Books

Product Specification & Design

• Impact Mapping G. Adzic
• User Story Mapping J. Patton
• Event Storming A. Brandolini

Project & Team Management

• The Mythical Man Month F. Brooks
• Peopleware T. Demarco & T. Lister
• Scrum & XP From the Trenches H. Kniberg (freely available online)
• The Art of Agile Development: Pragmatic Guide to Agile Software Development Shane Warden & James Shore
• Extreme Programming Explained: Embrace Change Kent Beck & Cynthia Andres
• Lean Software Development: An Agile Toolkit Agile Toolkit Mary Poppendieck, Tom Poppendieck
• Team Geek: A Software Developer's Guide to Working Well with Others Brian W. Fitzpatrick, Ben Collins-Sussman

Computer Science basics

• Structure and Interpretation of Computer Programs Hal Abelson's & Jerry Sussman's (freely available online)

Domain Driven Design

• Domain-Driven Design: Tackling Complexity in the Heart of Software Eric Evans
• Domain-Driven Design Distilled Vaughn Vernon
• Implementing Domain-Driven Design Vaughn Vernon
• Domain Driven Design Quickly InfoQ (freely available online)
• Patterns, Principles, and Practices of Domain-Driven Design Scott Millett

Code design

• Clean Code Robert Cecil Martin
• Code Complete 2 Steve McConnell

TDD

• Test Driven Development: By Example Kent Beck

Refactoring

• Working Effectively with Legacy Code Michael C. Feathers
• Refactoring Martin Fowler & Kent Beck

Career / professionalism

• The Pragmatic Programmer Andy Hunt & Dave Thomas
• The Clean Coder: A Code of Conduct for Professional Programmers Robert Cecil Martin
• The Software Craftsman: Professionalism, Pragmatism, Pride Sandro Mancuso
• The Zen Programmer Christian Grobmeier

Architecture

REST

• RESTful Web Services Leonard Richardson & Sam Ruby

CQRS

• CQRS Documents Greg Young (freely available online)

Languages

Javascript

• JavaScript Allongé, the "Six" Edition Reg “raganwald” Braithwaite (freely available online)

Ruby

• The Well-Grounded Rubyist David A. Black

Java

• Effective Java Joshua Bloch
• Core Java for the Impatient Cay S. Horstmann

Clojure

• Clojure for the Brave and True Daniel Higginbotham

SQL

• SQL Performance Explained: Everything Developers Need to Know about SQL Markus Winand

Cryptocurrencies

Bitcoin

• Mastering Bitcoin: Unlocking Digital Cryptocurrencies Andreas M. Antonopoulos
• The Internet of Money Andreas M. Antonopoulos
• Bitcoin. La monnaie acéphale (FR) Jacques Favier / Adli Takkal Bataille