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Andrei Z.

Algorithm and Machine Learning Engineer


Minsk, Belarus


I have extensive experience in machine learning and data mining, including search engines, natural language processing, crowdsourcing and regression analysis. As part of my PhD study I also enjoy computer vision, especially what concerns face and emotion recognition. Note: I already have full-time job, so I can accept only short-term projects that I can deliver with high quality in a reasonable time.

Work History and Feedback

  • Jul 2011 - Feb 2012

    Twitter opinion mining
    Several month full time contract to complete a very strategic job. Andrei is a very reliable guys with many competence. Thank you!
    9 hours
    $20.00 / hr
    $25,046.60 earned

  • Jul 2011 - Sep 2011

    Natural Language Processing / Semantic Search expert
    What can I say about Andrei, he is technically smart, hard working and a great person to work with. He helped answered my questions and gave suggestion even before the project was awarded to him. He worked with me on every aspect from Requirements to Development and Deployment. He has great communication skills and responded to emails with few hours. We will be hiring Andrei again for our phase two requirements. I highly recommend Andrei, for any NLP or Java related projects. He is a whiz @ using GATE framework to make sense out of unstructured data.
    $350.00 earned
    Fixed Price

  • May 2011 - Jul 2011

    Need java-based location detection solution...
    Andrei, awesome job once again. Thanks.
    $500.00 earned
    Fixed Price

  • May 2011

    Short term Java/Database project
    Andrei is an excellent developer all the way. Very satisfied with his work, responsiveness and on-time delivery. Would happily use his skills again if needed.
    $400.00 earned
    Fixed Price

Andrei Z. has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Digital Signal Processing Test 2.60 Above Average 35 mins
Python 2.x Test 3.75 Above Average 32 mins
Java Test 3.50 Top 20% 38 mins
JavaScript 1.3 Test 3.40 Above Average 36 mins
Programming with C++ Test 2.75 Above Average 40 mins
Programming with C Test 2.90 Above Average 37 mins
XHTML 1.0 Test 3.75 Above Average 32 mins

Work History

9 hours worked
8 jobs


Not available until 12/01/2015
24 hrs response time

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