The thesis presented in this article explores a techno-economic approach to enhancing offshore wind-based hydrogen production for the purpose of decarbonizing the industry. By combining electrolysers with wind energy in offshore locations, the aim is to increase the production of green hydrogen. The study focuses on optimizing this process through Multidisciplinary Design Optimization, utilizing a modular design that encompasses desalination, hydrogen production, compression, and transportation via a hydrogen pipeline. A key finding of the thesis is the presence of non-linearities in the design problem, which were effectively addressed using a sequential differential evolution algorithm. The optimized design highlighted the significance of adjusting the electrolyser pressure, showcasing potential reductions in work requirements for the compressor and desalination processes while simultaneously increasing hydrogen production. The research, supervised by Prof. Dr. Dominic von Terzi, underscores the potential for innovation in offshore wind technologies to drive sustainable hydrogen production.