Previous literature suggests that engineers are known for lacking communication skill and training, despite an illustrated need for it established by accredited engineering organizations. Limited research has been done to effectively include communication competencies in engineering education. The current study sought to identify what communication competencies research engineers need to function at a research and development center, and to develop recommendations for training for both university and workplace setting. This qualitative case study included semi-structured, in-depth interviews with 10 employees of the U.S. Army Corps of Engineer’s premier research center: Engineer Research Development Center (ERDC). The sample consisted of six research engineers and four other allied professionals. The analysis indicated that engineers valued the three main competencies of collaboration, audience adaptation, and interpersonal understanding. These are built upon foundational skills, including oral and visual communication skills, written skills, and active listening skills. Results also showed that engineers preferred an integrated approach to engineer communication training and identified university courses and workplace trainings as two different sources of communication learning. Findings were consistent with two theories of communication learning: communication across the curriculum (CXC) and communication in the disciplines (CID). Practical applications are offered for educators in communication and engineering fields, as well as career development professionals.