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  • Joined Sep 29, 2025

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barcelonab/README.md

Billie Barcelona

LinkedIn Github Notion Power BI

Hi There!
I’m a BI Developer with strong background in transforming raw data into meaningful insights and interactive dashboards.
I specialize in building end-to-end data solutions from data modeling and ETL development to designing user-friendly reports that support data-driven decisions.

🛠 Skills & Tools

Python   |    SQL  |    SQL Server  |    MySQL  |    OracleDB  |    Power BI  |    Microsoft Fabric  |    Azure Data Lake  |    Azure DevOps  |    Snowflake  |    Excel  |   ⚙️ETL Development  |    GitHub  |    Git  

🏆 Certifications

  • DP-600 – Microsoft Certified: Fabric Analytics Engineer Associate
  • PL-300 - Microsof Certified: Power BI Data Analyst Associate
  • CompTIA A+

    • 📂 Featured Projects

    Cost and Revenue Summary
    Worldwide Earthquake Events
    Credit Card Key Influencer
    Salesforce Sales Return
    Gym Workout Activity
    Healthcare Financial Analysis
    Patient Visits Report

  • Automated ETL Pipelines – Python & SQL pipelines for data integration.
  • Database Management – Designed and optimized RDBMS (on-prem & cloud) for storing and querying large datasets efficiently.
  • AI-Powered Insights – Built predictive models and AI analytics dashboards using Python and Power BI to generate actionable insights.
  • Interactive Data Visualization – Created interactive dashboards and visual reports in Power BI to support data-driven decision-making.

    • 🚀 Feel free to explore my repositories and check out my work!

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    1. Cost-and-Revenue-Dashboard Cost-and-Revenue-Dashboard Public

      Interactive Sales Dashboard that analyzes monthly revenue trends while providing detailed customer and product breakdowns.

    2. credit-card-key-influencer credit-card-key-influencer Public

      This report highlights the factors that impact and influence the approval decision for credit card applications

    3. Gym-Activity Gym-Activity Public

      Total workouts at each location are shown in the report, grouped by age and time.

    4. patient-visits patient-visits Public

      Highlights the number of patient visits and admissions. Displays the average waiting time and patient satisfaction rate.

      Python

    5. Salesforce-Sales-Return Salesforce-Sales-Return Public

      Summary report, details the total items returned by month, including the reason for their return and the subsequent action taken.

    6. Worldwide-Earthquake-Events Worldwide-Earthquake-Events Public

      Visualize the total earthquake events worldwide, including their significance and magnitude.

      Jupyter Notebook