Skip to content
View orejandro79's full-sized avatar

Block or report orejandro79

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 donโ€™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 userโ€™s behavior. Learn more about reporting abuse.

Report abuse
orejandro79/README.md

๐Ÿ‘‹ Hi there, I'm Jaime Orejarena

๐ŸŽฏ Data Scientist & BI Analyst | SQL โ€ข Python โ€ข Power BI | Machine Learning | Construction & Operations Strategist

I'm a Multidisciplinary Industrial Engineer with over 12 years of experience leading construction projects and delivering data-driven business solutions in diverse sectors such as construction, fintech, and health tech.

With strong command of Python, SQL, Power BI, and machine learning, I specialize in developing forecasting models, automating analytics workflows, and building executive dashboards that drive actionable insights.


๐Ÿš€ What I Do

๐Ÿ”น Data Analytics & BI โ€“ Transform complex datasets into strategic decisions
๐Ÿ”น Machine Learning โ€“ Predictive modeling, classification, churn analysis, forecasting
๐Ÿ”น Construction Intelligence โ€“ Project optimization, cost forecasting, KPI dashboards
๐Ÿ”น Business Strategy โ€“ Bridging technical solutions with business outcomes
๐Ÿ”น Mentorship โ€“ Supporting analysts in Python, SQL, and dashboard development


๐Ÿง  Key Skills & Tools

Languages & Tools
Python โ€ข SQL โ€ข Power BI โ€ข Tableau โ€ข DAX โ€ข Excel โ€ข Git & GitHub
Libraries
pandas โ€ข numpy โ€ข scikit-learn โ€ข matplotlib โ€ข seaborn โ€ข statsmodels โ€ข XGBoost
Techniques
EDA โ€ข Data Wrangling โ€ข Time Series Forecasting โ€ข Logistic Regression โ€ข Clustering โ€ข A/B Testing
Soft Skills
Agile SCRUM โ€ข Stakeholder Communication โ€ข Team Leadership โ€ข Trilingual (EN/ES/FR)


๐Ÿ—๏ธ Construction + Data Fusion Projects

A business intelligence project using SQL, Python & Power BI to model and visualize gambling revenue.
โญ Holt Forecasting | Winsorization | Interactive Dashboard

End-to-end pipeline predicting future product prices using advanced time series modeling.
โญ Seasonal Decomposition | Monthly Aggregation | Custom Query Tool


๐Ÿ”ฌ ML & Analytics Projects

Predicting user churn using XGBoost & Random Forest; delivering insights with Tableau.
โญ EDA | Feature Engineering | Precision-Focused Modeling

SQL & Python analysis of NBA team performance and dynamics.
โญ SQL Joins | Correlation Analysis | Performance Breakdown


๐Ÿงฐ Other Notable Projects


๐Ÿ“ซ Letโ€™s Connect

๐Ÿ”— LinkedIn
๐Ÿ”— GitHub
๐Ÿ“ง Email: orejarenajaime1979@gmail.com

GitHub Followers
GitHub Stars

Pinned Loading

  1. WazeGrow WazeGrow Public

    WazeGrow is a machine learning project designed to predict user churn for Waze, a leading navigation app. By identifying at-risk users and understanding churn drivers, Waze can implement proactive โ€ฆ

    Jupyter Notebook

  2. Credit_Risk_Analysis Credit_Risk_Analysis Public

    Jupyter Notebook

  3. Salifort_Motors_project_lab Salifort_Motors_project_lab Public

    Jupyter Notebook

  4. JPMorgan-Chase---Co JPMorgan-Chase---Co Public

    Jupyter Notebook

  5. Dream_team_knicks_analysis Dream_team_knicks_analysis Public

    Jupyter Notebook 4

  6. Machine_learning_labs Machine_learning_labs Public

    Jupyter Notebook