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Tonuja Ramesh S

Data Analyst

Kolkata, India 0+ yrs exp 71 · Very Good

About

Data Analyst with 6+ months of hands-on internship experience in SQL, Python, Power BI, and Tableau, delivering business analytics solutions, ETL/ELT pipelines, predictive models (R2=0.87), and stakeholder-focused dashboards and advanced analytical solutions across 100K+ record datasets. Skilled in EDA, regression analysis, feature engineering, data modeling, model evaluation, business intelligence reporting, and data storytelling to drive operational and product decision-making.

Skills & Expertise (41)

Python Intermediate
7.1/10
1
Years Exp
Pandas Intermediate
7.0/10
1
Years Exp
scikit-learn Intermediate
6.9/10
1
Years Exp
SQL Intermediate
6.8/10
1
Years Exp
Power BI Intermediate
6.5/10
1
Years Exp
Git Tableau Looker Studio DAX KPI Dashboards Reporting Automation Stakeholder Reporting Matplotlib Seaborn NumPy GitHub Jupyter Notebook VS Code AWS Basics English Hindi Tamil Kannada Model Evaluation EDA Regression Analysis Statistical Analysis A/B testing Predictive Modeling Statistical Modeling Data Modeling Feature Engineering Advanced Excel Data Storytelling Data Validation Data Pipelines ETL Data Warehousing Cross-Functional Collaboration MySql Postgresql

Work Experience

Data Science Intern

Labmentix Pvt. Ltd

Sep 2025 - Mar 2026

Cleaned and transformed 100,000+ records using Python (Pandas, NumPy), reducing null/duplicate inconsistencies by 35%, improving downstream model reliability and ensuring data governance and validation accuracy. Conducted EDA and statistical analysis including correlation heatmaps, outlier detection, and distribution profiling to improve model accuracy and support analytical decision-making and operational risk evaluation. Optimized SQL queries for multi-table extraction and aggregation, automating reporting workflows and reducing average query runtime by 20% across reporting pipelines. Built and evaluated 3–5 ML models using Scikit-learn, feature engineering, and cross-validation, achieving 85%+ accuracy for operational forecasting tasks. Collaborated with cross-functional teams to translated raw data into structured analytical reports and documentation supporting operational decisions, KPI dashboards, and business materials supporting operational decisions.

Data Science Intern

Indian Cyber Security Solutions (IICS) × IAER

Jul 2025 - Aug 2025

Performed data preprocessing, feature engineering, and EDA on structured datasets using Python and Pandas as part of a 120-hour intensive internship. Built and evaluated classification and regression models using Scikit-learn, assessing performance with accuracy, precision, recall, and RMSE metrics.

Education

BSc in Data Science - Institute of Advance Education and Research (IAER)

2023 - 2026 · Afghanistan

Certifications

No certifications added yet

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Profile Score Breakdown

📷 Photo 0/10
📄 Resume 10/10
💼 Job Title 10/10
✍️ Bio 10/10
🛠️ Skills 20/20
🎓 Education 10/10
⏱️ Experience 6/15
💰 Rate 0/5
🏆 Certs 0/5
Verified 5/5
Total Score 71/100

Profile Overview

Member sinceMay 2026

Availability Details

Relocation

Open to Relocation

Skills (41)

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