Case Studies

The story behind each project: what the problem was, how I approached it, and what came out of it.

• 
  Data Science

  Football ELO Dashboard

  25 years of club ELO ratings, five chart types generated on demand by a plotting microservice, and a GPT-4o button that explains what each chart shows.

  • Python
  • Flask
  • pandas
• 
  Web Development

  Excel 365 Course Platform

  Instead of renting a course platform I built one: auth and storage on Supabase, checkout on Stripe, an admin panel to review student workbooks, and modules written as React components.

  • Flask
  • Supabase
  • Stripe
• 
  Web Development

  Brisa Sites

  Six vertical landing pages, a bilingual ES/EN toggle, two regional price lists and a WhatsApp-first funnel — the business side of building websites.

  • Next.js
  • HTML/CSS
  • SEO
• 
  Data Science

  Sonic Surprise & Playlists Qualifier

  What I learned shipping two tiny apps on top of third-party APIs — including what happens when the provider changes the rules and how to degrade gracefully.

  • Python
  • Flask
  • Spotify API
• 
  Web Development

  El Gato Tuerto — Liquor Store

  How continuous feedback from the owner turned a simple catalog into a store with checkout, delivery integration and a marketing plan.

  • React
  • JavaScript
  • MongoDB
• 
  Data Science

  Item Classification with K-Means

  Analysts rated every item by hand. A clustering model — and an uncomfortable conversation about the number of categories — reached 85% accuracy.

  • Python
  • scikit-learn
  • Power BI
• 
  Data Science

  Surplus Distribution

  Four analysts reviewed items one by one. A rotation-weighted metric and a store × item matrix cut the time spent on the task by 80%.

  • Python
  • pandas
• data_preparation.py → data_processing.py → model.py
  Data Science

  Rating Prediction Pipeline

  Three scripts that merge shipments, master data and historical ratings, then train a neural network, a decision tree and KNN to predict item ratings.

  • Python
  • scikit-learn
  • SQLAlchemy
• 
  Mobile Development

  MotivAI

  Built with two colleagues: onboarding with Firebase Auth, habit tracking, and a chatbot whose mood adapts to the user.

  • Swift
  • SwiftUI
  • Firebase
• 
  Mobile Development

  Raisen

  A solo project: enter a city and a number of days, get a route with places, timings and images — plus a collage generator for wallpapers.

  • Swift
  • Firebase
  • OpenAI
• 
  Data Science

  Web Scraping Toolkit

  Scrolling catalogs, cleaning prices and automating logins on streaming services to build datasets ready for analysis.

  • Python
  • Selenium
  • BeautifulSoup
• 
  Data Science

  Excel VBA Macros for Inventory

  Pivot tables, lookups and conditional formatting wired together in VBA to replace hours of manual inventory work.

  • Excel
  • VBA
• 
  Web Development

  Building This Portfolio

  Why the site went through five iterations, what each one taught me, and why server-side rendering won in the end.

  • Flask
  • Jinja
  • React