Have you tried building any dashboards?

Yes, I have built dashboards in several projects. In my most recent role, I created a sales performance dashboard using Tableau. I began by extracting data from a SQL Server database, then performed ETL in Python to clean and aggregate the data. I designed the dashboard with key performance indicators, trend charts, and drill‑down capabilities so users could explore details. I also implemented filters for region, product, and time period, and used Tableau’s calculated fields to show year‑over‑year growth. To ensure performance, I created aggregated tables and used incremental refresh. I worked closely with the reporting team to gather requirements, iterated on the design based on their feedback, and finally published the dashboard to Tableau Server with appropriate permissions. The result was a 40% reduction in manual reporting time and increased user satisfaction. I have also built dashboards in Power BI and Looker, applying similar principles of data modeling, user experience, and performance optimization.