Engineering education is uniquely qualified to make strides towards both a more integrated curriculum and understanding the benefits of an integrated learning experiences, due to the vast amounts of experience with innovative integrative curricular structures. This paper briefly describes an innovative approach to integrate student learning through a four year Synthesis and Design Studio. This provides the context for a phenomenological research study that investigated the nature of students' integrative learning processes. More specifically, the study examined integrative learning through the lens of students' experiences of the focus on deliberate reflection and engagement in the authentic interdisciplinary setting during an interdisciplinary Studio offered in the Fall of 2009. This study consisted of the interpretive analysis of individual reflection reports written by each student after participating in a range of reflective activities over the course of the semester. In addition, the qualitative data included open-ended responses collected from a mid and end-of-semester survey that was conducted externally. The phenomenological analysis of the students' experiences suggests that their development of a professional way of being as a key aspect of integrative learning that emerged gradually from the complex influences of the interdisciplinary educational experience and can be fostered by deliberate, continuous reflection.