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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. Kari Hirvi

    Kari Hirvi

    C++/Qt/Matlab/Python developer with scientific background

    Finland - Tests: 7

    I have years of experience with Matlab and I'm very productive with it, whether it's algorithm development, visualizing data or creating GUIs, for example. I'm also well versed in Python and I can provide a working software version quickly with rapid iterations with feedback from the client. I have also professional experience with C++, C# and Java, and I can bundle them into the project as needed. I have a PhD in physics and I've been working in different positions ranging from project manager and developer to customer service and helping sales. I can translate your problem into working code, and, if needed, refine the project requirements based on your business case. Below are few examples where you could gain tangible benefits from my experience - Matlab development of all kind, e.g., algorithms, GUIs, full applications - Data conversion and processing from one or multiple sources - Implementing algorithms based on scientific publications - Converting algorithms from another language to C++,C#,Java, Python or Matlab - Data analysis and visualization - Requirement analysis & management, e.g., reading texts and extracting measurable requirements from them with traceability to the source - Measure requirements quality by classifying them, e.g, is there an acceptance criteria, is this a system or user requirement, does the requirement have multiple requirements in it. - Creating and writing acceptance testing procedures with traceability to the project requirements I can work on both Windows and Linux platforms. Looking forward to working with you! Kari References: - LinkedIn: http://fi.linkedin.com/in/karihirvi - GitHub: https://github.com/karihirvi - Some older material in Google code https://code.google.com/a/eclipselabs.org/p/capua/

    $60.00 /hr
    0 hours
    0.00
  2. Herbert john E.

    Herbert john E.

    Java Programmer/Developer and Mathematics Instructor

    Philippines - Tests: 3 - Portfolio: 3

    I am a mathematics teacher for four years teaching basic and advanced mathematics subjects. I had experienced teaching the following subjects (but not only limited to): algebra, advanced algebra, trigonometry, analytic geometry, mathematical finance, complex number analysis, calculus, differential equations, and discrete mathematics. In addition, I also have skill in Java Programming Language, MySQL, Java Server Pages, HTML, and CSS. I had accomplished several programming projects before such as payroll system, billing system, and monitoring system for a University

    $15.00 /hr
    0 hours
    4.60
  3. Nalinda Sampath

    Nalinda Sampath

    Web ,Desktop & Mobile Based Java Specialist

    Sri Lanka - Tests: 3 - Portfolio: 3

    I'm a certified J2EE & J2SE architect and interested in developing research based web & desktop applications. Through my work, I create customized business management web applications, integrated web-desktop applications. Now it has expanded my talents towards adobe technologies such as action script and flex, establishing a good partnership with a professional and experienced UI / UX engineer. Visit his graphicriver portfolio : http://graphicriver.net/user/anchor_point_heshan/portfolio So I'm glad to say that we now have the ability to develop complete applications with enhanced user experiences.

    $16.67 /hr
    2,020 hours
    4.86
  4. Zhenya Tulusha

    Zhenya Tulusha

    iPhone/iPad & Android developer with more than 3 years experience

    Ukraine - Tests: 1 - Portfolio: 22

    4 years ago, I developed a wide range of websites using HMTL, CSS, PHP, and MySQL. The biggest part of them was e-shops developed and modifide for KTTSoft company. I start my carier of Mobile Software developer in KTTSoft company too. For last 3 years I have been highly integrated with mobile software development for iOS and Android (especially for iOS). For this period of time learned a lot of mobile technologies and made many different applications. You can check some of them on my portfolio page I mostly worked for DIMALEX LLC and got a lot of experience in mobile technologies and mobile developers team leadership.

    $20.00 /hr
    75 hours
    5.00
  5. Aman Thakur

    Aman Thakur Agency Contractor

    Application/System Programmer

    India - Tests: 6 - Portfolio: 7

    Over the last 3 years, I have developed several application with .NET 2.0 & 3.5 and worked on databases like MS SQL SERVER, ORACLE and MySql while learning at institutions and working at a MNC. My core competency lies in my programming logic, and i am seeking to have some quality work in Desktop and Web Application Development and Security.

    Associated with: SEC INFOTECH PVT LTD

    $11.11 /hr
    8 hours
    5.00
  6. Mindaugas K.

    Mindaugas K.

    Java EE & Delphi Developer

    Lithuania - Tests: 5

    I am ready to participate in long term (preferably) projects. Experienced from several projects based on team work and detailed planning, and developing of the main Personnel and work payment process management and accounting systems in Baltic countries. Have ability to analyse and evaluate various information systems and technologies, to examine their variation value and develop problems, able to design information systems and technologies, using programming and technical solutions, and to develop new programming approaches. I have 4 years of experience in Java/J2EE: (Servlet, JSP, JDBC, JPA, J2ME, Struts, Spring IoC, Spring MVC, Ajax, JQuery, XML/XSL, Hibernate, Oracle, MS SQL, Tomcat, GlassFish, Lucene). I have 4 years of experience in Delphi 5/6/7 (ADO, DB, DevExpress, FTP). Total exp.: over 7 years in IT field as app. developer (internal companies BMS, CRM, DMS systems).

    $22.22 /hr
    0 hours
    5.00
  7. Carlos Oliveira

    Carlos Oliveira Agency Contractor

    Internet & software general development with 15 years of expereince.

    Brazil - Tests: 2 - Portfolio: 4

    Web Development and Project Management professional, 15 years of experience. I am a passionate computer engineer. I´ve made my way up in my career gathering experience in different areas and positions. After a lot of projects, I have remarkable performance in development of systems for Internet, using Java, Microsoft .NET, Oracle, Mysql, PHP, and Social API's technologies (Facebook, Foursquare, Twiiter, Google+, Linkedin). Moreover, I have worked with infrastructure administration, maintenance of business information systems and decision making support systems (BI), as well. Skilled in interfacing with all levels of staff including the senior management team. Strategic integrated business view, strong analytical thinking and result-oriented. I am very self motivated and go-getting professional that caters for the projects and whose goal is to generate earned value to the company and the client.

    Associated with: TrustTeck

    $15.00 /hr
    677 hours
    5.00
  8. Ivan Matic

    Ivan Matic

    Serbia - Tests: 7 - Portfolio: 6

    First things what I'd like to say is that I work only on projects where you can provide me access to your resourses. For working "on blind", theory, suggestion or any other form of work where I can't see results... simply forget it, I won't work with you. Teamviewer is too slow for working, so only in some cases I'll accept to work on that way. My skills: Languages, envirements and projects C - POS terminals, Linux shared libraries, Cryptography, Protocols; Java - Cryptography, Protocols, JDBC, Ibatis; C# - Amazon MWS; Oracle PL/SQL developer; PostgreSQL + migration of projects from Oracle to PostgreSQL; Python - by need for scripts and help tools. Linux knowledge. Experience in payment industry. Capable to organize your data into database.

    $16.67 /hr
    2 hours
    5.00