During his tenure as CEO of Deloitte Italy, Tirelli managed 4,500 professionals and $750 million in revenue. Prior to this international role, Tirelli served as the Vice Chairman for Deloitte U.S., directly supervising its presence on the West Coast that consisted of 15 offices, 6,000 professionals and $1 billion in revenue.
In addition to his 30 years of experience with a “Big 4” accounting firm, Tirelli was the President and CEO of Herbalife International Inc., a publicly traded nutrition company that did business in 52 countries and generated $2 billion in sales.
In his current position as Vice Chairman of Professional Services, Tirelli plays an important role in advising the firm’s executive management team on strategic and client service initiatives.
Tirelli works closely with alliantTalent partners – advising them on issues such as talent attraction, development and retention strategies; leadership, succession planning and practice management.