Mary was appointed Group Chief Executive Officer in August 2020. She joined Mainstream in 2009 and she held the role of Group Chief Financial Officer since 2017. She was appointed to Mainstream’s Board of Directors in 2019 and is a member of the Chief Executive Safety Committee, the Risk and Investment Committee and the Corporate Social Responsibility Committee.

Mary has graduate and post-graduate qualifications from UCD and is a Fellow Chartered Accountant (FCA) and Chartered Tax Adviser (CTA). She is an advocate and spokesperson on gender diversity and participated as a mentor for the Global Wind Energy Council’s (GWEC) Women in Wind programme in 2019.

Prior to joining Mainstream, Mary held senior-level positions in finance and corporate tax in PricewaterhouseCoopers and Trinity Biotech Plc.