Mr. Mercieca is the co-founder and Finance Director of the QLZH Group. He is a warranted, certified public accountant, and a Fellow of the Association of Certified Chartered Accountants and the Malta Institute of Accountants.

Mr Mercieca successfully read for a Diploma in Taxation and an Advanced Diploma in International Taxation, and has in the past formed part of the tax committees of both the Malta Institute of Taxation and the Malta Institute of Accountants.

Mr Mercieca previously held the position of Senior Manager at Deloitte Malta; having originally joined the firm's audit practice fourteen (14) years prior.