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Petr Polezhaev

Bis 2022, Middle Data Scientist, VK (Mail.RU)
Munich, Deutschland

Fähigkeiten und Kenntnisse

Data Science
Data Analysis
Software Development
Machine Learning
Python
C#
C++
Feature engineering
Data Wrangling
Classification models
Regression models
Multi-Armed Bandits
Clustering
A/B-tests
MLOps
Object Oriented Programming
Carbon
Grafana
SOLID
Design-Patterns
UML
Regular Expression
Redis
SQL
MySQL
HTML
XML
CSS
ClickHouse
Docker
OpenNebula
WMWare Workstation
numpy
scipy
pandas
matplotlib
seaborn
scikit-learn
catboost
Keras
Git
Jira
Recommender Systems
Recommendation Systems
Linux
Bash

Werdegang

Berufserfahrung von Petr Polezhaev

  • 1 Jahr und 11 Monate, Juni 2020 - Apr. 2022

    Middle Data Scientist

    VK (Mail.RU)

    1. Designed and implemented components for recommender system, including: API service to deliver recommended offers for mobile app users; data processing pipelines, models, monitoring, client API and models 2. Created a machine learning model for customer segmentation and an offer selection model for recommender system. The models increased our clients ARPU up to 23% 3. Conducted A/B-tests, which confirmed efficiency of the used approach for offer recommendations

  • 12 Jahre und 5 Monate, Jan. 2008 - Mai 2020

    Researcher of Cloud Computing laboratory, Senior Lecturer

    Orenburg State University

    1. Research: - Created regression models to estimate the difficulty of a specific curriculum item for students of an e-learning course - Created meta-heuristic algorithms for scheduling virtual machines and computational units - Developed an algorithm for efficient automatic creation of virtual machine disk images, created a design of the whole system and developed an integration layer with IaaS providers 2. Taught courses in machine learning, software development and computer security

  • 2 Monate, Juli 2007 - Aug. 2007

    Software Engineer

    Intel Corporation

    Extended existing multi-platform CI/CD pipeline for code coverage analysis, detecting memory and threading problems, which reduced the number of bugs in the Intel software product.

Ausbildung von Petr Polezhaev

  • 3 Monate, Okt. 2015 - Dez. 2015

    Computer Security

    Orenburg State University

    Diploma of professional development in computer security.

  • 3 Jahre, Aug. 2008 - Juli 2011

    Mathematical simulation, numeral methods and software

    Orenburg State University

    A post-graduate course, PhD-student

  • 4 Jahre und 11 Monate, Sep. 2003 - Juli 2008

    Mathematical maintenance and administering of information systems

    Orenburg State University

    Qualification: mathematician-programmer, GPA 5.00

Sprachen

  • Russian

    Muttersprache

  • Englisch

    Fließend

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