ONE Sotheby’s International Realty has added luxury real estate advisor Julian Johnston, bringing more than $10 billion in career sales and more than $400 million in active listing inventory to the brokerage. Johnston, who specializes in Miami Beach waterfront and ultra-luxury estate properties, joins the firm’s Miami Beach office and will continue serving clients from Golden Beach to Coral Gables. “Julian has built one of the most impressive luxury real estate businesses in South Florida,” said Daniel de la Vega, president and CEO of ONE Sotheby’s International Realty. Julian Johnston“Joining ONE Sotheby’s International Realty allows me to offer my clients an unmatched global advantage,” Johnston said. Originally from Adelaide, Australia, he has lived in Miami Beach for more than 25 years.