Sergey Kolosov
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Sergey Kolosov

Software Developer


Taganrog, Russia


I have a big experience with Linux(administration, deployment, user and kernel level programming) and can work not only as software developer, but also as linux consultant. I have done several embedded projects(ARM and embedded linux). I am interested in virtualization technologies, mostly in KVM and of course have done related projects. I have also DB knowledges(PostgreSQL especially) and interested for development distributed software in Erlang. I am inspired by learning new technologies, trying new directions, and looking forward to the new challenges and new roles. Skills: Programming languages: C, C++, Perl, Python, Lua, SQL, Assembler for x86. Technologies and frameworks: ... moreGecko, XPCOM, WxWidges, Qt, GTK+. Tools: Git, CMake GNU/Linux toolchains, KVM, QEMU. Database: PostgreSQL, MySQL. less

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Work History and Feedback

  • Aug 2015

    QT Programmer to fix and modify existing code
    Certainly one of the best freelancers I hired. Very good attitude towards work and hard working which are crucial for any freelancer to have. Highly appreciate his hard work and commitment until job is completed.
    $100.00 earned
    Fixed Price

  • May 2015 - Aug 2015

    Use Mozilla's PyXPCOM to embed Gecko rendering engine into PyGTK window
    249 hours
    $25.00 / hr
    $6,212.50 earned

  • Apr 2015

    Create C++ Prototype for embedding Gecko (XULRUNNER) with GTK+
    Great programming and communication skills!
    32 hours
    $25.00 / hr
    $791.67 earned

  • Jul 2013 - Mar 2015

    Postgresql GURU

    No feedback given

    28 hours
    $24.44 / hr
    $692.46 earned

  • Jan 2015

    Qt5 Raspberry Pi QMultimedia Audio With Pulseaudio
    Sergey did excellent work for me and took the time to ask questions and make sure it was done right. I was very happy with the work - Thanks!
    $185.00 earned
    Fixed Price

  • Apr 2014 - May 2014

    Simple Linux library for printing text
    It was a pleasure to work with Sergey. He provided exactly what I needed and even added some extra things that I mentioned on the side but where not part of the original spec. Communication, English language and availability was very good. If I have another project in this area in the future, Sergey would be my first choice.
    $340.00 earned
    Fixed Price

  • View More (9)

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Name Score (out of 5) Time to Complete
PostgreSql 8.1.3 Test 3.90 Top 10% 29 mins
Unix Test 4.60 Top 10% 21 mins
Redhat Linux 9.0 Admin Test 3.60 Top 20% 26 mins

Work History

97% Job Success
2,740 hours worked
39 jobs


More than 30 hrs/week
24 hrs response time


Phone Number: Verified

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