Deloitte appoints nine new Partners as firm strengthens strategic leadership to unlock new opportunities in an evolving market

• The appointments reflect Deloitte Ireland’s strategy to expand capability, drive innovation and be the go-to strategic partner for clients across every sector
• “We are not just responding to change, we are helping shape it” – Deloitte CEO
• The number one professional services firm globally has also raised its ambition when it comes to building a more inclusive leadership team.
• The new partner group bring deep expertise and commercial edge, part of an intentional ambition to focus on technology, resilience and value creation. 

3 June 2025. Deloitte has appointed nine new partners across its Irish business in a move that reinforces the firm’s leadership ambition, future-facing strategy, and continued investment in top talent amid a period of unprecedented market complexity.

These appointments span Deloitte’s Technology & Transformation teams, Tax & Legal, Audit & Assurance, Strategy, Risk & Transaction Advisory, and Enabling Areas and reflect both the depth of expertise and the strategic capability required to guide clients through the most complex challenges of current times.

says Harry Goddard, CEO of Deloitte Ireland.

Deloitte is the world’s largest professional services firm, and the latest appointments in Ireland reflect the organisation’s recent strategic investment in people, innovation and future-facing capability across public and private sectors.

Four of the nine new partners are women, a reflection of progress in achieving Deloitte’s ambition of gender balance at all levels and making senior leadership a space where both men and women can thrive.  

Meet Deloitte Ireland’s 2025 New Partners
 

Ciarán Treacy, Audit & Assurance

Ciarán leads Deloitte Ireland’s Controls Assurance team and is an ACCA-qualified accountant with 20 years of experience. Since joining the firm in 2007, he has specialised in helping clients establish and mature their governance, risk, and compliance capabilities. He leads Deloitte’s national “Future of Controls” offering and supports clients in SOX readiness, internal audit and risk control design, often working with cross-functional and international teams. His client base includes some of the firm’s most significant corporate and PLC clients.
 

Sean Gascoine, Audit & Assurance

Sean is a leader in the Investment Management team, within Deloitte Ireland’s Audit & Assurance practice. He advises some of the world’s largest asset managers and service providers, bringing particular expertise in Exchange Traded Funds (ETFs), fund structures and global investment regulations.  Also well-versed in IFRS, FRS 102 and US GAAP reporting, Sean is a member of Chartered Accountants Ireland and is known for delivering sharp client insight in an evolving sector.
 

Ailbhe Flynn, Audit & Assurance

Ailbhe is a partner in Deloitte’s Audit & Assurance practice providing audit and assurance services to clients with a focus on investment management industry. Ailbhe also has extensive experience across risk, accounting, advisory and audit services and provides advice to investment management funds and their service providers. Ailbhe is a fellow of the Institute of Chartered Accountants in Ireland and is recognised for her commercial approach, technical strength and commitment to team development.
 

Paul Kerrigan, Enabling Areas

Paul is a solicitor with over 20 years of experience in legal and risk advisory within professional services. Since joining Deloitte in 2017, he has led Deloitte Ireland’s legal and risk functions and holds additional leadership roles at the European level. His expertise supports the firm’s ability to manage complexity, uphold governance standards and enable quality across all services. Paul is a board member of LauraLynn, Ireland’s Children’s Hospice, and sits on the Audit & Risk Committee of the Corporate Enforcement Authority.
 

Grace Cunningham, Technology & Transformation

Grace is newly appointed Partner in Deloitte’s Technology & Transformation practice, with deep experience leading large-scale public sector transformation programmes. She specialises in complex business change, particularly within Health and Social Care, and has also worked across Justice and central government sectors. Grace brings an international perspective from her time in New Zealand’s public sector. She holds a Law degree from University College Cork and a Master’s in Management from University College Dublin.
 

Aisling Cronin, Technology & Transformation

Aisling is a technology transformation leader with deep sector experience in healthcare and life sciences. She supports senior executives in defining and delivering business value through digital and organisational change. Aisling works closely with technology leaders to build roadmaps, shape vision and align strategic investments. She is a graduate of Trinity College Dublin (Management Science & Information Systems Studies) and is certified in leadership, IT strategy, and data analysis. She is also an active advocate for diversity and gender equity.
 

Dominic McNeill, Tax & Legal

Dominic is a senior advisor in Deloitte Ireland’s Transfer Pricing team, with over nine years of experience in international tax and financial services. He holds a B.Sc. in Finance from Queen’s University Belfast and has earned the ADIT Transfer Pricing Certificate. Dominic has previously held senior roles in other Big Four firms and has advised clients in banking, asset management, aviation leasing, real estate, and consumer products. He contributes regularly to Irish Tax Institute training and publications and is known for his technical depth and commercial acumen.
 

Aoife Bayne, Strategy, Risk & Transactions Advisory

Aoife leads Deloitte Ireland’s Financial Risk Management offering, bringing 20 years of experience in both domestic and international banking. She specialises in prudential risk management, quantitative modelling and regulatory engagement. Her background in mathematics and financial services enables her to identify emerging issues and help clients make data-informed decisions. Aoife is known for blending strategic insight with a strong grasp of technical detail to guide clients through regulatory complexity.
 

Jake O’Sullivan, Strategy, Risk & Transactions Advisory

Jake is a senior forensic accountant with 12 years of experience helping clients across industries respond to fraud, regulatory investigations and litigation. He has led multi-jurisdictional, high-profile assignments for clients in tech, government, financial services, telecoms and beyond. Jake combines subject matter expertise with a pragmatic, tech-enabled approach. He is a member of Chartered Accountants Ireland and the Association of Certified Fraud Examiners (CFE), and holds a first-class honours degree in Commerce (International) with French from University College Cork.