As a senior lecturer and Chartered Psychologist, Dr O'Neill's main focus lie within the areas of teaching and research. One of her other valued roles is as the Disability Link Tutor for the School of Psychology. An important part of the role is to develop good relationships with members of staff from the Disability office and Student Services, this is necessary to ensure that the best provision is being made for individual psychology students who might require additional support to achieve parity and progression with other students throughout their university stay.

A more recent role for Dr O'Neill involves the setting up and being co-lead in a Neurodiversity Special Interest Group. This is a collaboration between University of Chester and the Centre for Autism, Neuro-Developmental Disorders, and Intellectual Disability (CANDDID). She aims to bring together those working in the field of neurodevelopmental conditions, intellectual disability, education, medical law, ethics, gender studies, training, and research. This will allow Dr O'Neill and other members of University of Chester academic staff and students to foster links between regional academics, including neurodivergent academics, NHS clinical staff, local authorities, lived experience researchers and students interested in neurodiversity. The aim of the group is to set up a collaborative platform for developing new ideas, co-producing new projects, developing a network, and creating the opportunity for adding to the academic literature. The group will also consider opportunities for joint funding applications. Dr O'Neill envisages that the group will act as an internal peer reviewer for protocols, funding applications, and developing research projects.