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Nnaemezue Obi-Eyisi

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My Guide to Becoming a “Market-Ready” Data Engineer With a $100 Investment in 3 Months or Less —…

As you may know, the demand for Data Engineers has quadrupled in the last 2 years. There are more jobs than candidates in the job market…

11 min readJan 25, 2021

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My Guide to Becoming a “Market-Ready” Data Engineer With a $100 Investment in 3 Months or Less —…

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Nnaemezue Obi-Eyisi

Data Engineers Ace Python Coding Interviews NOW!

If I’m honest, I could have landed a job at a MAANG company by now if I had spent enough time practicing coding assessments for data…

8 min readApr 7, 2024

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Data Engineers Ace Python Coding Interviews NOW!

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Nnaemezue Obi-Eyisi

ANALYZE your Databricks Delta Tables for improved

Most of the time when I try to optimize the performance of Delta tables, I focus on file size, organization, and structure. This is where…

3 min readMar 25, 2024

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ANALYZE your Databricks Delta Tables for improved

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Nnaemezue Obi-Eyisi

Mastering SQL Window Functions: The Secret to Acing Data Engineering Interviews!

Some of the most commonly used functions in SQL programming for data engineering workloads are window functions. They are also one of the…

7 min readMar 23, 2024

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Mastering SQL Window Functions: The Secret to Acing Data Engineering Interviews!

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Nnaemezue Obi-Eyisi

Mastering the Art of Debugging in Data Engineering

As data engineers, encountering bugs and issues in our projects is par for the course. However, instead of viewing them as obstacles, we…

4 min readMar 13, 2024

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Mastering the Art of Debugging in Data Engineering

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Nnaemezue Obi-Eyisi

Comparing Replacewhere to PartitionOverwrite in Databricks Delta Tables

Recently, a colleague asked if I had utilized the recently released PartitionOverwrite API by Databricks for Delta tables. Although I…

6 min readJan 16, 2024

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Data Partitioning (Sharding) in System Design

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Nnaemezue Obi-Eyisi

Building Resilient Data Pipelines: A Guide for Data Engineers

The field of data engineering is dynamic, and the journey from a junior to a senior data engineer involves mastering the art of designing…

8 min readJan 10, 2024

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Building Resilient Data Pipelines: A Guide for Data Engineers

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Nnaemezue Obi-Eyisi

Comparing Shallow Clones, Deep Clones, Views, and Create Table As in Databricks Delta Lake

Databricks offers various methods to create copies of existing Delta Lake tables, each serving specific use cases. Let’s explore the…

2 min readNov 14, 2023

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Comparing Shallow Clones, Deep Clones, Views, and Create Table As in Databricks Delta Lake

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Nnaemezue Obi-Eyisi

Design Recommendations and Guidelines for Adopting Unity Catalog in Your Existing Azure Data…

In this blog post, my aim is to guide you on how to effectively utilize the Unity Catalog within your current data lakehouse and offer my…

6 min readNov 5, 2023

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Design Recommendations and Guidelines for Adopting Unity Catalog in Your Existing Azure Data…

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Nnaemezue Obi-Eyisi

Evaluating Databricks Job clusters Cost Savings and Performance in ADF

The motivation behind writing this article is to explore the potential cost savings associated with Databricks job clusters and to…

4 min readNov 3, 2023

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Evaluating Databricks Job clusters Cost Savings and Performance in ADF

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Nnaemezue Obi-Eyisi

Nnaemezue Obi-Eyisi

I am passionate about empowering, educating, and encouraging individuals pursuing a career in data engineering. Currently a Senior Data Engineer at Capgemini

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