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Data Engineer

Build robust data pipelines and infrastructure to process and manage large-scale data systems.

Duration:12-18 months

Key Skills to Learn

Python/JavaSQLBig Data ToolsCloud PlatformsETLSystem DesignData Architecture

Learning Path

1

Programming Fundamentals

Learn Python or Java for data engineering.

Duration: 4-6 weeks

Core LanguageOOPError HandlingBest Practices
2

SQL Mastery

Deep dive into SQL for complex queries and optimization.

Duration: 6-8 weeks

Advanced QueriesQuery OptimizationIndexingWindow Functions
3

Database Systems

Understand relational and NoSQL databases.

Duration: 6-8 weeks

Relational DatabasesNoSQL DatabasesDatabase DesignCAP Theorem
4

ETL/Data Pipeline

Build data pipelines and ETL systems.

Duration: 8-10 weeks

ETL ConceptsApache AirflowData QualityPipeline Testing
5

Big Data Tools

Work with distributed computing frameworks.

Duration: 8-10 weeks

Apache SparkHadoopMapReduceDistributed Processing
6

Cloud Platforms

Learn cloud data platforms and services.

Duration: 6-8 weeks

AWS/GCP/Azure Data ServicesCloud StorageManaged Services
7

Data Warehousing

Design and manage data warehouses.

Duration: 6-8 weeks

Data Warehouse ArchitectureStar SchemaFact and Dimension TablesQuery Optimization
8

Real-World Projects

Build production-grade data systems.

Duration: 8-12 weeks

End-to-End PipelinesLarge-Scale ProcessingMonitoring and AlertingPerformance Optimization

Tools & Technologies

Programming

  • Python
  • Java
  • Scala

Databases

  • PostgreSQL
  • MongoDB
  • Cassandra
  • Redis

Big Data

  • Apache Spark
  • Hadoop
  • Hive
  • Kafka

Workflow Orchestration

  • Apache Airflow
  • Prefect
  • Dagster

Cloud Platforms

  • AWS (S3, RDS, Redshift)
  • GCP (BigQuery, Dataflow)
  • Azure (Data Lake, Synapse)

Containerization

  • Docker
  • Kubernetes

Hands-On Projects

CSV to Database Pipeline

Build a simple ETL pipeline that reads CSV files and loads data into a database.

beginner

Real-time Data Ingestion

Create a pipeline that processes streaming data from APIs or message queues.

intermediate

Data Warehouse Design

Design and build a data warehouse with star schema for analytical queries.

intermediate

Distributed Data Processing

Process large datasets using Apache Spark or Hadoop.

advanced

Cloud Data Lake

Build a scalable data lake on AWS/GCP with proper governance.

advanced

Learning Resources

Online Courses

  • Udemy - The Complete Hands-On Introduction to Apache Spark
  • DataCamp Data Engineering Path
  • LinkedIn Learning - Data Engineering Fundamentals

Books

  • Fundamentals of Data Engineering by Joe Reis & Matt Housley
  • Designing Data-Intensive Applications by Martin Kleppmann
  • The Art of SQL by Stephane Faroult