Senior Java Developers & Programmers

Get Your Java Programming Project Started Today!

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.

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

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, 623 Java projects are completed every quarter on Upwork.

623

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 4.70.

4.70
Last updated: May 1, 2015
More options
Clear all filters
  1. Igor Vodopyanov Agency Contractor

    Java/HTML5/Android/PhoneGap Developer

    Belarus - Last active: 04/11/2013

    iTechArt Group is a custom software development, consulting and outsourcing company headquartered in Iselin, New Jersey, with 2 business units in Eastern Europe and over 300 professional engineers. iTechArt provides custom software and product development, implementation, Quality Assurance, maintenance as well as application modernization and re-engineering. The company serves clients in 20+ countries across diverse markets and industries, including Software & Technology, Financial Services, Marketing & Digital Media, Security, Healthcare, Retail, Insurance and others. Since its foundation iTechArt has provided upwards of 1,000 projects for a vast customer base across Europe and North America. We have solid experience bringing products from concept to release in a considerable variety of environments: .NET/ASP.NET/C#/VB.NET/ Ruby on Rails/Python/MS SharePoint/ MOSS/WSS/IBM WebSphere Portal/CRM Systems/Windows Workflow Foundation/Oracle BI/IBM Cognos/TIBCO Spotfire/Microsoft BI/TIBCO Messaging/MS Message Queue Server/IBM WebSphere MQ/MS BizTalk Server/InfoPathJava/Java EE (JDBC, JNI, EJB, JMS, Servlets)/JSP/StrutsC/C++ (including ANSI C)/WinAPI/UnixCMS/DotNetNuke/Ektron/Drupal/Joomla/PHP/MySQL/MS SQL Server/AJAX/Flash/Action script/Flex/MS Silverlight/WPF/WCF/TIBCO General Interface/Windows Mobile/iPhone/iPad/Android/Blackberry/Quality Assurance and many more.

    Associated with: REMBROS CORPORATION DBA ITECHART GR

    $33.33 /hr
    225 hours
    5.00
  2. Vijay Dixit

    Java Developer and project manger

    India - Last active: 02/19/2011 - Tests: 2

    $75.00 /hr
    91 hours
    5.00
  3. Aldrin L.

    Aldrin L.

    Architect, Backend Engineer (Scala, Java, Hadoop)

    Brazil - Last active: 15 days ago - Tests: 12 - Portfolio: 1

    Over the past 15 years I've worked with projects ranging from Startups to Fortune 100s. From C++ to Scala, past assignments involved: - Protocol Design in C++/Delphi - Java API Publishing - Maven Plugin Development - Distributed Systems using RESTful backends - Scala / Akka Design - Jenkins Plugins Writing On a daily basis, I spend between Systems Architecture, Build Planning, for Hadoop and Restful Backends, specially under Amazon Web Services. Oh, I'm also a Cloudera Certified Administrator and Developer. Favorite platforms include Scala, Python and General Java. See my full profile for more descriptions and feel free to browse my github and bitbucket profiles at the addresses below: http://github.com/ingenieux http://bitbucket.org/aldrinleal Favourite customers involve pragmatic teams, with contant online presence, and direct involvement with the end customer, and a problem involving legacy and the next generation Feel free to discuss our next project - I'm always looking for the next challenge!

    Groups: LoginRadius, Microsoft Certified Professionals

    $55.56 /hr
    3,109 hours
    4.83
  4. Stanislav M.

    Stanislav M.

    Alfresco / Liferay / J2EE (Java) Senior Developer

    Germany - Last active: 8 days ago - Tests: 3

    I'm a great professional with 7+ years of real experience in Java-Web field. Reliable and goal-oriented I'll make your work done in a fast and high-qualified way. Key areas: J2EE; Alfresco 4.x - 5.x (Share Customization, Surf, Webscripts); Liferay Portal Customization; Activiti Workflow Engine; Spring Framework; WebServices (REST, Jersey, ...); ORM (JPA, Hibernate); My professional Liferay/Alfresco developer blog: http://www.soft29.info/blog

    $33.33 /hr
    1,566 hours
    4.99
  5. Eric Bouchard

    Eric Bouchard

    Senior Java/Web/Android Analyst/Developper

    Canada - Last active: 1 month ago - Tests: 11 - Portfolio: 4

    I have 13 years of experience in IT. 7 years as a Web Applications Analyst and Developer for a major Canadian Bank. I led multiple projects of small/medium size. Also 3 years of experience on the bank core systems on IBM MVS with COBOL. I personally developped as a personal projet www.sffmeta.com. I also developed the www.scanthing.com Android OCR application. Core competences : Java (Struts, Hibernate, Spring, etc...), JSP, Javascript/JQUERY, Android, SQL, HTML, COBOL, ASP, Windows, Unix/Linux. I have a lot of experience with communicating with systems end-users. I can speak both english and french.

    Groups: oDesk Verified Mobile Developers

    $50.00 /hr
    6,817 hours
    5.00
  6. Roman Kisilenko

    Roman Kisilenko

    Project Manager/Java Architect/Team Leader

    Russia - Last active: 20 hours ago - Tests: 2

    I'm leading IT department of Agilium Labs, LLC. On this job I share roles of project manager, team leader and architect to create mature products from scratch. From organizational point of view I have experience working in team leader role for 5 years, good project management and requirement management skills. I understand typical software development processes, fan of Agile & DevOps, able to organize development process on a project and manage risks. From technical point of view I have excellence knowledge of core Java, JEE, Java web frameworks and Swing. Certified Java developer. I know and able to follow Extreme Programming development practices and Scrum methodology. Have excellent knowledge of design patterns and software architecture. My other strong skills are Linux administration, database administration and development, SaaS applications development, VOIP applications development, virtualization and cloud services. Finally, I have some skills in Ruby, RoR, C++.

    $50.00 /hr
    2,013 hours
    5.00
  7. Vo K.

    Vo K. Agency Contractor

    Senior EMR Java PHP C# Engineers

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

    - Experience in application & web development experience in consulting, design, developing and maintenance on application software development including sales automation projects. - Good R&D, Specialist Electronic Medical Record and successfully to pass 2 International Certifications for US client: (E-Prescribing and ONC certification). Specialist in Agile Software Development by using OOP, Java, Ruby on Rails, TDD, SCRUM, XP, UML, Design Patterns - Work under pressure, make decision, solve problem quickly - Good work on Java J2EE, Spring, Struts, Play, JSF, JAVAFX, Vaadin, Tapestry,Wicket, FLEX, Spring, Struts, Hibernate Frameworks) - Experience working on C# WPF, WCF, METRO WIN 8, Silverlight,... - Experience on PHP: Yii, Codeigniter, Zend FW, CakePHP. Laravel. - Application Developer, Database Administrator. Particularly interested in client/server, WebService, Remote and relational database design using Oracle, NOSQL, MYSQL, and MS-SQL Server 2000, 2005. Javascripts: Jquery, Mootool, EXTJS, XML JSON,.. - OS: Linux, Centos, Fedora, Ubuntu, Windows, ... - Experience using GIT, VSS, SUBVERSION, GITLAB, GITHUB, - Specialist on Agile Methodology: SCRUM, XP using Mingle, Pivotal Tracker - Project: 1. RealEstate (www.diaoc24g.com) BY C#, ASP.NET 2. Ecommerce Travel Photos site (http://www.josephhendrixphotography.com) by C#, asp.net 3. PTS project ( PROTOTYPE TRACKING SYSTEM) for Chartered Semiconductor Manufacturing(J2EE, Spring, Struts, Hibernate). 4. 3 years worked for HEALTH CARE software:(Get Prescription' Certification of Surescripts(NEWRX, RXHUB, REFREQ, REFRES...) - Android for Health Care that help doctor check the patient from mobile Phone and synchronize data between Mobile Phone and Server Site. This function will help the doctor is easier to check inpatient, history visit, CPT, DX, ... - Worked HEALTH CARE SOFTWARE project, SuperEMR is a proven, affordable, and comprehensive electronic medical record system designed for small practices. Patient information including past medical and social history, encounters, diagnosis, medication, laboratory results, hospital reports, and medical imaging dicom results can all be stored electronically in secure databases. The system is web-based, allowing simple yet secure access to the patient information from anywhere and anytime. Daily remote backup in available for free for protection against system failures or natural disaster Development on this project (superemr.biz, superemr.com,superemrusa.net) Responsible for working with the client on implementation, fix bug, maintenance, managing project resources I did good job AND got the SURESCRIPTS AND RXHUB INTERNATIONAL CERTIFICATION for HEALTHCARE SOFTWARE (superemr.com). Work on DICOM open source project that used JAVA SWING to help the doctor can view XRAY, DICOM images, Web Application development. Database: MYSQL Client: US, Language: JAVA, WEBSERVICE, JNLP, PHP, webservice on UBUNTU, FEDORA

    Associated with: agileitvn

    $33.33 /hr
    1,270 hours
    5.00
  8. Mikhail K.

    Mikhail K. Agency Contractor

    Senior Ruby / iOS / Android / Java / C / C++

    Russia - Last active: 7 days ago - Tests: 7 - Portfolio: 1

    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.

    Associated with: Datacrafts Mobile, Datacrafts

    $33.33 /hr
    6,107 hours
    5.00
  9. Alexander I.

    Alexander I. Agency Contractor

    Senior Java / C++/ PHP / Ruby / Angular.js Developer

    Russia - Last active: 20 hours ago - Tests: 2 - Portfolio: 1

    I am a Lead developer with wide range of knowledge in web development process. My primary skills are Ruby on Rails, PHP, Java, jQuery, Javascript, AngularJS, C++and HTML, CSS. If you need well coded and well configured web site or web application, then I am a right man who can do this job. My main principle is: correct processes provide correct results. I am very interesting in ongoing jobs and partnerships, so it is very important that my clients had be happy to work with me. Feel free to contact me any time, my team and I would be glad to discuss your project.

    Associated with: Burning Buttons AI

    $33.33 /hr
    5,983 hours
    5.00