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Department of Defence - Who Does What

  • Ó: An Roinn Cosanta

  • Foilsithe: 15 Meitheamh 2023
  • An t-eolas is déanaí: 12 Aibreán 2025

Secretary General

Jacqui McCrum
Jacqui McCrum
Secretary General of the Department of Defence

Assistant Secretary, Corporate Affairs

Aileen Nolan
Aileen Nolan
Assistant Secretary Corporate Affairs

Direct reports

Dermot Ryan
Dermot Ryan
Principal Officer, Communications
Bernie Dempsey
Bernie Dempsey
Principal Officer, Corporate Support Branch
David Geraghty
David Geraghty
Principal Officer, Finance Branch - Finance and Accounts
Jarlath Loftus
Jarlath Loftus
Principal Officer, Finance Branch - Payroll and Pensions
Ronan Mulhall
Ronan Mulhall
Principal Officer, Human Resources Branch
Eimear Lavelle
Eimear Lavelle
Principal Officer, Office of the Secretary General
Helen Feeney
Helen Feeney
Assistant Principal Officer, Internal Audit Section
Brigitta O'Doherty
Brigitta O'Doherty
Principal Officer, Military Aviation Authority

Assistant Secretary, Defence & Security Policy

Bernie Maguire
Bernie Maguire
Assistant Secretary, Defence & Security Policy

Direct reports

Brian O Meara
Brian O'Meara
Principal Officer, International Security and Defence Policy Branch
Killian Magee 2
Killian Magee
Principal Officer , National Security & Defence Policy
Billy Tuohy
Billy Tuohy
Principal Officer- Legislation Branch
Lisa Hennessy
Lisa Hennessy
Principal Officer- Legislation Branch
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Barry Conroy
Principal Officer- Brussels Office
Margaret Stanley 2
Margaret Stanley
Principal Officer, Office of Maritime Security

Assistant Secretary, Strategic Change & Capability Development

Eamonn Murtagh
Eamonn Murtagh
Assistant Secretary for Strategic Change & Capability Development

Direct reports

Melanie Connolly
Melanie Connolly
Principal Officer, Capability Development Unit
Cathal Duffy
Cathal Duffy
Principal Officer- Procurement & Acquisitions Branch
Gráinne Guinan
Gráinne Guinan
Principal Officer- Procurement & Acquisitions Branch
Fiona Lafferty
Fiona Lafferty
Principal Officer- Procurement & Acquisitions Branch
Liam Morrow
Liam Morrow
Principal Officer, ICT/Enterprise Branch
Derek Byrne
Derek Byrne
Principal Officer, ICT/Enterprise Branch
David Byrne
David Byrne
Principal Officer- Change Management Office
James Ryan
James Ryan
Principal Officer- EU Industry Engagement

Assistant Secretary, Defence Capability People Policy

Clare Tiernan
Clare Tiernan
Assistant Secretary, Defence Capability People Policy

Direct reports

Carol Bourke
Carol Bourke
Principal Officer, Defence Forces Personnel Policy Branch
Philip O'Sullivan
Philip O'Sullivan
Principal Officer, Litigation Branch
Jillian O'Keeffe
Jillian O'Keefe
Principal Officer, Conciliation and Arbitration Branch
Siobhan Joyce
Siobhan Joyce
Principal Officer, Capability People Policy Unit
Micheal O'Raghallaigh
Mícheál Ó Raghallaigh
Principal Officer, Capability (People) Development & Support Branch

Assistant Secretary (Acting), IRG Implementation

Stephen Hall Update
Stephen Hall
Acting Assistant Secretary, IRG Implementation Division

Direct reports

John Doyle
John Doyle
Principal Officer- IRG Implementation Division- Inquiries Statutory & Non Statutory
Jennifer Hanrahan
Jennifer Hanrahan
Principal Officer - IRG Implementation
Marianne Nolan
Marianne Nolan
Principal Officer, External Oversight Body

Director, Emergency, Operations and Infrastructure Oversight

Jason Kearney
Jason Kearney
Director of Emergency, Operations and Infrastructure Oversight

Direct reports

Deirdre Gallagher
Deirdre Gallagher
Principal Officer, National Operations Policy
Cep Carty
Cep Carty
Principal Officer, Civil Defence Branch
Eoin McDonnell
Eoin McDonnell
Principal Officer, Property Management Branch
Kealan McMoreland
Kealan McMoreland
Principal Officer, Office of Emergency Planning Branch

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