Dr. Kerem Koseoglu is a seasoned software engineer, author, and educator with extensive experience in global projects and commercial applications. With over twenty years of experience in ABAP, he is also profi_x0002_cient in database driven development using Python and Swift. As well as the book on Swift in your hands, Dr. Koseoglu is also the author of Design Patterns in ABAP Objects (SAP PRESS), SQL: The Practical Guide (Rheinwerk Computing), and several best selling technical books in Türkiye. Dr. Koseoglu holds a PhD in organizational behavior and is renowned for his work in time management. He conducts a variety of technical and soft-skill trainings. He speaks Turkish, English, and German fluently. When he's not coding or teaching, you are likely to find Dr. Koseoglu on the stage, play_x0002_ing his bass guitar.