Ohlmeyer was the founding Head of the School of Histories and Humanities at Trinity College Dublin, Trinity's first vice-president for Global Relations (2011–14), and Director of the Trinity Long Room Hub Arts and Humanities Research Institute (2015–20).[3][4]
Ohlmeyer has been the Principal Investigator (PI) or co-PI for 25 research and research infrastructure projects with awards totalling c. €22 million from national, European and international funders.[3]
In addition to historical research, Ohlmeyer regularly speaks on topics that relate more generally to the importance of the arts and humanities,[5][6][7] the value of inter- and trans-disciplinarity,[8][9] educational policy,[10] and digital humanities.[11][12][13] She has commented on the barriers facing women in the university sector[14][15][16] and launched a free Democracy Curriculum in 2020.[17] She is a committed advocate of the public humanities and policy engagement and is a notable public commentator on contemporary issues, including Brexit.[18][19][20]
In 2021, Ohlmeyer delivered the Ford Lectures on 'Ireland, Empire and the Early Modern World' at the University of Oxford.[21] She was the eleventh women to deliver the prestigious lectures since they were founded in 1896. Ohlmeyer was the first person from a university in Ireland to since F.S.L Lyons in 1977. Due to the COVID-19 pandemic, this was the first time the lectures were delivered online. The lectures are now available on the RTÉ website.[22]