Hi, I'm Alejandro Vargas

A

About

Data enthusiast passionate about leveraging data to drive innovative and impactful business solutions. Adept in data collection, preparation, analysis, visualization and modeling using leading Python and R libraries. Quick learner with a strong aptitude for problem-solving, eager to contribute to a dynamic and collaborative environment.

Seeking a challenging role in Data where I can leverage my skills to drive professional growth, gain valuable experiences and achieve personal development.

Projects

Recommendation Engine Demo
E-commerce Recommendation Engine
Accomplishments

This project showcases the end-to-end implementation of a deep learning-based recommendation system built on the top of TensorFlow Recommenders. It leverages user interaction data from an e-commerce platform to model user preferences, achieving an average accuracy of 55% in predicting the correct product within the top 50 recommendations.

Tools: TensorFlow, Optuna, Numpy, Pandas, Plotly

Sales TS Forecasting
Sales Time Series Forecasting with R
Accomplishments

Forecasted over 3,500 time series for various products across multiple stores, applying advanced forecasting models such as ARIMA and STL+ETS. Forecasted data was integrated into an interactive dashboard, enabling realtime visualization and data-driven decision-making for enhanced inventory and sales strategy.

Tools: R, Fable, tidyverse, furrr

Sales TS Forecasting
AltScore Competition
Accomplishments

Data collection from different sources, data cleaning, feature engineering and aggregations of provided and external data. Training and evaluation of ensemble tree-based model with posterior inspection and explanation. Reached top 5 in the public leaderboard.

Tools: Polars, XGBoost, LightGBM, CatBoost, SHAP

Jobs Hunting App
Jobs Hunting App
Accomplishments

Looking for your next job shouldn’t feel like a full-time job. This app automates the search process by scraping listings from top job sites, storing them in a database and presenting them in a user-friendly interface. Say goodbye to duplicated applications and focus on the best opportunities!

Tools: Zendriver, Scrapy, PostgresSQL, Streamlit

POSApp
POSApp (Point of Sale App)
Accomplishments

Transform your business operations with a powerful and intuitive Point of Sale system tailored for small businesses. Built with PyQt6 for Windows, this all-in-one solution simplifies inventory management, streamlines transactions and offers actionable sales insights.

Tools: Python, SQLAlchemy, PyQt6, PyInstaller

PlotGround Tool
PlotGround Tool
Accomplishments

Explore the simplicity and versatility of PlotGround, a Python-based tool designed for effortless data visualization. With an intuitive Tkinter interface and the power of Matplotlib, this application allows you to create stunning 2D plots and captivating 3D surface graphs. Perfect for students, researchers and data enthusiasts.

Tools: Python, Matplotlib, Tkinter

Notebooks
Notebooks
Accomplishments

Kaggle, celebrated as a hub for data science innovation, is home to a vibrant community of experts and enthusiasts pushing the boundaries of AI and analytics through collaboration and knowledge sharing. Explore my collection of notebooks!

Tools: Python, R, Scikit-learn, Transformers, PyTorch, XGBoost, LightGBM, CatBoost

Tech Stack

Languages

Python
R
JavaScript
LaTex

Utility

Anaconda
Docker
Jupyter
Git
HTML5
CSS3
Selenium
Scrapy

Database

MySQL
PostgresSQL
SQLAlchemy
MongoDB

Machine Learning

Scikit-learn
PyTorch
TensorFlow
Keras

Data Analysis

Numpy
Pandas
SciPy
Tidyverse
Tableau
MS Excel

Big Data

PySpark
Polars
Apache Airflow

Visualization

Matplotlib
Plotly
ggplot2
Streamlit
Shiny

Education

Faculty of Exact, Physical and Natural Sciences

San Juan, Argentina (2016-2023)

Degree: Bachelor of Geophysics
Overall Score: 8.68/10

    Relevant Courseworks:

    • Linear Algebra
    • Statistics
    • Calculus 1-3
    • Data Analysis
    • Programming
    • GIS tools and Geospatial Data Analysis

Certificates

Contact