Jack Sonnenschein, former vice president of enterprise compliance risk management at American Express, rejoined Citigroup in May as managing director and chief auditor of compliance.

During his four years as vice president of enterprise compliance risk management at American Express, Sonnenschein implemented global compliance risk management program for new Bank Holding Company including risk assessment, monitoring, testing, training, communication and business leadership engagement.

Prior to American Express, Sonnenschein served as managing director and global head of AML audit at Bank of New York Mellon. Past positions include director of AML risk management initiatives at Citigroup; vice president and client service partner at JP Morgan Chase; and audit services manager at Deloitte.