
Devratan
Excel and Power BI Analyst for Data Cleaning and Dashboards
Skills

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Portfolio
Work experience
Data Scientist Intern
Celebal Technologies
May 2026 - Present • 6 mos
Developed machine learning models using Python, Pandas, NumPy, and Scikit-learn. Performed data cleaning, preprocessing, feature engineering, and exploratory data analysis (EDA). Built regression and classification models to solve predictive analytics problems and evaluated them using MAE, MSE, RMSE, and R² Score. Created visualizations using Matplotlib and maintained documentation on GitHub.
Operations Executive
Teleperformance • Full-time
Jan 2024 - Mar 2025 • 1 yr 2 mos
Managed backend operations supporting Flipkart while ensuring SLA compliance and operational accuracy. Monitored workflow performance, KPIs, and operational reports. Coordinated issue resolution across multiple teams and supported process improvement initiatives to reduce operational delays.