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Brian O'Callaghan

Partner, Head of Audit & Assurance

Brian O’Callaghan is the Deloitte Ireland Audit & Assurance leader, with responsibility for the provision of professional services to a broad range of the firm’s major national and international clients.

Brian has more than 25 years’ experience operating primarily in the financial services industry, with a particular focus on the provision of assurance and advisory services to clients in the aviation finance, structured finance, banking, and insurance sectors.

Brian previously held the role of Deloitte Ireland's Risk & Reputation leader, and was responsible for all regulatory, public policy, risk and reputation matters pertaining to Deloitte in Ireland.

Brian serves on the Executive Committee of the firm.