Power BI Developer

Cognizant Technology Solutions
July 2021 – July 2024

• Designed and developed interactive Power BI dashboards using charts, KPIs, slicers, and filters to deliver actionable business insights.

• Built and optimized data models by defining relationships between fact and dimension tables and creating DAX measures for business KPIs.

• Connected and integrated data from multiple sources including SQL Server, Salesforce, Oracle, and SharePoint into Power BI reports.

• Performed data cleaning, transformation, and shaping using Power Query (M language) to improve data quality and reduce refresh issues.

• Implemented Row-Level Security (RLS) to ensure secure, role-based access to sensitive data for different business users.

• Migrated dashboards from Qlik to Power BI by analyzing existing logic, rebuilding visuals, and validating results with source systems.

• Published reports to Power BI Service and scheduled automated data refreshes to ensure up-to-date and reliable reporting.

• Conducted end-to-end testing of reports to ensure accuracy, performance, and business logic consistency before release.

• Created technical documentation and user guides to support report usage and reduce dependency on development teams.

• Monitored report performance, refresh failures, and access issues, and provided quick fixes to ensure smooth user experience.