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Moaaz74/README.md

MOAAZ MOSTAFA

Data Engineer | Building Scalable Data Systems & Analytics Pipelines

🧭 Mission

I design and build data systems that turn raw, messy data into reliable analytics-ready models.

Focused on:

  • Data Warehousing (Dimensional Modeling)
  • ETL/ELT Pipeline Design
  • Data Quality & Transformation
  • Scalable SQL-based Architectures

⚙️ Core Expertise

🧱 Data Engineering

  • ETL / ELT pipeline development
  • Data modeling (Star Schema / Snowflake Schema)
  • Data cleaning & transformation logic
  • Incremental loading strategies

🗄️ Databases

  • SQL Server (Advanced querying & optimization)
  • PostgreSQL (Relational modeling & analytics queries)

🧪 Data Processing

  • Python for data transformation
  • Pandas for batch processing
  • Automation scripts for pipelines

🏗️ System Design Mindset

  • Designing fact & dimension tables
  • Building scalable data marts
  • Ensuring data consistency across sources
  • Optimizing for query performance & analytics use cases

📌 Featured Projects

📦 Retail Data Warehouse

Star schema design with fact sales table and multiple dimensions:

  • Product Dimension
  • Date Dimension
  • Geography Dimension
  • Customer Dimension

📈 Engineering Focus

Raw Data → Cleaning → Transformation → Modeling → Analytics Layer

🧰 Tech Stack

  • Python
  • SQL Server
  • PostgreSQL
  • Pandas
  • ETL Pipelines
  • Data Warehousing Concepts

📊 GitHub Stats

GitHub Stats

Top Languages

🤝 Connect

"Data is only valuable when it becomes structured insight."

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