Vasilii Filin

- Responsible for the Analytics, ETL and ML systems of the sector “Reviews and UGC”; - Created NLP Classifier of users’ complaints, feedbacks, and reviews (BERT-based). Achieved very high avg macro f1; - Created Metrics Tree, designed and analyzed A/B experiments, conducted researches, created events layout for developers, implemented ETL processes, on-boarded and mentored Middle Specialist, led cross-product projects, shared expertise on company’s meet-ups, created dashboards.

- Designed an alerting system that detected significant deviations in metrics and sent alerts, saving the business unit’s income by identifying critical issues; - Boosted profit of unit’s main products by a shift to a Dynamic Pricing System; - Built ML model to forecast company’s future sales, achieving a MAPE of 5% for a 1-month sales period; - Developed a Slack-bot that provided statistics tailored to the top-management’s needs; - Mentored Interns and Juniors.

Joined the project by Aeroflot (Russian leading airlines) until its completion: -Participated in the migration from company’s obsolete IT system to SAP-HANA; -Participated in Implementation and Maintenance of Analytical Systems (SAP BW/BO); -Created analytical reports for Aeroflot's top management using SAP BW/BO, providing critical insights to support decision-making.

Advanced Training: Digital Modelling and Supercomputer Technologies