Abstract: The advances in computational and numerical capabilities allow more efficient Engineering design through the use of optimization methods. Thus, new realistic and challenging optimization applications in practical Engineering have been tackled. Among them we have the design of sophisticated engineering systems. This mini-symposium is dedicated to the discussion of recent developments and applications of optimization techniques, mathematical programming algorithms, sensitivity analysis, metaheuristic methods, optimization under uncertainties, optimization coupled with reliability analysis, and surrogate modeling in the field of Engineering design and related areas. The goal is to bring together researchers, students and professionals working in those areas. Papers related to practical applications of optimization methods as well as software development are encouraged to be submitted in this mini-symposium.