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seandunleavy/README.md

Hi, I'm Sean Dunleavy πŸ‘‹

Python SQL PySpark Pandas Power BI Microsoft Fabric Azure Excel Git Jupyter

Healthcare analytics professional transitioning to Data Analyst / BI Developer / Data Engineer roles.

7+ years hands-on experience with advanced SQL querying, dashboard development (Salesforce/Excel), root-cause analysis, data wrangling, and process optimization in regulated environments (HIPAA, 340B).

Actively building production-grade skills in Microsoft Fabric, Power BI, PySpark, Python (Pandas/Seaborn), and leveraging generative AI (Grok/xAI) to accelerate development, troubleshooting, and insights.

πŸ”­ Recently completed: End-to-end data pipelines, interactive dashboards, and EDA projects
🌱 Currently learning: Advanced DAX, Fabric Lakehouse patterns, CI/CD for data workflows
πŸ“ˆ Focused on: Scalable data engineering and turning complex data into actionable business value

Skills & Tools

  • Data Analysis: Advanced SQL (SQL Server), EDA, Root Cause Analysis, Data Cleaning/Validation, JSON flattening
  • Visualization & BI: Salesforce Dashboards/Reports, Excel (Power Query, PivotTables, Advanced Charts), Power BI (DAX, candlesticks, slicers, KPIs)
  • Programming: Python (Pandas, NumPy, Seaborn), PySpark (notebooks for ingestion/transformation), Java (OOP familiarity)
  • Productivity & Engineering: Generative AI (Grok/xAI, Gemini) for query optimization & prompt engineering, Microsoft Fabric (pipelines, Lakehouse), Jira/Confluence, Agile/Scrum
  • Domain: Healthcare Data (340B, EHR integration, claims analysis), Data Governance/Quality

Featured Projects

Hands-on portfolio projects showcasing end-to-end analysis, visualization, and data engineering:

  1. Massive Stock Data Pipeline & Power BI Dashboard
    Automated Microsoft Fabric pipeline fetching latest 30-day AAPL daily bars from Massive.com API.

    • PySpark notebooks for JSON flattening, cleaning, deduplication, and appending to growing Lakehouse Delta table
    • Interactive Power BI dashboard: candlestick/line charts, KPI cards (price, % change, volume), date slicers
    • End-to-end automation for up-to-date stock trend monitoring
      Tech: Microsoft Fabric, PySpark, Power BI (DAX), API integration
  2. Healthcare Insurance Claims Analysis
    Exploratory data analysis on synthetic insurance claims to uncover cost drivers and patterns.

    • Cleaned/analyzed data with Python/Pandas/Seaborn; visualized distributions and correlations
    • Key insight: Smokers incur ~280% higher average charges than non-smokers
      Tech: Python, Pandas, Seaborn, Jupyter Notebooks
  3. Superstore Sales Dashboard
    Interactive dashboard analyzing Superstore sales for trends, regional performance, and KPIs.

    • Power Query for prep, PivotTables/charts for visuals, slicers for interactivity
    • Actionable insights on sales, profit, categories, and top performers
      Tech: Excel (Power Query, PivotTables, Slicers), Power BI concepts

View all repositories β†’ github.com/seandunleavy?tab=repositories

Get in Touch

Thanks for stopping by! Open to collaborations, feedback, or opportunities in analytics/BI/DE. Let's connect if you're hiring or building cool data stuff. πŸš€

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  1. Massive-Stock-Pipeline-PowerBI Massive-Stock-Pipeline-PowerBI Public

    End-to-end Microsoft Fabric pipeline + Power BI dashboard for AAPL daily stock data from Massive.com API

  2. seandunleavy seandunleavy Public

  3. Healthcare-Insurance-Claims-Analysis Healthcare-Insurance-Claims-Analysis Public

    Exploratory data analysis and cleaning of insurance claims dataset using Python/Pandas

  4. Superstore-Sales-Dashboard Superstore-Sales-Dashboard Public

    Interactive Excel dashboard analyzing Superstore sales data to uncover trends, KPIs, and business insights.