Andrei Z.

Algorithm and Machine Learning Engineer

Minsk, Belarus



What's the difference?

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 & Feedback

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 hrs @ $20.00/hr
Earned $25,047

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.”
Fixed Price $350

Need java-based location detection solution...

“Andrei, awesome job once again. Thanks.”
Fixed Price $500

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.”
Fixed Price $400
Tests Taken
Name Percentile Score

Digital Signal Processing Test


Java Test


JavaScript 1.3 Test


Programming with C Test


Programming with C++ Test


Python 2.x Test


XHTML 1.0 Test