John Debattista is a Certified Public Accountant and Registered Auditor. Prior to Zampa Debattista, John occupied the post of audit manager in a medium sized audit firm where he developed a specialisation in the financial services industry and remote gaming sector.

John is one of the founding partners at Zampa Debattista and heads the Assurance function of the office. He is the IFRS leader and acts as an advisor on highly technical IFRS issues.
John lectured at the final stages of the ACCA, namely the Corporate Reporting paper. John also lectured the ACA course for the ICAEW, Institute Chartered of Accountants for England and Wales, namely the Corporate Reporting paper. John is also a speaker in various audit and accounting seminars delivered by a number of institutes in Malta. He also lectured the Diploma in IFRS provided by the Malta Institute of Accountants (DipIFR).

John has also worked abroad on a number of assignments which mainly relate to gaming and financial services.

Matthias graduated from the University of Malta in 2020 upon completing the Master’s Degree in Accountancy. Since 2018, he has been a part of Zampa Debattista. Initially joining the Audit department as an Audit Junior, he was eventually promoted to the role of a Team Leader within the same department. His work experience exposed him to assurance assignments related to various types of licensed funds, financial service providers, pension funds, pharmaceuticals, shipping, and retail. In 2024, after obtaining the Certified Anti-Money Laundering Specialist Certificate issued by ACAMS, he further specialized in Compliance (AML) and currently holds the position of Senior Compliance Team Leader.