Walatka serves as the Assistant Chair for Graduate Studies in the Department of Theology and specializes in contemporary Catholic systematic theology. His research focuses particularly on the thought of Hans Urs von Balthasar and Latin American liberation theology. He also works in the field of pedagogy and pedagogical formation, both in his role as Assistant Chair for Graduate Studies and in his research. His two ongoing book projects explore 1) the theme of mercy in liberation theology and 2) the theological witness of Archbishop Oscar Romero.
His most recent courses taught include: Foundations of Theology; The Church and the Poor; Introduction to Vatican II; Christian Traditions II; Ecclesiology; Eschatology; Teaching Theology