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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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On average, 406 Java projects are completed every quarter on Upwork.


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Time needed to complete a Java project on Upwork.

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Java Upwork freelancers typically receive a client rating of 4.73.

Last updated: October 1, 2015
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Kristian Josef Delos reyes

Kristian Josef Delos reyes

Labview, Java, Web, Arduino, Arm Programmer, / Graphic Artist / Design

Philippines - Tests: 3 - Portfolio: 31

Graphic Artist Duration: 8 years ++ Skill Set: Print Media, Graphics, Web design/Layout Technology: Adobe Photoshop CS2-CC , Mild 3Ds Max Electronics Hobbyist and Consultant Duration: 8 years++ Skill Set: Schematic Design, PCB Design, PIC16 Programming, Arduino, Arm Programming, robotics projects, undergraduate and masteral thesis. Technology: SMS, Blutooth, Serial, Parallel, GPIB, I2C, SPI, RF, RFID, Smart Card, Arduino, ARM, Pic, C, Altium, Proteus, IAR, PicBasic, VB6, C#, SDIO, RMII Embedded Systems and Systems Integration Duration: 5 years++ Skill Set: Planning, Architecture, Design, Packaging, Programming, Debug, Implementation, Maintenance, SMU, Data Acquisition, Data Logging, Multiplexers, Realtime, Sensors, Linux basic navigation and scripting Technology: ARM, Labview, NI PXI, NI CompactRio, NI USB, Arduino, Java, C#, VB6, JSP, VB6, MySQL, MS SQL, Postgres , C, C++, PHP, FTP, TCP/IP, UDP, GPIB, Serial, Parallel, Linux Software and Web Development Duration: 2 years++ Skill Set: Planning, Architecture, Design, Packaging, Programming, Debug, Implementation, Maintenance, Technology: Labview, Java EE/SE, Visual Studio, JSP, Struts MVC, Spring MVC, PHP, Joomla, CodeIgniter, Cakewalk, Drupal. MySQL, MS SQL, Python, Mild Android, Google Graphs APIs, Javascript, HTML5, Responsive Design, CSS. My passion entails on research and development or Software Development with touches of art and elegance. Also add the love for electronics and integrating computer science and electronics to create amazing things. I am a dynamic person, and I don’t stop on what I know.. I continue pursuing towards perfection. I continue to study and study to improve myself more and more.

87% Job Success
$20.00 /hr
500 hours

Darelle L.

Darelle L.

Web Developer/Programmer

Philippines - Tests: 1 - Portfolio: 4

Experienced Web Developer with excellent knowledge on HTML5, CSS3, PHP, MySQL, , Ajax, APIs, Opencart and CMS Platforms. I am currently working on a web design company, I am really attached to the projects I have so that I could make success deliverables to the client.

Groups: concrete5, LoadedCommerce

90% Job Success
$12.22 /hr
73 hours

Lei Zhang

Python/C++/Java/Web/Mobile Software Developer

Canada - Tests: 6

Over the past four years, I have been working in roles like mobile application programmer, security application developer, and J2EE web portal consultant for financial and engineering companies. I have solid design and programming skills in Java, Python and C++ with solid domain knowledge in application security and secure protocol design. In addition, I have also worked with a variety of mainstream web servers, databases and open source libraries in my previous projects. I am seeking opportunities to help create software that best suit you or your business needs with customer's satisfaction guaranteed.

$16.67 /hr
73 hours

Al Polinar

Al Polinar

Virtual Assistant with Web and Mobile Development Experience

Philippines - Tests: 4

To gain valuable experience and creativeness in work as a part of my academic degree and job accountability is an objective that I have set in my mind. I have worked as a Junior Web Developer, Virtual Assistant and as a Article Submitter at various sites. I have gained knowledge and experience over the past years that helped me what I am now. I have knowledge over HTML, CSS, PHP, MySQL, JAVA and Mobile Development.

$11.11 /hr
3,201 hours

Hitesh Pahuja

Hitesh Pahuja

Senior Java Developer

India - Tests: 3

Let me introduce myself as Hitesh Pahuja, having 9 years of IT experience as Senior Java Developer/Analyst. I have a strong background in Object oriented architecture, analysis, design and software development using latest technologies like Java, J2EE , Scala, Akka technologies. • Expertise in Product Iterative Development Model, Agile software development technique using principles like Test Driven Development, Continuous Integration and Automation testing etc. • Expertise in working throughout the project full-lifecycle, had worked on every phase of SDLC e.g. Application Security, Deployment, Requirement Handling, High level designing, Data Analytics and Statistics, Enhancement etc. . Experience in Application security at various layers like Web layer [ Fiddle, Nessus etc.], Web-Services Layer [ SSL, Fuzzing] etc. Extensive experience in Agile delivery of software using practices from Scrum, eXtreme Programming etc. Well versed experience in Test Driven Development, Mocking techniques and CI tools like Bamboo, Cruise Control and Hudson etc. I had worked with various types of applications like • SOA based using web services technologies. • Messaging based using JMS over JBoss/IBM Web Sphere. • Web-based application using technologies like Spring MVC, HTML, JavaScript, Ajax, JQuery etc. • E-Commerce based application. • Customer Support based application which involves dealing with client calls and resolving their technical issues. I have expertise in various domains like Banking [Retail and Loan based], e-Learning, Publishing Education and Retail etc. I am very keen to learn new technologies and business knowledge. I accept challenges and can work independently, can lead a team and act as a mentor to my juniors on technical front. For employment prospective I am open to contract role and on negotiable rates. I can make assure my stability with company and available immediately. Sincerely, Hitesh Pahuja,

$27.78 /hr
550 hours

Victor Macik

Victor Macik

Software Developer

Germany - Tests: 1

Over the last 12 years, I have developed a wide range of websites and backend solutions using Java, C++, PHP, and MySQL including sites for different scales of clients. My core competency lies in complete end-end development of backend solutions, along with turn-key products. Feel free to consult with me on any matter, as I'm working independently I promise to provide help even if you aren't interested in conducting business together - this is just the friendly way.

$33.33 /hr
33 hours

Afzalul Haque

Afzalul Haque

Python addicted script junkie, WebDev, SysOp with focus on Security

India - Tests: 6

I prefer coding in Python, but am well versed in several languages including Java, PHP, C. Would love to code backends. Quite nostalgic about simple algorithm challenges (TopCoder anyone?). Apart from these general flair, have some experience in pentesting and reversing. I regard security as the first concern, and believe to protect from evil, you must know the tools of their trade. I don't stop till I provide what the employer wants, for which, I generally prefer an employer who knows what he wants. I look forward to learn and re-innovate in any task.

100% Job Success
$20.00 /hr
277 hours

Diego Ramos

Diego Ramos

systems engineer

Colombia - Tests: 2

System Engineer with Project Management Specialization, and Scrum Master certification, 10 years of experience in design and programming client-server software, as a Freelance and a 6-year as a Team/Tech Lead for some CMMI certified companies (last 2 years worked in PSL Productora de Software S.A, the first software factory in Latin and Iberian America to be assessed at SEI's CMM and CMMI level 5, the highest software engineering benchmark in the world). Familiar with Enterprise technologies (IBM WebSphere, Apache Tomcat, different Application Servers), many programming languages (Java, C#, PHP, J2ME, etc.) and Data Base Servers (MySQL, SQL Server, and some others). Made multiple web, stand alone and client-server applications. Capacity to work in team, high compromise and responsibility with the work assigned.

Groups: LoginRadius

100% Job Success
$22.22 /hr
65 hours