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On average, 370 Core Java projects are completed every quarter on Upwork.


Time to Complete Upwork Core Java Jobs

Time needed to complete a Core Java project on Upwork.

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Core Java Upwork freelancers typically receive a client rating of 4.70.

Last updated: October 1, 2015

Popular Core Java Searches

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Umair Baig

Umair Baig

Java, JEE, Spring, JSF, JSP/Servlet,Hibernate,POI, JDBC

Pakistan - Tests: 6 - Portfolio: 4

I have almost 3 Years professional experience working in java( J2EE, J2SE). I have successfully designed, developed, and supported live use applications. I provide exceptional contributions to customer service for all customers. With a BE degree in information technology, I have a full understanding of the full life cycle of a software development project. I also have experience in learning and excelling at new technologies as needed. I have worked in JAVA (SE & ME & EE) EJBs 2.1, JSF, Spring, Hibernate, iReports, JSP, JMF, Java Script, APIs , Ajax, MySQL, Oracle, MS Access, PostgreSQL.

$11.11 /hr
1,068 hours

Anirudh Sirohi

Anirudh Sirohi

On mac softwares .. apart coding

India - Tests: 3 - Portfolio: 1

i use Apple mac these days i am free to do anything u require on mac and i can do anything u want .... just pay me better for better services and i am not interested in any hardcore job .. i simply do it for fun and learning if u want my services u can contact here only / Over the last 4years i have developed various web applications using attractive FLEX front-end and JAVA back-end using MySQL as database .I have also used HIBERNATE for query handling of database. I have used ANT for build purposes and TOMCAT AND BLAZEDS for end to end communication with in the application. I also worked on various Android applications for access of various features of web-application via mobile.

$20.00 /hr
641 hours

Artem D.

Artem D.

Java Web developer, Spring, Hibernate, JavaScript, PHP, SQL

Ukraine - Tests: 1 - Portfolio: 3

Hello, my name is Artem, thank you for viewing my profile. In my portfolio you can find few Web applications that I've developed. My goal is to meet and understand my customers` needs. Also I understand the importance of being Punctual and have Clear Understanding of customer`s vision of the project. Professional Skills: Knowing the principals of OOP and OOD; Java Technologies, Tools and Frameworks: Java core, Collections, Multithreading, Concurrency, IO/NIO, Generics, Java Mail, JDBC, JNDI, SAX, DOM, StAX, XPath, Spring core, Spring MVC, Spring Security, EJB, JMS, Facelets, JSF (PrimeFaces), Servlets, JSP, JUnit, AspectJ, json-lib, Log4J, GoF and J2EE Design Patterns; Web application servers: Jboss, Tomcat, GlassFish; Databases: MS SQL, PostgreSQL, MySQL; ORM: JPA/Hibernate (experience with Criteria API), familiar with MyBatis; Version control: Mercurial, Git; Build tools: Maven, familiar with Ant and Graddle; Web-services: JAX-WS, JAX-RS, JAXB, JAXP, Axis; Environment: IntelliJ IDEA, Eclipse. Additional skills: XML, JSON, HTML, xHTML, PHP, CSS, SQL, JavaScript (AngularJS, JQuery), AJAX, developing web sites on different CMS`s. SEO and web-marketing experience since 2006 (as hobby). Operating Systems: Ubuntu, Fedora, Windows Language Skills: English - Upper Intermediate (TOEFL iBT - 94 points) Ukrainian - native Russian - native

100% Job Success
$25.00 /hr
145 hours

Gregory Sudderth

Gregory Sudderth Agency Contractor

Experience and Enthusiasm!

United States

I am a professional programmer, with 31 years of experience. I love working on what used to be called "communications protocols" and now we call it Web2.0 EDI! I love working on REST/SOAP interfaces, but also do programming for Android/IOS, and lately have been branching out into embedded with Atmel and Microchip development boards. I also do some work with various tools (OPNet, wireshark, lsof, strace, truss, etc.) to suss out performance problems with web apps. I have a strong bias towards open source and cloud-based systems.

Associated with: Red Bear Prof. Svcs, LLC

$50.00 /hr
110 hours

Vitali H.

Vitali H.

Software Architect / Developer, Java/J2EE, Android, Web

Belarus - Tests: 1

Wide experience in software engineering. Languages: - Java (Spring, EJB, Jersey, Atmosphere, Hibernate, OpenJPA, JMS, OAuth, Morphia, Web Services (SOAP, REST), Android, GWT, JSF/JSP, Swing, etc), - HTML, CSS, XML, Javascript (jQuery, Prototype, etc), Databases: MySQL, PostgreSQL Oracle, MongoDB; SEO & User behavior tracking: Google Analytics, Yandex Metrika OS: Ubuntu, Debian, CentOS, Windows; Web servers: Apache, Nginx, Tomcat, Glassfish, Jetty; Other services & tools: SVN, Git, Red5, JasperReports, Maven, JProfiler, Zabbix, Sonar;

$20.00 /hr
22 hours

Fernando R.

Fernando R.

Ruby on Rails Developer with Strong Linux Background

United States - Tests: 3 - Portfolio: 1

Very proficient RoR Web developer with a strong Linux/Unix background. Located in Florida, USA I work on EST timezone, allowed to work legally in the USA, I can attend to meetings, receive and make calls worldwide, as my customer you will be provided with a direct line to contact me if necessary. Over 11 years of experience on the IT industry, mainly working for major 500 Fortune US companies such as Cisco Systems, LexisNexis, Sun microsystems and others. My focus is always to keep things as simple as possible and make stuff better. Relevant skills : - Ruby on Rails 3 - , Credit card systems - RSpec , Capybara ( Testing ) TDD - Memcache - C ANSI - Linux / Unix (Solaris) - Shell scripting - Unix power tools: vi,awk,sed,bash,truss,top,strace,tcpdump,iptables.. - Capistrano - Amazon EC2 and Clouding computing. - VPS (Heroku, SliceHost, DreamHost) - Git Collaboration tools and extras that we offer to our customers : - US Phone number landline and cell phone - Skype. - Outlook Calendar (Exchange server) - EST U.S timezone, Located in Florida, near by major airport (FLL) - Fluent in English, Spanish and Portuguese (Spoken and Written) Don't hesitate to contact me if you have any questions.

$33.33 /hr
157 hours

Hemanshu P.

Hemanshu P.

Expert Salesforce Developer,Integration Expert, Java,Spring,Hibernate

India - Tests: 2 - Portfolio: 7

I am having more than 4.5 years of experience in salesforce, i am expert in designing visualforce pages, apex classes, apex triggers, apex component, batch class, workflow and approval process. I have also expertise in designing salesforce site, customer portal, and integration with mailchimp ,zendex and

100% Job Success
$22.22 /hr
2,681 hours

Khang P.

Khang P.

Your happiness is our success


+ 5 years experience in Java/J2EE application development. + Database : Oracle, MySQL, PostgreSQL, DB2... + Framework : Spring, Hibernate, Struts, JSP, JSF, Vaadin... + Process : Scrum, Agile. Please find me in Elance:

$11.11 /hr
0 hours