Most enjoyed

• A sangre y fuego. Héroes, bestias y mártires de España -- Manuel Chaves
• Anna Karenina -- Leo Tolstoy
• Antifragile: Things That Gain from Disorder -- Nassim Nicholas Taleb
• Blindness -- Jose Saramago
• Build: An Unorthodox Guide to Making Things Worth Making -- Tony Faddel
• Foundation series -- Isaac Asimov
• I Am Pilgrim -- Terry Hayes
• Loonshots: how to nurture the crazy ideas that win wars, cure diseases, and transform industries -- Safi Bahcall
• Love in the Time of Cholera -- Gabriel Garcia Marquez
• Open -- Andre Agassi
• Patria -- Fernando Aramburu
• Ready Player One -- Ernest Cline
• Skunk Works: A Personal Memoir of My Years at Lockheed -- Ben R. Rich
• The Hard Thing About Hard Things -- Ben Horowitz
• Un lume azul -- Pedro Feijoo

Recommend for software engineers

Junior Engineer

• Clean Code -- Robert Cecil Martin
• Refactoring -- Kent Beck and Martin Fowler
• The C Programming Language -- Brian Kernighan and Dennis Ritchie
• How Linux Works -- Brian Ward
• Practical Vim: Edit Text at the Speed of Thought -- Drew Neil
• Seven Languages in Seven Weeks -- Bruce A. Tate

Software Engineer

• The Software Engineer's Guidebook -- Gergely Orosz
• Designing Data-Intensive Applications -- Martin Kleppmann
• Domain-Driven Design: Tackling Complexity in the Heart of Software -- Eric Evans
• Design Patterns: Elements of Reusable Object-Oriented Software -- Erich Gamma, Richard Helm, Ralph Johnsoni, John Vlissides

Senior Engineer

• Build: An Unorthodox Guide to Making Things Worth Making -- Tony Faddel
• The Hard Thing About Hard Things -- Ben Horowitz
• The Phoenix Project -- Gene Kim, Kevin Behr, George Spafford
• Site Reliability Engineering -- Betsy Beyer, Jennifer Petoff, Niall Richard Murphy, Chris Jones
• The Manager's Path -- Camille Fournier