experience in developing web based enterprise solutions using technologies like Java, J2EE, Struts, JSF, Spring, Hibernate, Rich Faces, Prime Faces, GWT, Smart GWT. Further Android, JBPM, Performance Tuning, Query Optimization, Code Profiling, Memory … more

    I am having more than 7 years experience in developing web based enterprise solutions using technologies like Java, J2EE, Struts, JSF, Spring, Hibernate, Rich Faces, Prime Faces, GWT, Smart GWT. Further Android, JBPM, Performance Tuning, Query Optimization, Code Profiling, Memory Leaks and Team management. I have experience in SOA, SaaS and integration technologies like web services(jax-ws,jax-rs), JMS (Jboss Hornet Queue, Active MQ), Amazone Marketplace Web Services, Sales Force and Enterprise Service Bus (ESB) specially Mule ESB, Apache Camal, Service Mix and WS02 ESB. I don't work on small fixed price jobs. Please don't bother to invite me. I am interested in long term engagement with an established firm.  less

    java j2ee spring-framework apache-shirol jsf hibernate jpa sql spring-security apache-camel 00 more less
    • $33.33 HOURLY RATE
    • 4.9
    • 1919 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • Java and XML consultant

    I am an electronics engineer, XML consultant, technology evangelist, and frequently published technical author. After graduating in 1995 from the University of Engineering and Technology, Lahore, I began designing software solutions for industrial control systems. Later, I turned to XML … more

    I am an electronics engineer, XML consultant, technology evangelist, and frequently published technical author. After graduating in 1995 from the University of Engineering and Technology, Lahore, I began designing software solutions for industrial control systems. Later, I turned to XML and built web- and WAP-based XML processing tools, server-side parsing solutions, and service applications. Since 2006, I have focused exclusively on Java- and XML-based open source tools and solutions. A strong advocate of open source tools, I not only design solutions based on them but also train software and IT personnel at Lahore universities in using open source technologies. I am the author of JasperReports 3.6 Development Cookbook (Packt Publishing, 2010). Please see my following articles that I've been writing to display my work. Data visualization, Part 1: Visualize browsing metrics with SVG and D3 http://www.ibm.com/developerworks/opensource/library/os-dataviz1/index.html?ca=drs- Data visualization, Part 2: Use D3 component layouts http://www.ibm.com/developerworks/opensource/library/os-dataviz2/index.html Bonita for business process management, Part 1: Configure a simple workflow http://www.ibm.com/developerworks/opensource/library/j-bpm1/index.html Bonita for business process management, Part 2: Configure forms and variables http://www.ibm.com/developerworks/library/j-bpm2/ Integrate social networks into BPM, Part 1: Collect Twitter data http://www.ibm.com/developerworks/library/j-sb1/ Integrate social networks into BPM, Part 2: Add Twitter data to CRM http://www.ibm.com/developerworks/library/j-sb2/ XML Canonicalization http://www.xml.com/pub/a/ws/2002/09/18/c14n.html http://www.xml.com/pub/a/ws/2002/10/09/canonicalization.html Integrating healthcare services, Part 1: Using an Enterprise Service Bus for healthcare https://www.ibm.com/developerworks/java/library/j-hsb1/index.html Integrating healthcare services, Part 2: Using Apache ServiceMix as a Healthcare Service Bus https://www.ibm.com/developerworks/java/library/j-hsb2/ Design XML schemas for enterprise data https://www6.software.ibm.com/developerworks/education/x-schemadata/x-schemadata-a4.pdf Build configurable workflows with WS-BPEL and IoC, Part 2: Developing and hosting BPEL workflows http://www.ibm.com/developerworks/java/library/j-bpel-ioc2/index.html Deploying Web services with WSDL, Part 1: Introduction to Web services and WSDL http://www.ibm.com/developerworks/library/ws-intwsdl/ Securing Java applications with Acegi http://www.ibm.com/developerworks/library/j-acegi1/ Web Services Security, Part 1 http://www.xml.com/pub/a/ws/2003/03/04/security.html Web Services Security, Part 2 http://www.xml.com/pub/a/ws/2003/04/01/security.html Implementing XML Encryption in Java http://www.xml.com/pub/a/ws/2004/04/21/wss4j.html  less

    java javascript xml xml-web-services spring-security bpel erp xslt 00 more less
    • $35.00 HOURLY RATE
    • 5.0
    • 277 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 1 TEST
  • 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:
  • 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
  • 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
  • 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:
  • 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
loading