Jonah Marin is a barista training and experience specialist with 11 years in premium cafés and competitive barista circuits. He began as a head trainer at a multinational café group and later consulted for boutique roasteries on beverage menus and service protocols. He holds a Level 3 Barista Certification from the UK Barista Guild and a Diploma in Beverage Operations from the Coffee Academy of Milan. Jonah focuses on sensory-driven service, standardized beverage recipes, and café ambience design, translating complex espresso science into practical, repeatable practices for high-end venues.