This study examines the perceptions of students and alumni of Australian engineering schools regarding SR in their employability competencies development process.  It employed quantitative methods using a web-based self-report questionnaire to generate data.  Accordingly, a Self-Responsibility Scale (SRS) consisting of 18 measurement items classified as four underlying factors of SR: (1) Autonomy and Self-Initiation (five items), (2) Sense of Agency (five items), (3) Self-Awareness and Evaluation (five items) and (4) Self-Management (three items).  These factors were further analysed using structural equational modelling to determine the effects of these factors and external circumstances affecting them.  The findings show that the engagements of student and alumni participants highly appreciated the importance of SR and both groups developed a high level of sense of agency, and self-awareness and evaluation.  The results of structural equational modelling showed the appropriateness of considering SR as a multidimensional concept with a significant direct effect of SR on all of the four underlying factors.  In relation to the external circumstances affecting the perceptions of SR, the participants associated their perspective of SR with their recent experiences within the engineering school environments.  This finding has implications for how SR could help learners at university to internalise their external motivations.