Marion Tasiime

I’m a data analyst who combines strong data management with reconciliation discipline, customer-focused service, and clear compliance thinking. I’m structured and detail-oriented, using critical thinking to deliver accurate, timely outcomes while keeping a calm, professional approach.

As a data analyst intern at Codveda Technologies, I designed and optimized SQL queries to clean and aggregate retail and pizza sales data, improving reporting accuracy by 15%. I built complex joins and CASE statements to support customer segmentation, then used Python and pandas for data cleaning, duplicate removal, missing-value handling, and standardization of inconsistent formats. I also performed exploratory analysis and identified trends using pandas, Python, and matplotlib, and presented insights through interactive Power BI and Excel dashboards.

At Absa Bank Uganda Limited, I worked as a cash management and reconciliation apprentice, reconciling high-volume accounts (including escrow and mobile wallet-related verifications) to ensure accuracy and timely reporting. I prepared SLA-compliant reports to support financial decision-making and resolved 100% of customer complaints within SLA, typically within 24 hours, while processing wallet and escrow transactions at a zero-error rate. I partnered with the digital transformation team to automate GL processes, reducing manual intervention, and I logged and escalated reconciliation issues with resolution in agreed timelines.

I’m motivated by practical results—minimizing revenue leakage, reducing fraud risk through monthly checks, and strengthening operational control effectiveness. I’m also comfortable collaborating across teams, training colleagues for continuity, and ensuring policies and compliance standards are consistently met.