<p style="line-height: 18.9091px;">Warburg Pincus LLC, the New York private-equity firm, has hired a senior banking executive to help find its first acquisition in Turkey. Murat Mergin is joining the firm, where former Treasury Secretary Timothy Geithner is president, after more than 20 years at Turkiye Garanti Bankasi AS, Turkey's largest lender by market value.</p>