Recently, one of my best friends, who is, in the meantime, one of the smartest developers I have the luck to know, asked me what book he should read next to further develop his skills. It took me some time to gather my thoughts, and it might be useful for others, too.
Spoiler alert: I could not find a single book that I would say is the one to read as a senior developer. Instead, I summarized the books that I found good for one reason or another. As the summary also declared, this is a subjective list; feel free to agree or disagree with my choices, as well as feel free to leave a comment or contact me in any other way to share your thoughts.