She is the Professor of Catholic Studies at the University of Roehampton in London and Director of the Digby Stuart Research Centre for Religion, Society and Human Flourishing.
Beattie's academic research and publications include work on Catholic theology and psychoanalytic theory (Theology After Postmodernity: Divining the Void; theologies and theories of gender and sexuality (New Catholic Feminism: Theology and Theory); the cult of the Virgin Mary (God's Mother, Eve's Advocate); theology and art; atheism and religion (The New Atheists), and religion and women's rights (see Writings, below).
In addition to her academic work, Beattie has been a public speaker on issues relating to the role of religion in contemporary society and contributes to radio and television.
She has written for the Catholic weekly journal, The Tablet, and contributed to The Guardian.
She has engaged in a wide range of educational and awareness-raising activities and projects among religious groups, including inter-religious dialogue and issues concerning social justice and non-violence.
Ordinary Catholics have criticised her for arguing in favour of same-sex marriage and women's ordination, for challenging the Catholic Church's teachings on contraception, and for appealing for a more-nuanced ethical approach to the question of early abortion.