Vladislav Pyslaru Email & Phone Number

Chișinău, Chisinau, Md

Chișinău, Moldova

- Implemented CatBoost models for different layers of sales estimations, improved percentage error metrics of existing models by >=10% after cross validation- Detected and reduced impact of data outliers and leverage points- Conducted great share of ad-hoc researches, EDA, employed data-driven approach, devised most cost-effective solutions for many customer support issues- Developed Big Data pipelines with Sql, Python, dbt, Snowflake, Airflow, Docker, Pandas, transforming billions of data records daily within strict budget and time limits, decreased consumption of existing solutions by magnitude

Moscow, Moscow City, Russia

- Developed sales forecasting pipeline, processing entire assortment of retail chain on multiple levels weekly, using Sql, Python, Vertica, PySpark, XGBoost, statsmodels, Holt-Winters and sklearn- Authored OOP architecture, which enabled team to develop tens of highly flexible classes for data modeling employing parallel calculations within PySpark executors- Designed interactive layered geographical map for new stores sales prediction using linear models on top of PCA and on more than 400 factors- Developed major steps of adjustable price nonlinear programming optimizer with multiple strategies, using SAS, in accordance with strict SLA constraint

Rostov-On-Don, Rostov, Russia

Designed, implemented and supported C++ applications for stress-testing of corporate services and developed GUI based on Chromium Embedded Framework, with rich world of JavaScript libraries

Master'S Degree, Computer Science

Bachelor'S Degree, Theoretical And Mathematical Physics