Exploring Engineers’ Experiences of Interdisciplinary Collaboration in Multidisciplinary Engineering Projects: A Qualitative Study
This study aimed to explore engineers’ lived experiences of interdisciplinary collaboration in multidisciplinary engineering projects and to identify the relational, communicative, organizational, and learning processes that shape effective cross-disciplinary work. This qualitative study was conducted using a conventional thematic analysis approach. Participants were 24 engineers working in multidisciplinary engineering projects in Tehran, Iran. They were selected through purposive sampling to ensure variation in engineering discipline, professional experience, organizational role, and project type. Data were collected exclusively through semi-structured interviews, each lasting approximately 45–75 minutes. Interviews focused on participants’ experiences of working with engineers and professionals from other disciplines, perceived facilitators and barriers to collaboration, communication practices, conflict management, leadership support, and learning outcomes. Data collection continued until theoretical saturation was achieved. All interviews were audio-recorded with participants’ consent, transcribed verbatim, and analyzed using NVivo software. The analysis followed iterative coding, category development, constant comparison, memo writing, and theme refinement. Five main categories emerged from the analysis: negotiating disciplinary languages and mental models; coordination through boundary objects and integrative routines; relational trust and psychological safety; leadership and project governance as collaboration scaffolds; and interdisciplinary learning and professional identity development. Participants described interdisciplinary collaboration as both necessary and challenging. While disciplinary diversity improved problem-solving and project innovation, it also created misunderstandings, delays, jargon-related confusion, and conflicts over priorities. Effective collaboration depended on shared project goals, early clarification of roles, structured coordination meetings, use of common design documents, respectful communication, and leaders who actively mediated disciplinary boundaries. The findings suggest that interdisciplinary collaboration in engineering projects is not merely a technical process but a socially negotiated practice requiring communication competence, trust, boundary-crossing capacity, integrative leadership, and reflective learning. Multidisciplinary projects benefit when organizations create formal and informal structures that enable engineers to translate disciplinary knowledge, manage conflict constructively, and develop shared ownership of complex project outcomes.