Drop Here

Carl Y.

Senior Software Engineer - Java/J2EE, PHP, C/C++, C#/ASP.NET


Beijing, China


I have experienced with 12+ years in the software development. Over the last 8 years, I have rich experience that developed Banking, ERP and CRM systems, and accounting software like GL (General Ledger) using Java (Applet, RMI, AWT, Swing, JDBC, Socket, NIO, Thread), J2EE (Enterprise JavaBeans 2.0 & 3.0, Web Service, Java Server Pages, JavaBeans), SOA (Service Oriented Architecture), Websphere Portal & Portlet and databases (MS-SQL, ORACLE, MySQL) for big-scale companies, and a wide range of websites using HTML, DHTML, PHP and ASP.NET for small and medium companies. At that time, I worked as a manager or lead developer. My major part is ... moreEnterprise and Desktop programming using Java, J2EE (Enterprise Java Beans 2.0 & 3.0, Web Services, Java Server Pages) and C/C++ & VC++. My minor part is web programming using PHP and ASP.NET. I have rich experience in following areas: C/C++, VC++, ASP.NET, C#, SQL, UML, Software & Data architect, Groovy/Grails, RESTful web service, Javascript, ActionScript, Ajax, OOP, design pattern, software design, testing and integrating, web scrapping, and system administration. And also, I have strong problem solving skill, mathematics and algorithm knowledge. I am versed in following areas: - Web & Application Servers: Websphere Application Server, Websphere Portal Server, APM, Apache Tomcat, JBoss, IIS, XMPP, WAMP. - Java/J2EE frameworks: Struts, Spring, Hibernate, Play, Scala and JSF. - PHP frameworks: Zend, Codeigniter, CakePHP, Magento, Zoomla and Wordpress. - Javascript frameworks: jQuery, Raphael, D3. - Databases: Oracle, MS-SQL, MySQL, NoSQL, SQLite, KyotoCabinet, MongoDB, PostgreSQL. - Open Projects: OpenCV, OpenERP, OpenTaps, WebERP, KonaKart. - Tools: Rational Application Developer (RAD), Eclipse, VS2010, NetBeans, Rational Rose, Zend Studio, NuSphere, Adobe Flex. - Version Control Systems: TortoiseSVN, TortoiseHg (Mercurial), CVS, Git - API Integration: Paypal, Facebook, LinkedIn, Twitter, Amazon Web Service. - Miscellaneous: IIS ISAPI extension & filter, Apache module, Microsoft Office Plug-Ins, JUnit. I am seeking clients who require my experiences and skills for his or her business. less

Carl Y. has added 13 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Mar 2013

    OpenERP consulting
    2 hours
    $33.33 / hr
    $66.66 earned

  • Dec 2012

    Minecarft Expert Install Mods
    Carl did a good job will use him again
    2 hours
    $33.33 / hr
    $66.66 earned

  • Dec 2012

    4 hours
    $33.33 / hr
    $133.32 earned

  • Nov 2012 - Dec 2012

    Small C++ Project
    Carl is very nice. The project was completed successfully and quickly. I would definitely recommend him.
    10 hours
    $33.33 / hr
    $333.30 earned

  • Nov 2012 - Dec 2012

    Simple Java Management System Project
    Carl was great to work with, always available and willing to complete the task to my liking. Very fast responses as well. I recommend!
    8 hours
    $33.33 / hr
    $266.64 earned

  • Oct 2012 - Nov 2012

    Java Developer Guru
    Carl is a great developer. This project was a bit larger than he anticipated, though he mostly kept to his original estimate and kept at it until he got it right. The installer app has been completed successfully to my satisfaction... I'm very happy to have it. I look forward to working with Carl again.
    20 hours
    $33.33 / hr
    $666.60 earned

  • View More (4)

Carl Y. has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
MySQL 5.0 Test 5.00 1st Place! 26 mins
Mac OS X 10.5 Test 5.00 1st Place! 10 mins
English Spelling Test (U.S. Version) 5.00 1st Place! 8 mins
Objective C Test 5.00 1st Place! 11 mins
Magento eCommerce Test 5.00 1st Place! 8 mins
JavaScript 1.3 Test 4.90 Top 10% 11 mins
Advanced Java Test 3.50 Top 10% 26 mins
HTML 4.01 Test 4.60 Top 10% 8 mins
Enterprise Java Beans (EJB) 2.0 Test 3.00 Top 20% 22 mins
WordPress 2.8 Test 4.00 Top 10% 4 mins
Java Test 4.25 Top 10% 9 mins
CSS 3 Test 4.40 Top 10% 14 mins
Joomla 1.5 Test 3.90 Top 20% 9 mins
ASP.Net 3.5 using C# Test 3.00 Top 20% 32 mins

Work History

906 hours worked
20 jobs


More than 30 hrs/week


Phone Number: Verified


Search for others