Hi! I'm Jetsael 👋
I'm a Data Science Trainee with a background in communication, currently focused on building data-driven solutions using Python and machine learning.
I recently completed a professional training program in Data Science & Machine Learning (Oracle Next Education), where I developed projects involving data analysis, predictive modeling, and ETL processes.
- Build and evaluate machine learning models (classification & regression)
- Perform data cleaning, EDA, and feature engineering
- Work with real-world datasets to generate actionable insights
- Communicate results clearly through visualizations and reports
- Predictive modeling (churn, classification problems)
- Model evaluation (ROC-AUC, Precision, Recall, F1)
- End-to-end data workflows (ETL → modeling → insights)
- Improving deployment and reproducibility of ML projects
📊 Telecom X – Churn Prediction
- Built classification models (Decision Tree, Random Forest) to predict customer churn
- Optimized models with GridSearchCV and evaluated using key metrics
📈 Alura Store – Sales Analysis
- Analyzed sales performance across multiple branches using Pandas
- Generated insights for business decision-making through visualizations
Before transitioning into tech, I worked in media and content, developing strong skills in:
- Research & analysis
- Data interpretation
- Communication of complex information
Now I combine that with data science to turn data into clear, useful insights.
- Data Science / Data Analyst entry-level roles
- Collaborative projects involving data & ML
- Opportunities to grow in real-world environments
Let’s build something meaningful with data 🚀
🔹 Telecom X – Churn Prediction
https://github.com/JetsaelVillegasMendoza/telecom_x_parte_2
→ End-to-end ML project: data cleaning, modeling, evaluation
🔹 Alura Store – Sales Analysis
https://github.com/JetsaelVillegasMendoza/alura-store-challenge
→ Data analysis project focused on business insights and visualization
🔹 YolliCalli – E-commerce Platform
https://github.com/DhyanaIxchelVerjanVargas/Proyecto-YolliCalli
→ Front-end + product module implementation
- Advanced model optimization (GridSearchCV, tuning strategies)
- Improving ML pipelines and reproducibility
- Data storytelling for decision-making
I transitioned from media & storytelling → data science,
so I don’t just analyze data… I make it understandable.