Clean Code: A Handbook of Agile Software Craftsmanship
by Robert C. Martin

Code Complete
by Steve McConnell

Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems
by Martin Kleppmann

The Principles of Product Development Flow: Second Generation Lean Product Development
by Donald G. Reinertsen

The Pragmatic Programmer: your journey to mastery
by David Thomas, Andrew Hunt

Behind Closed Doors: Secrets of Great Management
by Johanna Rothman, Esther Derby

First, Break All The Rules: What the World’s Greatest Managers Do Differently
by Gallup, James K. Harter 

Good To Great: Why Some Companies Make the Leap…And Others Don’t
by Jim Collins

High Output Management
by Andrew S. Grove

Integrity: The Courage to Meet the Demands of Reality
by Henry Cloud

The Effective Executive: The Definitive Guide to Getting the Right Things Done
by Peter F. Drucker

The Effective Manager
by Mark Horstman

100 Things Every Designer Needs to Know About People
by Susan Weinschenk

Don’t Make Me Think, Revisited: A Common Sense Approach to Web Usability
by Steve Krug

Don’t Make Me Think, Revisited: A Common Sense Approach to Web Usability
by Steve Krug

Influence: The Psychology of Persuasion
by Robert B Cialdini

How to Win Friends and Influence People
by Dale Carnegie

Never Eat Alone: And Other Secrets to Success, One Relationship at a Time
by Keith Ferrazzi, Tahl Raz

Never Split the Difference: Negotiating As If Your Life Depended On It
by Chris Voss, Tahl Raz

The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change
by Stephen R. Covey

Getting Things Done: The Art of Stress-Free Productivity
by David Allen, James Fallows

The First 90 Days: Proven Strategies for Getting Up to Speed Faster and Smarter
by Michael D. Watkins