I'm John McCarthy, a senior architectural, interiors and technical designer focused on bridging concept development, masterplanning and technical delivery across hospitality, workplace, high-end residential and luxury retail. I specialise in fabric-first and natural materials, translating design intent into coordinated, buildable packages, backed by hands-on self-build experience. As founder of Number 39 Ltd and principal designer for international studios, I lead projects from concept through delivery, collaborating with clients to achieve low-energy, breathable environments and meticulous detailing. My work spans boutique resorts, luxury hotels, flagship retail rollouts and corporate spaces across the UK and Gulf states, underpinned by collaboration, clear communication and practical problem-solving.…I'm John McCarthy, a senior architectural, interiors and technical designer focused on bridging concept development, masterplanning and technical delivery across hospitality, workplace, high-end residential and luxury retail. I specialise in fabric-first and natural materials, translating design intent into coordinated, buildable packages, backed by hands-on self-build experience. As founder of Number 39 Ltd and principal designer for international studios, I lead projects from concept through delivery, collaborating with clients to achieve low-energy, breathable environments and meticulous detailing. My work spans boutique resorts, luxury hotels, flagship retail rollouts and corporate spaces across the UK and Gulf states, underpinned by collaboration, clear communication and practical problem-solving.WWWW…