Skip to content
View Gian-DS1's full-sized avatar
  • Santo Domingo, Dominican Republic
  • 21:20 (UTC -04:00)
  • LinkedIn in/gestevez-ds

Highlights

  • Pro

Block or report Gian-DS1

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
Gian-DS1/README.md

Hi, I'm Giancarlos Estévez 👋

Typing SVG


👨‍💻 About me

I'm an early-career data engineer from Santo Domingo, Dominican Republic, building my way into data through real projects.

  • 🎓 MSc in Data Science & Business Analytics (IMF Smart Education / UCAV, co-developed with Indra–Minsait)
  • 📚 Currently studying Software Engineering to pair data skills with solid engineering practices
  • 💼 ~6 years in customer service across regulated health & finance sectors — real domain knowledge and the habit of adapting fast to complex business rules
  • 🌎 Spanish (native) · English (C1) · open to remote roles
  • 🎯 Goal: build efficient, scalable and maintainable data pipelines — and become the best data engineer I can be

🚀 Featured project — DeepValue AI

An intelligent asset-selection system for the US stock market. Built as my Master's thesis.

A multi-source ETL pipeline + ML system that scans ~3,600 US stocks using 34 features and 5 years of history, with strict point-in-time safety to avoid look-ahead bias.

  • 🔗 Multi-source ingestion — SimFin, FRED, SEC EDGAR & Yahoo Finance merged into a single dataset
  • 📦 Parquet storage with incremental per-ticker cache — daily screening dropped from ~60 min to ~5 min
  • ⏱️ Point-in-time integrity — every source uses its real publication date
  • CI/CD (GitHub Actions), 191 unit tests, MLflow tracking, drift monitoring

Python · pandas · scikit-learn · MLflow · Parquet · GitHub Actions · pytest

➡️ Repo coming soon — currently uploading the latest rebuild.


🛠️ Tech stack

Python SQL pandas scikit-learn MLflow Parquet GitHub Actions pytest AWS Databricks Power BI Streamlit


🤖 How I build

I use AI-assisted development as part of my workflow, and I'm open about it. My focus is on owning the decisions — architecture, data integrity, trade-offs — and understanding every part of what I ship well enough to explain and extend it. I treat AI as a power tool, not a substitute for understanding.


🎓 Selected certifications

AWS Academy — ML & Cloud Foundations · IBM Data Science · Google Cybersecurity · Alura LATAM — Data Science & AI Agents


📊 GitHub stats


🌐 Let's connect

Pinned Loading

  1. Customer-Churn-ML Customer-Churn-ML Public

    Churn prediction for a telecom company — EDA, data cleaning, and ML modeling with Python & Pandas

    Jupyter Notebook