Dr Valletta is the Managing Partner in the oldest Maltese law firm - Farrugia, Gatt & Falzon. His areas of legal practice are: Company Law, Property Law, International Trade and Commercial Agreements, International Banking and Finance, Creation of Tax Structures, Mergers & Acquisitions, Anti-trust, European Union law, Shipping, Aircraft Registration, Operation and Finance.
His clients have included the European Bank for Reconstruction and Development, Rothmans of Pall Mall, British American Tobacco, Continental Grain, Hill Samuel Bank, Wallems Ship Management, McDonald's Corporation, Kelloggs, De Vere, Teradyne, Astamedica Group, the Government of China, MCM Aircraft Maintenance Munich, the Libyan Government and others.
He was involved in international mediations and arbitrations, as well as in securing various commercial deals and contracts with European countries, China and Libya.
Besides his extensive legal work, he has held senior positions in a number of major Italian companies, including Fininvest Group, Parmalat and Jacorossi.
Dr Valletta holds a correspondent status with the worldwide American law firm Baker & Mckenzie.