Tulasi Lakshmi Narasimha Raya
Data Analyst • Nellore, Andhra Pradesh, India • t*********************@gmail.com • 939****613 • drivetube.ai/•••••
Professional Summary
Data Analyst with 0 years of experience applying Python, SQL, and machine learning techniques to build data pipelines, interactive dashboards, and predictive models. Hands-on experience in data cleaning, exploratory analysis, Power BI reporting, and end-to-end ML pipelines using Scikit-learn. Seeking an entry-level analyst role to convert data into actionable business insights.
Technical Skills
Programming Languages: Python,R²
Frameworks and Libraries: Pandas,NumPy,Scikit-learn,Matplotlib
Databases: SQL,MySQL,SQL query design
Data and Analytics: Data preprocessing,Feature engineering,Linear Regression,Support Vector Regression,Decision Trees,Random Forest,Gradient Boosting,Power BI,Excel
Tools and Methodologies: Jupyter Notebook,Git,GitHub,DAX
Model Evaluation & Validation: Cross-validation,GridSearchCV,MAE,RMSE,Error analysis
Work Experience
OdinSchool
Data Science Professional Intern
April 2025 – October 2025
EdTech/technical training provider — supported course analytics, student outcome analysis, dashboard reporting and prototype ML models.
Tech Stack: Python, Pandas, NumPy, SQL, MySQL, Power BI, Scikit-learn, Jupyter Notebook, DAX, GridSearchCV
- Performed exploratory data analysis and feature discovery on course and student datasets using Python (Pandas, NumPy) and SQL to identify missingness, distributions, and key predictors for modeling.
- Implemented data cleaning and preprocessing pipelines (imputation, encoding, scaling) to standardize datasets for modeling and reporting, improving downstream model readiness and reproducibility.
- Built interactive Power BI dashboards to visualize learning metrics and engagement KPIs; standardized DAX measures and report layouts to ensure consistent reporting across pages.
- Developed end-to-end ML prototypes with Scikit-learn using ColumnTransformer pipelines and feature engineering; trained and compared multiple regressors to recommend candidate production models.
- Tuned model hyperparameters with GridSearchCV and cross-validation, conducted model evaluation (R², MAE, RMSE) and performed segment-level error analysis to surface data sparsity and performance gaps.
- Authored SQL queries and reproducible Jupyter notebooks to automate data extracts and document analysis steps; collaborated with mentors to translate business questions into analytics deliverables.
Projects
Coffee Quality Analysis using Power BI
Tools Used: Power BI, DAX, Data cleaning, Correlation analysis
- Analyzed 207 Arabica coffee samples across 30+ attributes from the Coffee Quality Institute dataset to identify drivers of cupping quality.
- Built a 6-page interactive Power BI report with synchronized slicers, KPI cards, and visualizations to explore quality determinants by origin, processing method, and defects.
- Performed correlation analysis and data corrections; standardized category labels and consolidated DAX measures to improve report reliability and consistency.
Laptop Price Prediction using Machine Learning
Tools Used: Python, Scikit-learn, ColumnTransformer, Feature engineering, Model tuning
- Built an end-to-end ML pipeline to predict laptop prices from 17 features across 1,303 listings, including handling missing values and encoding categorical variables.
- Engineered features (PPI, storage splits) and used Scikit-learn ColumnTransformer to build a reproducible preprocessing pipeline.
- Trained and benchmarked five regression models; tuned Gradient Boosting with GridSearchCV (5-fold) to achieve improved test R² and lower MAE/RMSE; performed segment-level error analysis to identify performance drops on premium-tier laptops.
Education
Narayana Engineering College, Nellore
Bachelor of Technology (Computer Science Engineering – Data Science) • Nellore, Andhra Pradesh, India • 2023 – 2027
Certifications
Data Science Professional Certificate — OdinSchool
Generative AI, Deep Learning & Language Models — EduSkills Academy
AWS Academy Data Engineering — AWS Academy Graduate — AWS Academy
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