Ciarán O'Brien

Ciarán O'Brien

Partner - Audit

Ciarán is a partner in our Audit & Assurance department. He currently serves a portfolio of clients in the consumer business, energy and technology sectors. Ciarán has substantial IFRS experience, having co-ordinated the audit of the transition from US GAAP and/or Irish GAAP to IFRS for a number of companies. He has detailed knowledge of accounting issues relating to areas such as software revenue recognition, business combinations, complex financial instruments and tax accounting.

Contact us

Dublin 2 Change location


Deloitte & Touche House

Earlsfort Terrace

Dublin 2, 


Phone: +353 1 417 2200

Fax: +353 1 417 2300