Testing

Code Complete

Steve McConnell

Often recommended

Refactoring

Martin Fowler

Often recommended

Working Effectively with Legacy Code

Michael Feathers

Often recommended

The Clean Coder

Robert C. Martin

Often recommended

Building Evolutionary Architectures

Neal Ford

Architecture Patterns with Python

Harry Percival

Unit Testing Principles, Practices, and Patterns

Vladimir Khorikov

Continuous Delivery

Jez Humble

Growing Object-Oriented Software, Guided by Tests

Steve Freeman

Why Programs Fail

Andreas Zeller

Test-Driven Development: By Example

Kent Beck