SQL
40Databases & SQL · Data Processing
and optimize performance. My work in the banking and telecommunication sectors has allowed me to solve specific problems through data-driven approaches. - ETL Processes: I develop and implement Extract, Transform, Load (ETL) processes to streamline data management. From data collection to transformation and storage, I ensure smooth and efficient data pipelines. Technical Skills: - Python for data manipulation and analysis - SQL…
of the projects I have worked on. Projects: 1. Cohort analysis and user retention to assess engagement. Task: Assess user retention trends over 6 months in organic and paid traffic segments. My role: Cleaning and standardizing non-standard date formats; developing a cohort model in SQL with monthly offset calculations (month_offset); calculating retention KPIs and creating an interactive reporting dashboard. Tools: SQL…
using Tableau and Looker Studio, creating dashboards that reveal valuable insights and support better business decisions. I have a background in economics and over 10 years of experience working with spreadsheets, accounting, and organizing large volumes of information. I can clean, prepare, and transform data into easy-to-understand charts, KPIs, and reports. I work with Tableau, Looker Studio, Excel, Google Sheets, and basic SQL…