Allied World Assurance, a global provider of property, casualty and specialty insurance and reinsurance solutions, has named Barry Zurbuchen as chief risk officer. He succeeds Ralph Rathjen, who is retiring.

Previously, Zurbuchen was senior vice president of modeling and corporate pricing for the Bermuda-based company. In his new role, he will oversee the global enterprise risk management for the insurer, along with ensuring compliance with regulators and the European Union's Solvency II regulatory framework. Zurbuchen also will continue to oversee the economic capital model and the catastrophe modeling for the insurer.