Société Générale has hired two bankers from its Paris-based equity derivatives business. Selim Mehrez leaves Goldman Sachs to become head of pricing and new products for equity derivatives in Europe. He will report to Arnaud Sarfati, head of engineering, equity derivatives, Europe.He replaces Emmanuel Nai, who has been appointed head of engineering for equity structured products. Additionally, the French bank has hired Arié Boleslawski to undertake a newly-created role as head of the exotic trad