Mark O'Mahony is an experienced professional in programme and project management, currently serving as a Member at Posterity Milestone Consortium Limited since September 2023. O'Mahony has held various significant roles, including Associate Consultant at Kanso Design and Programme Director for HR Transformation at dentsu international. Previous positions include Programme Manager for M&A at Centaur Media Plc, Transformation Project Manager at Centrica, and Programme Change Management Lead at HSBC, showcasing expertise in managing large-scale transformations and change management initiatives in both private and public sectors. O'Mahony's educational background includes a Foundation Degree in Leadership and Management and a BA (Honours) in Business Studies from The Open University.

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