Ambassador Ledda is a career diplomat and a lawyer. He is an alumnus of the University of the Philippines with degrees in Political Science and Law obtained in 1984 and 1988 respectively.

He joined the Philippine Department of Foreign Affairs in April 1990 and has served in various capacities at the Home Office in Manila and in foreign service posts in Milan, Brussels, Beijing and Macau SAR. His recent positions include:

• Assistant Secretary for Consular Affairs from April 2010 to November 2013. In recognition of his distinguished service in consular affairs, he was awarded the Gawad Mabini (rank of Dakilang Kamanong) on 26 July 2012.
• Philippine Ambassador to the Kingdom of the Netherlands and Permanent Representative to the Organization for the Prohibition of Chemical Weapons and other international organizations in The Hague from November 2013 to August 2020. He received the Knight Grand Cross, Order of Oranje-Nassau in January 2020.
• Assistant Secretary for European Affairs from December 2020 to 27 January 2023. During that period, he was designated as Philippine Representative to the ASEAN Intergovernmental Commission on Human Rights (AICHR) and Philippine ASEM SOM Leader in a concurrent capacity.

Ambassador Ledda is married to Gina Macatangay Ledda, a PhD candidate at ISS Erasmus in The Hague. They have one son.