Darina Gazizova - CV Data Analyst / BI Analyst / Analyst

Data Analyst | TechnoGroup, Sales Analysis Department Jul 2025 – May 2026 The market-leading manufacturer of high-tech climate control equipment. • Automated key reports by migrating from Excel to Power BI, reducing manual data preparation time by 60%. • Engineered ETL pipelines using Python, SQL, and DAX to consolidate data from different sources, reducing report generation time from 1 day to 1 hour. • Created a sales funnel dashboard in Power BI and Python with YoY/MoM comparisons that identified bottlenecks and increased deal conversion rates. • Developed predictive revenue forecasting models for deals and shipments, enabling top management to evaluate risks and adjust sales plans. • Designed a KPI-driven bonus calculation model for the project team, increasing data transparency of performance metrics. • Audited construction project data to detect and resolve anomalies, improving the reliability of management reporting. • Provided top management with up-to-date metrics (Revenue, Margin, EBITDA) to support data-driven decisions. Data Analyst | PEK, Commercial Department Jul 2024 – Jun 2025 An international transport and logistics holding company. • Prepared data for analysis using SQL and OLAP cubes; optimized ETL processes (Python, SQL, MDX), saving 40% of preparation time. • Built management reports and dashboards in Power BI; created data presentations for top management in PowerPoint. • Developed a comprehensive sales dashboard based on 3 years of historical data to visualize sales dynamics, funnels, and sales sources, identifying problem stages and increasing conversion rates. • Analyzed key business metrics (KPIs, Revenue, LTV, ROI) and customer metrics (acquisition, retention, churn rate), as well as tracked user movement between sales channels. • Designed customer surveys and processed responses using Power Query and Python to extract actionable insights. • Implemented RFM analysis, grouping customers into 12 distinct behavioral segments to personalize promotional offers. • Evaluated marketing campaigns across 20,000 traffic routes to optimize the budget and stop ineffective campaigns before scaling. Analyst / Research Associate | GPNTB (National Scientific & Technical Library) Jan 2016 – Jun 2024 Scientific and analytical activities • Prepared and cleaned data for analysis, generated reports in Excel and PowerPoint, worked with internal databases and scientific citation indexes (Web of Science, Scopus) to deliver insights to executive management. • Maintained data quality for researcher performance metrics and automated data preparation, significantly reducing manual workloads. • Developed technical and methodological documentation for information-analytical systems. • Proposed and implemented additional new metrics to evaluate researcher performance more objectively, with results published in research papers, and presented at conferences. Publication: Discipline-specific bibliometric analysis: Quality and performance indexes.  Technical Consultant / Junior Analyst | CentorIS (software development) Apr 2013 – Sep 2015 Supported software development and implementation. • Created custom reports in iReports/Oracle BI Publisher and configured forms using IntelliJ IDEA/JetBrains MPS. • Conducted system testing, documented bugs, and managed task tracking within Jira and Confluence. • Developed project documentation, user guides, and training materials to assist clients with product adoption. • Delivered user training sessions and product presentations to corporate clients.

Saint Petersburg State University, Institute of Earth Sciences, Master of Science in Geology, 2011

Hard Skills: SQL (PostgreSQL, MS SQL Server), Python, Power BI, DAX, Tableau, Redash, MS Excel (Power Query, Power Pivot, OLAP), PowerPoint, Git, Jira, Confluence. Business & Analytical Skills: Financial Metrics (Revenue, Margin, EBITDA), KPIs Tracking, RFM Segmentation, Data Auditing, Customer Surveys. Soft Skills: Analytical Thinking, Process Optimization, Cross-Functional Collaboration, Presentation Skills. Languages: English (B2), Russian (Native).

Английский

CERTIFICATES
• Data Analyst Course | Karpov.courses | 2024
• Advanced Python Programming | IQ Option | 2023

GitHub: https://darina6688.github.io/#