From all the books I’ve read and courses I’ve done, below is a small subset of those that I would wholeheartedly recommend:

Data Engineering

• Designing Data-Intensive Applications
• T-SQL Querying
• Fundamentals of Data Engineering
• Carnegie Mellon University: Intro to Database Systems course
• Carnegie Mellon University: Advanced Database Systems course

Cloud and DevOps

• Kubernetes in action
• Microsoft Azure Master Class v2 by John Savill

Java

• Java 8 in Action
• Effective Java

Back-end development in Python

• FastAPI: Modern Python Web Development

Finance

• Central Banking 101
• Principles for Navigating Big Debt Crises
• The Price of Money