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Cracking the Data Engineering Interview

You're reading from   Cracking the Data Engineering Interview Land your dream job with the help of resume-building tips, over 100 mock questions, and a unique portfolio

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Product type Paperback
Published in Nov 2023
Publisher Packt
ISBN-13 9781837630776
Length 196 pages
Edition 1st Edition
Languages
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Authors (2):
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Kedeisha Bryan Kedeisha Bryan
Author Profile Icon Kedeisha Bryan
Kedeisha Bryan
Taamir Ransome Taamir Ransome
Author Profile Icon Taamir Ransome
Taamir Ransome
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Table of Contents (23) Chapters Close

Preface 1. Part 1: Landing Your First Data Engineering Job
2. Chapter 1: The Roles and Responsibilities of a Data Engineer FREE CHAPTER 3. Chapter 2: Must-Have Data Engineering Portfolio Projects 4. Chapter 3: Building Your Data Engineering Brand on LinkedIn 5. Chapter 4: Preparing for Behavioral Interviews 6. Part 2: Essentials for Data Engineers Part I
7. Chapter 5: Essential Python for Data Engineers 8. Chapter 6: Unit Testing 9. Chapter 7: Database Fundamentals 10. Chapter 8: Essential SQL for Data Engineers 11. Part 3: Essentials for Data Engineers Part II
12. Chapter 9: Database Design and Optimization 13. Chapter 10: Data Processing and ETL 14. Chapter 11: Data Pipeline Design for Data Engineers 15. Chapter 12: Data Warehouses and Data Lakes 16. Part 4: Essentials for Data Engineers Part III
17. Chapter 13: Essential Tools You Should Know 18. Chapter 14: Continuous Integration/Continuous Development (CI/CD) for Data Engineers 19. Chapter 15: Data Security and Privacy 20. Chapter 16: Additional Interview Questions
21. Index 22. Other Books You May Enjoy

Roles and responsibilities of a data engineer

Data engineers are responsible for the design and maintenance of an organization’s data infrastructure. In contrast to data scientists and data analysts, who focus on deriving insights from data and translating them into actionable business strategies, data engineers ensure that data is clean, reliable, and easily accessible.

Responsibilities

You will wear multiple hats as a data engineer, juggling various tasks crucial to the success of data-driven initiatives within an organization. Your responsibilities range from the technical complexities of data architecture to the interpersonal skills necessary for effective collaboration. Next, we explore the key responsibilities that define the role of a data engineer, giving you an understanding of what will be expected of you as a data engineer:

  • Data modeling and architecture: The responsibility of a data engineer is to design data management systems. This entails designing the structure of databases, determining how data will be stored, accessed, and integrated across multiple sources, and implementing the design. Data engineers account for both the current and potential future data needs of an organization, ensuring scalability and efficiency.
  • Extract, Transform, Load (ETL): Data extraction from various sources, including structured databases and unstructured sources such as weblogs. Transforming this data into a usable form that may include enrichment, cleaning, and aggregations. Loading the transformed data into a data store.
  • Data quality and governance: It is essential to ensure the accuracy, consistency, and security of data. Data engineers conduct quality checks to identify and rectify any data inconsistencies or errors. In addition, they play a crucial role in maintaining data privacy and compliance with applicable regulations, ensuring that data is reliable and legally sound.
  • Collaboration with data scientists, analysts, and other stakeholders: Data engineers collaborate with data scientists to ensure they have the appropriate datasets and tools to conduct their analyses. In addition, they work with business analysts, product managers, and other stakeholders to comprehend their data requirements and deliver accordingly. Understanding the requirements of these stakeholders is essential to ensuring that the data infrastructure is both relevant and valuable.

In conclusion, the data engineer’s role is multifaceted and bridges the gap between raw data sources and actionable business insights. Their work serves as the basis for data-driven decisions, playing a crucial role in the modern data ecosystem.

You have been reading a chapter from
Cracking the Data Engineering Interview
Published in: Nov 2023
Publisher: Packt
ISBN-13: 9781837630776
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