Ex-Yandex search quality engineer. Currently, designing data processing backends at Avast! antivirus virus laboratory. My last 5 years I spent working on data science problems in the russian's most popular search portal Yandex. I have experience in such programming languages and technologies as C/C++, Python, Bourne shell, *NIX, Java, Hadoop, in the past Delphi, PHP, MySQL, HTML, CSS, Javascript.