This article focuses on enhancing the research communication skills of postgraduate engineering students by incorporating collaborative practices into the English for Academic Purposes (EAP) study course. The research was conducted at Latvia University of Life Sciences and Technologies (LBTU) during two academic years, 2023/2024 and 2024/2025. A total of 87 students from various engineering programs participated in the experiment. The results of the needs analysis conducted at the beginning of the EAP course revealed the main challenges students faced in research communication in the English language. To meet the demands of postgraduate engineering students, various collaborative practices were integrated into the study course based on the theory of social constructivism. These included peer review workshops, group research proposals, oral presentations, and digital poster creation supported by AI tools. The impact of these activities on research communication skills was assessed through both student self-assessment surveys and instructors’ evaluations of student performance. Results show that collaborative practices significantly enhance students’ written, oral, and digital research communication. According to the findings, incorporating collaborative practices into EAP instruction can help postgraduate engineering students become more academically and professionally prepared for international research.