Turnbull joined Nammos Hotels & Resorts in her current role in June 2025, leading its transformation from its Mykonos beach club origins into a global lifestyle hospitality brand under ADMO Lifestyle Holding. The group has Nammos Hotel Mykonos. In 2026, it opened its first global resort hotel, Nammos Resort AMAALA, in Saudi Arabia, partnered with Modon Holding to launch Nammos Ras El Hekma in Egypt, and announced another coastal resort in Montenegro. Nammos Resort Maldives is under development and scheduled for opening in 2027. Turnbull previously held senior positions at Aman, AZERAI, Tourism Western Australia, and more.