Our Team

Robert Gertz has spent more than two decades delivering exceptional service to high-profile clients. Through his experience in luxury branding, event design and production, estate management, and comprehensive real estate services, Robert envisioned the sophisticated, upscale service niche that became Modern Butler. His signature client care – personal, creative, communication-driven, intuitive, and detailed – became the guiding mission for the company that has earned Robert and Modern Butler a reputation for unrivaled lifestyle management.

Internationally educated, with a lifetime of experience in the rich traditions of European luxury hospitality, Mario Seiler has worked with the finest hotels and individuals of distinction worldwide. His comprehensive knowledge of finance, personnel management, and seamless operations inform the core systems and day-to-day workings of Modern Butler. A global citizen and one of the most sought-after estate managers in the world, he is widely respected for his exquisite taste and legacy of impeccable service.

Modern Butler partners with Thiel International Security Services to provide personalized security services to individuals, properties, and events. Hayden Thiel has been in the private security industry since 1996, originally in South Africa, then in London, England, and for the past decade in California. During his career, he and his firm have provided protection to private families, royalty, political figures, events, and a wide range of A-list athletes and entertainment celebrities. He has worked alongside the LAPD, NYPD, FLPD, LA SWAT, DHS, and Secret Service, among other agencies, attaining invaluable experience that enables Thiel International Security Services to offer the highest quality security services to Modern Butler’s clientele.