This book contains research papers that were accepted for presentation at the 19th International Conference on Interdisciplinarity in Engineering—INTER-ENG 2025, which was held on October 2–3, 2025, in the city of Targu Mures, Romania. The general scope of the conference “Shaping the engineers of tomorrow for a more competitive European industry” is proposing to debate challenges for the future generation of engineers. They must be prepared to implement climate action and digital transformation once they enter the labor market. Topics related to advanced manufacturing technology, lean manufacturing, sustainable manufacturing, additive manufacturing, manufacturing tools, and equipment are being debated. The conference is a leading international professional and scientific forum of great interest for engineers and scientists who can read in this book research works contributions and recent developments as well as current practices in advanced fields of engineering.