Senior Java Developers & Programmers

Showing 36,820 freelancers

Senior Java Developers & Programmers

Showing 36,820 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

  • Android Programmer - Java, C/C++, JS, PHP

    I have four years of experience developing on Java/C++/C/PHP, have excellent skills such as Javascript / JQuery / HTML / CSS. All of my project is successfully finished and now use by people, some of them you can see follows … more

    I have four years of experience developing on Java/C++/C/PHP, have excellent skills such as Javascript / JQuery / HTML / CSS. All of my project is successfully finished and now use by people, some of them you can see follows with link (https://play.google.com/store/apps/developer?id=M2M+Ukraine+Ltd). Just have a good experience in writing an android application with the use by NDK. Developing backend server multithreading applications using C/C++/Java(Servlets), possibly as a bunch of android application + backend. Some time working on a web project using JS/PHP. In my spare time I develop network applications under UNIX systems, for fun. I also have some experience in the following areas: SQL, Ajax, OOP, pattern design and software design.  less

    java c++ c javascript php postgresql mysql android-app-development 00 more less
    • $5.56 HOURLY RATE
    • 5.0
    • 0 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 3 TESTS
  • Java developer

    I have been programming in Java more than two year. Areas Of expertise: Expertise in Application development and support using Java, JSP, JSF, JDBC, Hibernate; Expertise in web/application servers like Apache (Apache HTTP Server), Tomcat (Apache Tomcat Server); Expertise in MySQL Server 3.x/4.x/5.x; Expertise in HTML, CSS.

    java j2ee hibernate mysql java-servlets-development jsf jsp html spring-framework css 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 0 HOURS
    • UKRAINE
    • 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/C++/.Net Software Engineer/developer/integrator/consultant

    Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices … more

    Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices, materials management, promotions, etc. Algorithms and programming skills, strong knowledge of C/C++ and Java. Strong knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, Algorithms for graphs, dynamic programming and computational geometry. Accounting area, experience in handling all movement of materials between stores and shops, all the accounting related to its retail. Point of sale Area, experience with integration between POS software and label printers, fiscal printers, barcode readers, fingerprinter and keyboards for point of sale. Oriented Object Programming and Low-level: exprienced in Java and C/C++/C#. QT libraries and Visual Basic. Scientific Programming: Matlab. IDES: Intellij Idea, Eclipse, Netbeans, Kile, Quanta. Servers: Apache-Tomcat. Functional Programming and AI: Haskell and Prolog. Database: MySql Oracle, Postgres, SQL Server and FoxPro. Web Development/Frameworks: Php, Struts, Vaadin, ZK, html and css.  less

    java c++ .net-framework vaadin-framework object-oriented-design mysql 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 1150 HOURS
    • VENEZUELA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • iOS/Android/Windows Native/Xamarin App Developer

    Over the last 6 years, I have developed a wide range of Android/iOS Applications. My Cocoa programming skill and iPhone app development skill are confirmed by oDesk, passed with 5 marks, 1st Place!. Java and Android App development skills … more

    Over the last 6 years, I have developed a wide range of Android/iOS Applications. My Cocoa programming skill and iPhone app development skill are confirmed by oDesk, passed with 5 marks, 1st Place!. Java and Android App development skills are also confirmed by oDesk. Excellent knowledge of Cocoa Framework and Java, and extensive experience in iPhone and Android allow me to make quality and high-performance applications. I can work on the server part for mobile applications too. Very good knowledge of OOP, OOD, Design Patterns, excellent problem solving skills. I have experience in all major components of iPhone and Android, such as: - UI : Custom components, UITableView, UICollectionView, Tab Bar, Navigation Bar, Fragments, Layouts, ActionBar, 2D Animations, Dialogs, Menu, User Interaction(touches, gestures) - Core : Background threading, Delegate, Custom Cell, Services, Receivers, Intents, Content Providers, Custom Adapters, Resources, Multithreading - Communication & Networking : HTTP, REST, Parse, Socket, JSON, XML, SMS, MMS, EMAIL, Bluetooth, NFC - Payment Process: Integration Paypal API with backend, Payment Process with Credit card reader - Hardware and Media: GPS, Google Maps v2, Speech Recognition, Playing Audio/Video, Taking Picture/Recording Video&Audio, Sound, Playing Sound Effects, Accelerometer, Gyroscope, Magnetometer - Persisting Data: NSUserDefaults, Extensions(such as Today Widget), SharedPreferences, Files, SQLite, Backup and sharing data - Interacting with System: Local Notification, Remote(Push) Notification, Alarm Manager, Timed and Periodic Tasks, Persistent Background Operations, Contacts, Calendar, Task Stack - Graphics: Canvas, OpenGL, OpenGL ES (libGDX) - Social: Facebook API, Twitter API, Google+ API, LinkedIn API I also have experience in developing back end API using MySQL and PHP. Growing cross platform requirements, I had been started to develop mobile apps using Xamarin, WindowsPhone application as well. Thank you !  less

    android-app-development iphone-app-development mysql java objective-c c++ c# xamarin 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 447 HOURS
    • POLAND
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 7 TESTS
  • Junior Java and Python developer

    I'm good in algorithmic thinking and have experience from numerous competitions during high school mostly using C/C++. I have good knowledge of object oriented programming mostly in Java/Python. In Python I have worked on several web based … more

    I'm good in algorithmic thinking and have experience from numerous competitions during high school mostly using C/C++. I have good knowledge of object oriented programming mostly in Java/Python. In Python I have worked on several web based projects using Flask framework and in Java I worked with swing graphics and multi-threading applications. On my college I have finished course basing on evolutionary algorithms(genetic, simulated annealing, PSO, etc) in Java. I am seeking opportunities to build websites or desktop applications.  less

    java python c++ 00 more less
    • $13.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • CROATIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Senior developer ( iOS, Android, Windows, ROR)

    *** Excellence is the unlimited ability to improve the quality of what you have to offer. *** *** If you can dream it, you can do it *** I am a senior iOS engineer and architect with 5+ years of experience in the mobile … more

    *** Excellence is the unlimited ability to improve the quality of what you have to offer. *** *** If you can dream it, you can do it *** I am a senior iOS engineer and architect with 5+ years of experience in the mobile industry. I have worked with a broad range of technologies and also took lead roles as an architect. I have experience with REST based APIs as well as client and server Facebook integration, and have implemented fault-tolerant systems with PHP and RoR back-end technologies. About credibility, you should see my client's review because credibility is someone else's idea of what I should be doing. Thanks for your time. PS: If you want to hire low rate worker, please don't waste your time because time is gold for both of us. -Languages Ruby, Java,Objective-C, PHP, JavaScript, C++, C,C#, HTML5 -Tools MS Visual Studio, Apple Xcode, Android SDK -Frameworks .NET Framework, Unity3D, Silverlight, COM, Json.NET,Cocoa Touch -Libraries/APIs Social Network API,Win32 API, OpenGL, -Platforms iOS, Android, Linux, Java EE, Parse, Unix, LAMP, Java SE, Heroku, JVM, Red Hat Linux, Node.js  less

    iphone-app-development android-app-development mobile-app-development c++ java jquery-mobile php project-management mysql driver-development 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 552 HOURS
    • MALAYSIA
    • LAST ACTIVE
    • 10 PORTFOLIO ITEMS
    • 9 TESTS
  • Technical Leader

    He graduated from Jilin University, majoring in grid computing. After graduation, he joined Baidu as an R&D engineer of the Ministry of the Web search; subsequently, he transferred to the IT department, and committed to the development of workflow … more

    He graduated from Jilin University, majoring in grid computing. After graduation, he joined Baidu as an R&D engineer of the Ministry of the Web search; subsequently, he transferred to the IT department, and committed to the development of workflow software which was used by Baidu Phoenix Nest and lots of systems. As an IBMer, he is the team lead in China of Platform Symphony Continuous Engineering team now; continue to contribute his passion to build the best SOA middleware. For the skill, he is a generalist; from C++ to Java, python, php, shell; from Grid/Cloud to Internet, JavaEE, Database, Operation; but his primary skill is to understand the user case quickly and provide suitable solution.  less

    c++ linux-system-administration unix-shell project-management c unix-system-administration tcp-ip java 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 2 HOURS
    • CHINA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 5 TESTS
  • Software developer C++/Qt, Java.

    Senior C++ Developer with 10+ years of experience. Excellent knowledge: С/C++, Qt, boost. Good knowledge: Java. Linux, Windows and MacOSX platforms. Extensive experience working with SQL and PL/SQL in MySQL, DB2, Oracle.

    c++ java python sql ibm-db2 mysql-programming 00 more less
    • $22.22 HOURLY RATE
    • 4.8
    • 114 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 4 TESTS
  • .Net/Java Developer | IT PRO

    ★★★★★ Top .Net Developer ★★★★★ I am highly skilled developer in .Net stack of technologies with strong network/server administration experience which allow to build full and the best solution depending on customer requirements. I am one who says ‘I am glad … more

    ★★★★★ Top .Net Developer ★★★★★ I am highly skilled developer in .Net stack of technologies with strong network/server administration experience which allow to build full and the best solution depending on customer requirements. I am one who says ‘I am glad I did’ rather than one who says ‘I wish I had’ on top of all my experiences with cut-edge technology. My skill-set: : Back-end: ✔ Java : Java EE, JCF, Multithreading, JDBC, Spring MVC, Hibernate ✔.Net : C#, ADO.NET/Entity Framework, ASP.NET MVC, RESTful API ✔ Grails / Groovy Front-end: ✔ HTML, CSS/Bootstrap ✔ JavaScript/JQuery/AngularJs Hosting: ✔ Windows Azure, GlassFish. IIS, Tomcat Additional background : ✔ Server technologies / AD DS, DNS, Hyper-V, IIS, DHCP, VPN, PowerShell. ✔ Computer science, Artificial Neural Networks, common math and physics. I hope own my company in future. Therefore I look forward to long-term relationship for projects from scratch/"have only specifications" stages.  less

    c# asp.net-mvc ado.net windows-azure java windows-administration virtualization powershell artificial-neural-networks network-administration 00 more less
    • $40.00 HOURLY RATE
    • 4.9
    • 34 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 7 TESTS
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