Nikita Patel

Data Analyst @UnitedHealth Group

US

Developed machine learning-based forecasting model using Scikit-learn (regression analysis, feature engineering), improving quarterly sales predictions by 15%, driving more accurate financial planning and resource allocation.• Built Tableau dashboards with OLAP cubes, dimensional modeling, and real-time analytics to monitor supply chain metrics, cutting delivery times by 10% through data-driven optimizations.• Optimized data processing workflows on AWS Redshift, implementing indexing, partitioning, and query optimization techniques to handle over 1 million records, reducing reporting time from 8 hours to 1 hour.• Performed customer retention analysis using logistic regression in R and data normalization, identifying key retention drivers and improving annual subscription renewal rates by 12%.• Automated Excel-based expense tracking tool using VBA macros, pivot tables, and dynamic charts, saving 8 hours monthly and improving project budget tracking accuracy across cross-functional teams.• Led cloud integration of Google BigQuery with internal CRM via API, streamlining data warehousing solutions and reducing retrieval times by 20% for large-scale analytics and reporting workflows.• Conducted cost optimization analysis using Python (Pandas) and statistical modeling, achieving in annual savings by improving vendor selection and operational workflows.• Trained 3 junior analysts in Power BI with DAX queries, time-series analysis, and data visualization best practices, resulting in a 25% increase in team reporting efficiency.