Gareth McDermott has nearly 20 years of experience on major international construction and engineering projects worldwide, including in Ireland, the United Kingdom, mainland Europe, the Middle East, South America, Asia, and Africa, specializing in dispute resolution and forensic investigation of quantum claims. He has worked on projects of varying size and complexity in the building, civil engineering and infrastructure projects, offshore oil & gas facilities, marine, and process works sectors. 

Mr. McDermott has been appointed quantum expert on litigation, adjudication, and mediation proceedings, and has been lead assistant to the quantum expert on several major international disputes in arbitration. He regularly provides advice and opinion on matters concerning variations, defective works, delay, acceleration, disruption, termination, costs to complete, and final accounts.