Mathias Berg

• Developed and refined IBM Cognos Analytics reports and dashboards to address BI service requests, ensuring stakeholders received accurate, timely insights.• Optimized underlying query logic to improve report run times and system performance.• Utilized SQL in dBeaver to validate data integrity, identify discrepancies, and troubleshoot issues at the source.• Worked closely with cross-functional teams to perform thorough data quality assessments, ensuring the reliability of the Data Warehouse for critical bu