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MarcoData2/README.md

Data Analyst & Business Analyst Portfolio

Power BI Excel SQL Server MySQL Python Unix

E-commerce Sales Dashboard – Full $1.46M Revenue Analysis

Interactive Power BI dashboard analyzing $1.46 million USD in sales across 5,654 orders from a multi-category e-commerce business (2023 – 2025).

Portfolio Preview (9 pages – Updated December 11th 2025)

Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9


Key Business Insights

  • Total Revenue: $1,456,309 | 5,654 orders
  • Average Order Value: $1,456
  • Top Category: Sports → $319K (21.9%)
  • Top 3 Categories: Sports ($319K) → Electronics ($295K) → Clothing ($289K)
  • Highest-Spending Segment: Customers 46+ years old
  • Top 10 customers contribute >$47K in revenue
  • Peak sales day: Friday | Preferred payment: Credit Card ($398K)
  • Women outspend men in Sports | Men dominate Electronics
  • Best month ever: March 2023 (~$78K)
  • Performance Analysis: Products segmented into High/Low Performance based on sales vs category average
  • Performance Metrics: High Performance Revenue vs Low Performance Revenue with distribution analysis

Dashboard Features (9 interactive pages)

Page Focus Area Visualization Type
1 Executive Summary KPI Cards + Monthly Trend Line
2 Sales by Category & Geography Horizontal Bars + Sunburst Chart
3 Customer Analysis Age Groups + Top 10 Customers Table
4 Sales by Day & Payment Method Line + Column + Detailed Matrix
5 Top 3 Categories Deep Dive Large KPIs + Horizontal Bars
6 Sales by Category & Gender 100% Stacked Columns + Custom Banners
7 Monthly Evolution 2023–2025 Chronological Horizontal Bar
8 Top 5 Locations by Revenue Clustered Bar Chart
9 Product Performance Analytics Performance KPI Cards + Ranking Table + Donut Chart + Comparative Analysis

Advanced Features

  • Complex DAX measures (dynamic ranking, conditional segmentation, performance classification, dynamic titles & formatting)
  • Simulated real-world ETL process extracting data from SQL Server and AWS Redshift-like structures using Power Query
  • Interactive filters, drill-through, bookmarks, custom tooltips
  • Professional design focused on executive-level data storytelling
  • Performance analytics with product segmentation and ranking algorithms
  • Product performance classification (High/Low) with category-based benchmarking
  • Automated product ranking and revenue segmentation by performance tier

Repository Contents

  • Portfolio.pdf → Full dashboard export (9 pages)
  • DASHBOARD.pbix → Interactive Power BI file
  • synthetic_ecommerce_data.csv → Source synthetic dataset

Tools & Skills Demonstrated

  • Power BI (Data Modeling, Advanced DAX, Dashboard Design)
  • Power Query (simulated enterprise ETL pipelines)
  • SQL Server & cloud data warehouse concepts (AWS Redshift)
  • Excel Advanced
  • Python for data processing and automation when required
  • Unix environment experience
  • Business-oriented data visualization & storytelling
  • Performance analytics and product segmentation methodologies
  • KPI development and comparative analysis frameworks

Full PDF Version (10 pages)

Download Portfolio PDF


Looking for a Data Analyst who delivers actionable business insights?

I'm actively open to Data Analyst, Business Intelligence Analyst, or BI & Analytics roles at data-driven companies.

Let's connect and discuss how I can help your team turn raw data into strategic advantages.

Contact
📧 Email: [email protected]

📱 Phone / WhatsApp: (+52) 55 6400-3686

💼 LinkedIn: https://www.linkedin.com/in/marcodata19

🐙 GitHub: https://github.com/MarcoData2

Based in Mexico City | Open to relocation abroad (relocation expenses covered) | Available for remote, hybrid or onsite roles worldwide

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