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Deloitte Ireland leadership team


Our Partners

Deloitte Ireland partner group

Learn more about the Deloitte Ireland partner team providing audit, tax, consulting and corporate finance services to both public and private clients across Ireland.

Brendan Jennings

Managing Partner
Brendan is Managing Partner of Deloitte Ireland. He has been a partner with the firm since 1993. Prior to his present position Brendan was National Partner in Charge of Audit Services for the Irish firm with responsibility for the provision of professional services to a range of national and multinational clients. Brendan also headed up the firm's consumer business industry group. Brendan has served on the executive of the firm since 2002 and is a fellow of Chartered Accountants Ireland.

Gerry Fitzpatrick

Head of Audit
Gerry is Head of Audit and has extensive experience with boards, audit committees and regulators of listed companies and regulated entities. Gerry has led numerous audits, delivering new perspectives and challenges following audit transition and delivering control and process design input. Gerry specialises in corporate governance, audit and risk management services for financial institutions.

Padraig Cronin

Head of Tax
Pádraig Cronin is Head of Tax in Deloitte Ireland. Padraig has over 20 years of corporate tax experience advising on a wide range of global tax issues. He specialises in advising multinationals, high growth Irish companies and private equity houses on mergers and acquisitions and general corporate tax matters.

David Hearn

Head of Consulting & Manufacturing
David is Head of Consulting in Ireland, in addition to heading up the enterprise applications team. He brings over 25 years of experience in ERP deployment, systems integration, cost reduction and business transformation. His clients include large Irish and multinational companies in the life sciences and consumer business industries as well as semi-state and public sector organisations. David is a member of the Deloitte Consulting Global Leadership Team.

Martin Reilly

Head of Corporate Finance
Martin is a banking advisory/financial audit services partner and leads our Corporate Finance team. Martin specialises in the provision of assurance and advisory services to clients in the banking and securities sector. He has significant audit experience, he has specialised in the financial services sector and has worked on a large number of advisory assignments across a range of financial institutions including building societies, stockbrokers and credit unions.

Kevin Sheehan

Head of Consumer Business
Kevin is Head of Consumer Business at Deloitte and leads the Best Managed Companies Awards Programme. He has more than 15 years audit and advisory experience in a variety of industries including manufacturing, retail and distribution, and bloodstock. He also services a number of large property development and construction groups. In addition, Kevin specialises in the provision of audit and transaction support services to a number of listed natural resource and exploration groups.

Michael Flynn

Head of Energy and Resources
Michael is a corporate finance partner and leads our debt advisory practice. Michael is also Head of Energy and Resources. He specialises in advising public, private and banking clients on debt raising, restructuring and refinancing for both project finance and corporate debt transactions including the development of government and infrastructure assets and energy and renewable energy assets.

David Dalton

Head of Financial Services
David Dalton is head of Deloitte’s financial services practice.  His experience includes customer and market strategy, business and operating model design and transformation change. David also leads Deloitte’s Analytics practice in Ireland.

Lorraine Griffin

Head of Life Sciences
Lorraine leads Deloitte’s M&A tax practice as well as the multidisciplinary life sciences practice. She has worked and advised on a range of significant M&A transactions in recent years, both on the buy and sell side. She also advises a significant number of indigenous and multinational life sciences organisations on a broad range of tax issues including structuring of business operations in Ireland, transfer pricing, R&D tax credits, human capital tax issues, and debt financing arrangements.

David O’Flanagan

Head of Healthcare

David O'Flanagan is the Partner leading Deloitte’s Heathcare industry group. 

He has extensive experience in advising the public and private health care sectors on a range of strategic and financial issues.


Harry Goddard

Head of Public Sector
Harry is head of Technology Integration of Deloitte Ireland. He has extensive experience leading the implementation of technology rich change programmes in the public sector and retail financial services industry. He has worked with national and local government in Ireland and has advised a broad range of public sector organisations in change and transformation.

Padraic Whelan

Head of Real Estate and Infrastructure
Padraic is a tax partner in the Irish corporate tax practice, advising on both domestic and international tax transactions. He advises a number of large Irish companies and is Head of Real Estate and Infrastructure.

Joan O’Connor

Head of Technology, Media and Telecommunications
Joan is a senior international tax partner based in Dublin and is also Head of the TMTE Group in Ireland. She has over 25 years international tax experience in Dublin and London covering a wide range of industries including life sciences, telecoms, technology, media and energy. Joan works with Irish plcs and inbound multinational clients from the US, UK, Europe and Japan on outbound and inbound transactions, as well as using Ireland as a base for European and worldwide business operations.

Philip Barton

Audit Partner
Philip has been with Deloitte for over forty years and has been a partner for 30 years. As well as being an assurance and advisory partners, he is also Chief Information Officer of the Irish firm and Chief Information Officer of Deloitte EMEA. Philip has a broad range of clients and is responsible for the provision of audit, accounting and taxation services to several of the firm’s major clients.

Pascal Brennan

Tax Partner
Pascal is a partner and national leader of the indirect taxes group. He has over thirty years of experience and having worked both in the Revenue Commissioners and private practice during his career is uniquely placed to bring insight from both sides of any tax issue. Pascal was listed as one of the worlds leading indirect tax advisors and leaders by International Tax Review in 2013.

Declan Butler

Tax Partner
Declan Butler is a tax partner specialising in international tax, with a focus on US and European inward investment into Ireland and in structured finance and financial services. He currently advises a wide range of multinationals in the healthcare, high technology and financial services industries.

Pieter Burger

Tax Partner
Pieter is a tax partner in the financial services tax practice and leads the Irish firm’s aircraft leasing and finance group. Pieter also specialises in banking & treasury and structured finance.

Kevin Butler

Audit Partner
Kevin is a partner in Deloitte’s audit practice and is based in the Cork office. He has over 11 years of experience in professional services and primarily works with large corporate organisations and fast growing private companies across a range of industries including energy, manufacturing, agribusiness and shared services. Kevin has significant experience supporting companies with complex accounting matters under various financial reporting frameworks, particularly IFRS.

David Carson

Forensic and Restructuring Services Partner 
David leads Deloitte’s Forensic team. He has led investigation assignments covering allegations of fraud, theft and regulatory issues. David provides litigation support and has acted as an expert witness on numerous occasions. He has a background in Corporate Finance and previously led the Restructuring Services group and M&A Transaction Services group. David has over 20 years’ experience in corporate restructurings, independent business reviews and insolvencies.

Gerard Casey

Gerard is a partner based in our Regional Practice, with 13 years’ experience serving multinational, Irish listed and Irish indigenous entities. He has a particular focus in the food and beverage, technology and exploration and mining sectors. He has significant experience in a range of financial reporting frameworks including IFRS, Irish GAAP, US GAAP and new Irish GAAP (FRS 101/102). He has advised a number of companies in relation to Sarbanes - Oxley readiness and attestation.

Tom Cassin

Audit Partner
Tom is a partner in the audit & advisory practice and leads the delivery of audit and assurance services to SMEs from the Dublin office. He has extensive audit and business advisory service experience in serving a broad range of large national and international clients. He is familiar with US GAAP/Irish GAAP reporting reconciliations and has extensive experience in serving high growth companies. Tom has served on technical committees and has been involved in lecturing, recruiting and training.

Patrick Cullen

Tax Partner
Pat is a partner in Deloitte Private. He completed a four year term as Managing Partner of Deloitte Ireland on 31st May 2011, and is also former Head of Tax. Pat has over 25 years of experience advising individuals and companies on personal and corporate tax issues, at both a domestic and international level. He has particular expertise in the area of property transactions, business acquisitions and disposals, business succession planning and insurance taxation.

John Doddy

Corporate Finance Partner
John is a partner in the Corporate Finance Advisory Services Division of Deloitte. Before joining Deloitte in 2010 John spent ten years in corporate banking. During his time in banking John managed portfolios of large corporate and SME loans. Since joining Deloitte John has acted as company side advisor on a large number of new debt raisings, refinancings and debt restructurings in a range of sectors.

Alan Flanagan

Consulting Partner
Alan is a consulting partner based in the Dublin office with over twenty years of experience specialising in the area of financial management and transformation. Alan is a member of our EMEA Finance Transformation Leadership Team. Prior to joining Deloitte in 1998, Alan worked in industry for Diageo plc in a variety of finance function roles across the group. Alan has successfully completed numerous finance projects for multinational corporations, indigenous plcs and large private companies.

Brian Forrester

Financial Services Partner
Brian is a Partner in our Financial Services Audit team. His primary expertise is in the delivery of audit and advisory services to clients in the investment management industry. Brian has over 18 years experience in the area and has worked in three key investment management jurisdictions, namely Ireland, the Channel Islands and Grand Cayman. Brian has led a number of risk and operational reviews across the sector and has extensive experience of due diligence projects for large transactions.

Mary Fulton

Audit Partner
Mary Fulton provides advisory and assurance services to insurance and banking clients with a focus on regulatory and accounting matters such as Solvency II and IFRS 4. She has extensive experience in advising financial services enterprises setting up business in Ireland and leads assignments in strategy, risk, governance and compliance.

Glenn Gillard

Financial Services Partner
Glenn Gillard leads the firm's offerings in the insurance area. Glenn has extensive experience working with domestic, cross-border and international insurers. His experience includes areas such as external audit, internal audit and controls assurance, regulatory projects and licence applications. Glenn sits on the Department of An Taoiseach IFSC Solvency II Working Group and on the Accounting Committee of the Chartered Accountants Ireland.

Niall Glynn

Tax Partner
Niall is a partner in Deloitte Private advising private domestic businesses, private companies and high net worth individuals on a range of taxation issues. He has extensive experience dealing with family business succession, tax efficient investment structures, corporate reorganisations, property transactions and tax matters surrounding privately held wealth. He is a former examiner and lecturer of the Irish Taxation Institute.

Michael Hartwell

Financial Services Partner
Michael leads our multidisciplinary investment management team which provides audit, assurance, tax, consulting and regulatory advice to all aspects of the investment management industry. Michael's area of expertise is serving this industry, with particular focus on alternative investment and mutual funds. Michael has assisted a number of international financial institutions on various special assignments including, accounting investigations, risk and regulatory compliance reviews.

Richard Howard

Audit Partner
Richard is a partner working mainly in the areas of audit and advisory with a focus on FDI and technology, media and telecoms. Richard leads the Technology Fast 50 initiative in Ireland which recognises annually the fastest growing indigenous technology companies. Both through his work in the Deloitte Technology Fast 50 and Deloitte Best Managed Companies Programme, Richard is also involved in working with growing indigenous companies.

Cormac Hughes

Consulting Partner
Cormac is lead partner for the firm's strategy & operations and Human Capital Management consulting services. He has worked with Deloitte for 16 years and specialises in operations consulting and business performance improvement. Cormac is an experienced programme manager with a track record of delivering large and complex implementations across industries. Cormac has a BA in Management Science & Information Systems Studies and is a member of the Institute of Management Consultants and Advisors.

Conor Hynes

Tax Partner
Conor is a tax partner with Deloitte in Dublin. Conor has more than 18 years of experience advising clients in financial services and international tax. In particular he has advised extensively on transactions in the insurance, banking and leasing sectors. He has provided advice to many clients on inbound and outbound investment, optimising the use of Ireland’s corporate tax rate, tax planning with the aim of maximising tax efficiency and minimising tax cost.

Brian Jackson

Financial Services Partner
Brian is a partner in Deloitte’s financial services audit group with a particular focus on the provision of audit and advisory services to clients in the investment management sector. Brian works on audit engagements for Irish and offshore funds and multiple advisory projects locally and internationally. Prior to joining Deloitte in 2002 Brian worked extensively in the financial services sector in Ireland and the UK.

Louise Kelly

Tax Partner
Louise Kelly is a partner in the tax practice and specialises in corporate and international tax. She works very closely with our client teams to deliver world-class capabilities and high quality service to clients, delivering the insights they need to address their most complex business issues. Louise brings over 14 years’ experience to the role having joined the firm in 2001 and led Deloitte's Irish desk in New York during 2011 and 2012.  

David Kinsella

Enterprise Risk Services Partner
David is a partner in Deloitte’s Enterprise Risk Services practice specialising in the provision of internal audit and risk management services to clients in the financial services, corporate and public sectors. He leads a number of significant internal audit co-sourcing engagements and has also led several risk advisory and special engagements for a host of national and international clients.

Marguerite Larkin

Audit Partner
Marguerite leads our consumer business and technology audit group and is a member of the firm’s leadership team with responsibility for clients and markets and the firm’s industry programmes. She has responsibility for the provision of professional services to a broad range of the firm’s major national and international clients and specialises in advising public companies and large private companies on finance, governance matters and the provision of audit services.

Donal Lehane

Consulting Partner
Donal has over 14 years of experience in providing advisory and consulting services with a particular focus on large scale transformation programmes within the financial services industry. Prior to working in consulting, Donal was a finance manager for six magazines at Conde Nast Publications in New York, and held a number of finance and accounting positions at Aer Lingus in both New York and Dublin. Donal received his MBA (Finance) qualification from Fordham University, New York.

Gerard Lyons

Audit Partner
Gerard is Regional Partner-in-Charge with responsibility for offices in Cork and Limerick. He also leads the Enterprise Risk Services regional offering and is an audit partner. Gerard and his team support clients in risk management, corporate governance, information and technology risk, regulatory compliance and internal audit. He also leads the Higher Education Team in Ireland and is a member of the Deloitte Global Education Team.

John McCarroll

Financial Services Partner
John is a partner in Deloitte’s financial services practice and leads the corporate treasury audit and advisory services team. He has 12 years experience in corporate treasury, banking audit and advisory gained both in Ireland and internationally.

Eimear McCarthy

Audit Partner
Eimear is a partner in the Financial Services Group of Deloitte in Dublin, specialising in the provision of assurance and advisory services to clients in the insurance sector. Eimear has been with the firm for over 10 years and has wide ranging experience in risk and accounting services. Eimear is an experienced coordinator of both international and domestic engagements, dealing with a variety of accounting frameworks, and is the IFRS 4 Phase II Irish lead for the Deloitte EMEA IFRS 4 group.

Colm McDonnell

Enterprise Risk Services Partner
Colm leads Deloitte’s Enterprise Risk Services practice in Ireland specialising in security risk, regulatory and control assurance and consulting assignments. Colm and his team support clients in risk management, information and technology risk, regulatory compliance and internal audit. Colm has been with Deloitte since 1992 and has worked across all business sectors.  Colm is the Treasurer of the Dublin Chamber of Commerce and he is also a Council member. Colm is a Board member of St. Patrick's Hospital Foundation and he is also a member of the Barretstown Legacy Fund Committee.

Christian MacManus

Financial Services Partner
Christian is an audit partner in our financial services practice. He specialises in the investment management sector working with a variety of asset managers and third party service providers. He provides clients with additional advisory services in relation to valuation issues/principles, corporate structures and application of GAAP.

Shane Mohan

Consulting Partner
Shane is a Consulting partner based in our Dublin office. He specialises in finance transformation, shared services and outsourcing advisory. His clients include multi-national corporations, public and private companies, Government Departments and commercial State bodies. Shane’s experience spans multiple industries and sectors. Shane also leads the Deloitte CFO Programme in Ireland.

Honor Moore

Audit Partner
Honor is a partner in Deloitte’s audit practice and is based in the Cork office. She has extensive experience in the delivery of audit and advisory services to both multinational and indigenous companies across a broad range of industries and her specialities include external audit, IFRS, and Sarbanes Oxley.

Simon Murphy

Consulting Partner
Simon is a partner in Deloitte’s technology integration group. He has extensive experience in architecting large scale IT systems to meet client’s business needs. Simon’s core skills include enterprise architecture, information architecture, service oriented architecture, application architecture, and integration. Simon is certified by the Open Group as a master certified IT architect.

Daniel Murray

Audit Partner
Daniel is an audit partner specialising in the provision of assurance and advisory services to both multinational and Irish indigenous companies across a broad range of industry sectors, most notably technology, retail and distribution, manufacturing, energy, aviation and life sciences. He has experience of accounting under various accounting standards including IFRS and US GAAP. He also has extensive M&A advisory and due diligence transaction execution experience.

Ciarán O'Brien

Audit Partner
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.

Brian O'Callaghan

Audit Partner
Brian is a financial services director in Deloitte’s Audit practice. As well as three years in Australia working in the Insurance and structured finance industry Brian’s experience includes managing the audits of significant clients in the financial services industry. These companies are involved in a range of areas including life assurance, non-life insurance, captive insurance, banking, reinsurance and stockbroking.

Dan O'Donovan

Tax Partner
Dan is a partner in our tax services department and is based in our Limerick office. He has extensive experience in providing specialist corporate tax advice to a range of clients in the IT, manufacturing, distribution and retail sectors. He has particular expertise in group restructurings, use of Ireland to maximise the benefit of its low corporate tax rate and the tax issues associated with property related transactions. Dan holds a B.Comm from University College Cork.

John O'Flynn

Tax Partner
John is a partner in Deloitte’s tax services department and is based in the Cork office. He has extensive experience advising public and private sector clients on a wide range of tax issues including international tax, group reorganisation, succession planning, and private client advisory.

Emer O'Shaughnessy

Audit Partner
Emer is a partner in our Consumer and Technology Business department with over 12 years’ experience serving mainly plc and large corporate clients, including multinationals. She deals with a wide variety of accounting frameworks including IFRS, Irish GAAP, US GAAP and new Irish GAAP (FRS 101/102) and industries including food and beverage, life sciences and telecommunications. Emer is an experienced coordinator of international audits, both inward and outbound.

Deirdre Power

Tax Partner
Deirdre is head of our investment management advisory group and is a tax partner specialising in advising financial services clients in the areas of investment management and funds, leasing, banking, securitisation and structured finance. She leads the firm's financial services tax practice in addition to leading the Investment Management Advisory (IMA) group.

Michael Sheehan

Corporate Finance Partner
Michael is a corporate finance partner and he leads this service line in our regional offices in Cork and Limerick. However Michael also acted as a lead taxation partner for many years. Michael has extensive experience in M&A, refinancing and corporate reorganisations and restructuring from both a taxation and corporate finance point of view. He delivers services to a very broad range of clients across the technology, distribution, manufacturing, services and property sectors.

Cathal Treacy

Audit Partner
Cathal joined Deloitte in 1998 and moved to the Limerick office in 2000 where he is now a partner in the audit and assurance practice. He has significant experience in leading audit and advisory services to both multinational and indigenous organisations.

Niall Walsh

Audit Partner
Niall is an audit partner responsible for the accounting and auditing of pension schemes. Niall is also responsible for the audit technical team and has a range of experience providing audit services to other multinational clients in the technology and services industries.

Joanne Whelan

Tax Partner
Joanne is Head of Private Clients and leads the corporate and legal service line in the firm. She has extensive experience advising family business, private companies and individuals on the legal and taxation issues arising on the transfer of wealth to the next generation and related issues. She advises private and corporate clients on a range of other tax and legal issues, with a particular focus on stamp duty issues arising on corporate reorganisations and mergers.

Tom Kavanagh

Partner Restructuring Services

Tom Kavanagh is a Partner in our restructuring services at Deloitte.  Tom is the founding partner of kavanaghfennell, a leading Irish specialist insolvency and advisory firm which was acquired by Deloitte in June 2014. As such Tom’s expertise covers a wide range of restructuring services including corporate restructuring; receiverships; advisory; examinerships; liquidations and forensic accounting. for many of Ireland’s leading financial institutions including Bank of Ireland, AIB, Ulster Bank, NAMA, Lloyds, IBRC, KBC, Zurich, and Investec.

David Van Dessel

Restructuring Services Partner

David began his professional career in the Corporate Recovery Department of Deloitte & Touche, Dublin in 1990, where he trained for 5 years with Insolvency Practitioner, John Donnelly. Most of this time was spent working on Corporate Recovery Assignments, which involved the management and sale of companies that had hit a cash crisis. During this time David was also seconded to the Consultancy Division of the firm to assist on a number of Forensic Accounting assignments. In 1995 David left Deloitte & Touche and worked for two years with Tom Kavanagh and Ken Fennell before Kavanagh Fennell was established in 1997.

Ken Fennell

Partner Restructuring Services

Ken Fennell is a Partner in our restructuring services at Deloitte. Ken is a founding partner of kavanaghfennell, a leading Irish specialist insolvency and advisory firm which was acquired by Deloitte in June 2014. Ken has over 20 years experience in restructuring and insolvency assignments for all the major financial institutions including KBC, AIB, ACC, NAMA, BOI. Ken is recognised as one of Ireland's leading insolvency professionals with in excess of 300 insolvency appointments. Ken has worked on a wide variety of assignments in both the large and SME business sectors. Ken is a regular contributor in the media on insolvency related matters.

Tom Maguire

Tax Partner

Tom joins Deloitte as a partner in the Tax practice and will lead the firm’s Tax Policy and Technical Services team. He will work very closely with our client teams to deliver world-class capabilities and high quality service to clients, delivering the insights they need to address their most complex business issues. 

Tom brings over 15 years of experience to the role, providing tax advice on a wide range of domestic and international corporation tax matters. He is highly regarded within the tax profession as a deep technical specialist, his extensive experience includes having authored and co-authored leading texts on matters such as the Irish tax impact of IFRS, certain financial services transactions and general anti-avoidance. Tom will lead his team to help enable Deloitte to deliver deep knowledge of tax and statutory requirements as well as a breadth of experience applying them in practice worldwide.

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