[1][2][3] Gallo earned a degree in Organizational Development from Bocconi University in Milan.
[4] He is a Chartered Fellow of the Chartered Institute of Personnel and Development (FCIPD) in the United Kingdom and a certified transformational coach from Georgetown University in Washington, D.C.[5] In 1995, Gallo began his career at Citigroup, where he worked in Milan, London, and New York, gaining experience in finance and human resources.
[8] In 2014, Gallo became the chief human resources officer at the World Economic Forum (WEF) in Geneva.
[9] During his tenure, he was responsible for talent management, leadership programs, and organizational culture initiatives.
[10] Gallo has also been an associate professor at institutions such as Hult Ashridge Business School in the United Kingdom and Bocconi University in Italy, where he has taught courses on leadership, ethics, and organizational behavior.