Introduction: We introduce our initiative to integrate professional preparedness electronic portfolios (ePortfolios) within an undergraduate mechanical engineering program. EPortfolios provide students with a visual way to illustrate examples of their skills and can help set them apart in employment applications and interviews. About the case: To better prepare our students to communicate their preparedness to potential employers, we integrated ePortfolios within existing undergraduate design courses. We also designed a new portfolio studio course. Situating the case: This teaching case is situated through previous literature on professional preparedness ePortfolios. We limit our scope to studies within engineering and technical communication disciplines. Methods/approach: We integrated ePortfolio instruction and an accompanying ePortfolio artifact assignment requirement within three design classes in our undergraduate Mechanical Engineering curriculum. We assessed assignments and surveyed participants to understand students’ takeaways and approaches on the ePortfolio classroom instruction and assignment. Results/discussion: Results from 147 assignment submissions across three classes indicated that although most assignment submissions demonstrated effective communication of engineering skills, a considerable number of submissions lacked in clarity, professionalism, or relevance. Extended instructional time on ePortfolios could benefit students. More focused instruction could be integrated into existing courses or in a stand-alone portfolio studio course. Our design of this future course was informed by our assessment of student artifacts as well as what we learned about students’ perceptions of ePortfolios from the 130 survey responses. Conclusions: We share lessons learned for teachers from multiple disciplines interested in integrating professional preparedness ePortfolios within their curricula.