Polina Gridneva Email & Phone Number

London, Gb

London Area, United Kingdom

Performed opportunity sizing in product domain to support setting ambitious financial targets and OKRs. Managed experimentation in the team, conducted mobile and web funnels deep-dives, customer base segmentation (RFM). Supported strategic decision-making for the UK market

Moscow, Russia

Worked for #1 fintech in Eastern Europe with 35M customers:Provided behavioural analytics for Tinkoff mobile app – digital banking with 25M MAUs. Built and constantly improved mobile app metrics dashboards (Amplitude) to comprehensively describe user engagement: activation, feature adoption, retention rates, funnels, cohort analysis, behavioural clustering.Being deeply involved in ongoing competitor analysis, proposed new engaging features to mobile UX and conducted A/B experiments that led to 10% increase in KPI of Retention. Introduced User Paths Analysis – interactive models using Python graphs libraries that boosted Product DevelopmentAutomated and maintained financial reports on bank products including savings, joint accounts, debit and credit cards (SQL, Tableau).

Moscow, Russia

Developed ML-prediction model for solar indexes F10.7 and F30, investigating correlations between solar activity proxies and enhancing forecasting through auxiliary data. The 1-day prediction model served the Space Safety Program of the European Space Agency.Created a complete data catalogue for several cycles of solar activity, extracting and processing data from satellite sensors and ground telescopes

Moscow, Russia

Risk Management department:Introduced data pipelines and streamlined processes through Python automation scripts for variation analysis calculations and reporting

Moscow, Moscow City, Russia

Wireless communications lab: developing ML-models (adaptive equalizers) to compensate for signal distortions in HF channels

Bachelor Of Science - Bs, Computer Science

Master Of Science - Ms, Information Technology