Our leadership team
MSD Ireland Country Leadership Team
Our leaders guide our mission to save and improve lives around the world. Our country leadership team manages the business of MSD Ireland. These top leaders, representing diverse areas of the company, meet regularly to review our goals and progress.
Mairéad McCaul
Managing Director, MSD Ireland (Human Health)
Mairéad was appointed Managing Director of MSD’s Human Health business in Ireland and Head of MSD Ireland’s Country Leadership Team in 2020.
Mairéad joined MSD in 2007 and held a number of roles in pharmaceutical and diagnostic sales, marketing and commercial operations and has gained extensive experience as a business unit director across a broad range of therapy areas.
Seán Owens
Plant Manager, MSD Ballydine, Co. Tipperary
Seán is Plant Manager for MSD Ballydine and was appointed to this role in 2022.
A member of MSD Ireland’s leadership team, Seán has worked with MSD since 1992 in a number of positions across the Ballydine site and across External Manufacturing Small Molecule Operations.
Liam Dunne
Plant Manager, MSD Biotech, Dublin
Liam is Site Lead at MSD Biotech and was appointed to this role in September 2021.
A member of MSD Ireland’s leadership team, Liam has worked with MSD since 2002 in a number of positions across the USA and Ireland.
Mark Nolan
HR Director, MSD Ireland
Mark is Executive Director and HR Lead at MSD Ireland. He was appointed to this role in 2021. He is responsible for leadership of the HR function and support across all the Irish sites.
A member of MSD Ireland’s leadership team he also provides strategic HR support to the Biologics Executive Leadership Team. Mark has held a number of senior HR positions in Ireland’s pharmaceutical sector over the past 20 years.
Matt Maher
Plant Manager, MSD Brinny, Co. Cork
Matt is AVP, Plant Manager at MSD Brinny and was appointed to this role in 2020.
A member of MSD Ireland’s leadership team, Matt has worked with MSD since 2003 in a number of positions across the sites in Ireland.
Marie Martin
Site Lead, MSD Carlow
Marie is Site Lead at MSD Carlow and was appointed to this role in September 2019.
A member of MSD Ireland’s leadership team, Marie has worked with MSD since 2008 in a number of positions across Ireland and Europe. Prior to joining MSD, Marie held leadership roles in multiple pharmaceutical and engineering companies across Ireland.
Eva Gallagher
Plant Manager, MSD Dunboyne, Co. Meath
Eva is AVP and Site Lead at MSD Dunboyne Biologics. A member of MSD Ireland’s leadership team, Eva has worked with MSD since 2011 in a number of positions across sites in Ireland.
MSD Dunboyne Biologics is a new world-class biotechnology site that began manufacturing in 2021. The site plays a pivotal role in the manufacture of MSD’s biologics-based medicines.
Fergal Morris
Managing Director, MSD Ireland (Animal Health)
Fergal has been General Manager of MSD Animal Health in Ireland since 2017.
Fergal started his career as a veterinary practitioner in 1995 working initially in Wales, England and Offaly.
Fergal joined MSD Animal Health in the UK in 1998 and moved to the company’s Irish business in 2001 when he was appointed head of ruminants in 2008.
Rachael Ryan
Finance Director, MSD Ireland
Rachael is Finance Director for Ireland and was appointed to this role in January 2022. Rachael started her career as a Chartered Accountant and Chartered Tax Adviser.
A member of MSD Ireland’s leadership team, Rachael has worked with MSD since 2010 in a number of positions across the UK and Ireland.
Dawn Carty
Corporate Communications Lead, MSD Ireland
Dawn is Associate Director, Corporate Communications for MSD Ireland and was appointed to this role in 2021.
A member of MSD Ireland’s leadership team, Dawn has worked in a number of senior roles within the pharmaceutical sector for almost 20 years. Dawn has led communications functions at Irish, EMEA and global levels.
Malcolm Casey
IT Country Lead, MSD Ireland
Malcolm is AVP, IT – Global Biologics/Sterile and Global Pharmaceutical Operations. He was appointed to this role in 2021.
A member of MSD Ireland’s leadership team and a senior global leader in the business, Malcolm has worked in a number of positions in MSD since he joined the company in 2009. Prior to joining MSD, Malcom held leadership roles in PWC, IBM and EPC.
Barry Mulcahy
VP of Operations – Global Science, Engineering and Commercialisation, MSD
Barry is VP of Operations – Global Science, Engineering and Commercialisation. He has responsibility for the Post OQ delivery of the large capital projects in Biologics and Vaccines. He was appointed to the role in 2020.
A member of MSD Ireland’s leadership team, Barry has worked with MSD since 1988 in a number of positions across the sites in Ireland.