Marek Kwiecień
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Marek Kwiecień

Lean Java Developer (J2EE/JEE, Spring, Struts, Seam, Liferay, Mule)


Wroclaw, Poland


Java software developer with strong background in building large enterprise systems for different kind of industries. I specialize in development of web applications and I enjoy very much using lean and agile practices. I am fluent in: Java, J2EE/JEE, Liferay (5, 6, 7), Struts, Spring (also Spring Boot), Seam, Hibernate, JPA and related. I also have strong experience in Mule ESB and SOA architecture implementation. I am familiar with UNIX systems administration and maintenance. What I can build I can also deploy. In every project I have also dealt with different Data Bases to mention only the best know like MySql, Postgres and Oracle. I know ... moreSQL and procedural languages inside the mentioned database systems. I also have a lot of experience with No-SQL databases like Mongo, Cassandra and CouchDB. See my portfolio for detailed info on the projects I participated in. less

Marek Kwiecień has added 17 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Oct 2012 - Dec 2012

    Mule Developer

    No feedback given

    48 hours
    $27.78 / hr
    $1,328.72 earned

  • Sep 2009 - Mar 2010

    Java Based social networking site

    No feedback given

    128 hours
    $16.67 / hr
    $2,130.96 earned

  • Jul 2009 - Sep 2009

    Java Based social networking site
    Excellent developer, the best ever. I would always have him on my projects.
    229 hours
    $11.11 / hr
    $2,542.30 earned

Marek Kwiecień has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
JAVA Programming Skills Test (Hands-on programming skills) 3.45 Above Average 101 mins
Networking Concepts Test 4.50 Top 10% 26 mins
JavaScript 1.3 Test 4.25 Top 10% 36 mins
Java Test 4.10 Top 10% 35 mins
Data Structures Test 3.10 Top 30% 36 mins
Programming with C# Test 3.10 Top 30% 32 mins
SQL Test 3.10 Top 20% 33 mins
Programming with C Test 3.50 Top 20% 36 mins
Programming with C++ Test 3.00 Top 30% 36 mins
Software Testing Test 3.00 Top 30% 27 mins
Upwork Readiness Test for Independent Contractors and Company Managers 4.40 Above Average 37 mins
U.S. English Basic Skills Test 3.75 Above Average 29 mins

Work History

100% Job Success
965 hours worked
20 jobs


More than 30 hrs/week

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