Valentin Poroxnenko
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Valentin Poroxnenko

Java and Android development


Saint Petersburg, Russia


I have been working as a key developer and team lead at the java or android projects for more than 6 years. Most of these projects were enterprise applications. Team leading and project management experience. Good knowledge of team working rules and tools (version control, bugtracking, time management systems, etc.) Development  of multi-tier applications based on JBoss, Weblogic, WebSphere, Tomcat application/web servers. EJB 2, EJB3, servlets, Web services(SOAP, REST, axis2) using for middle tier. AJAX(GWT, JSF with IceFaces), JSP as view tier. Hibernate and JPA ORM at the MySQL, Firebird,Oracle db's. Good design patterns knowlege GoF, Java ... moreEE patterns etc. less

Valentin Poroxnenko has added 4 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Nov 2011 - Dec 2011

    java CalDav developer
    $100.00 earned
    Fixed Price

  • Mar 2010 - Jun 2010

    Expert GWT Developer
    Great provider! We're happy with the work Valentine did for us. We will keep him in mind for our next GWT project.
    27 hours
    $25.00 / hr
    $683.25 earned

  • Mar 2010 - Jun 2010

    Java Based / JSP EDI Parser Bean
    Will definitely use again.
    3 hours
    $27.78 / hr
    $92.51 earned

  • Sep 2009 - Jun 2010

    Alfresco (DMS) - Developer and Support

    No feedback given

    $225.00 earned
    Fixed Price

  • Feb 2010

    JAVA Memory Leak Issue
    Valentin worked quickly to resolve our problem...we're working on sending him another project right away...
    $377.78 earned
    Fixed Price

  • Nov 2009 - Dec 2009

    Wordpress Multi-User Compatible Plugin to Create Landing Pages
    $35.00 earned
    Fixed Price

  • View More (6)

Valentin Poroxnenko has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Enterprise Java Beans (EJB) 2.0 Test 3.00 Top 20% 30 mins
JDBC 2.1 Test 3.75 Top 20% 33 mins
Advanced Java Test 3.00 Top 20% 39 mins
Ruby on Rails Test v1 (Old) 3.10 Below Average 32 mins
JSP 2.0 Test 3.00 Above Average 22 mins
SQL Test 3.00 Top 20% 30 mins
Java Test 3.00 Top 30% 40 mins
MySQL 5.0 Test 2.60 Below Average 37 mins
Management Skills Test 2.60 Above Average 33 mins
Upwork Readiness Test for Independent Contractors and Company Managers 4.80 Top 30% 8 mins
HTML 4.01 Test 3.10 Above Average 30 mins
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Work History

95% Job Success
1,154 hours worked
70 jobs


More than 30 hrs/week

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