This study examines the role of collaborative teamwork and project-based learning (PBL) in engineering management education. Through a longitudinal survey of 52 Masters students enrolled in an Engineering Management Capstone subject, we investigate how PBL techniques impact students' self-confidence and teamwork skills. The 12-week group projects spanned various industries and involved both real and simulated scenarios. Our findings indicate that PBL significantly enhances students' self-confidence in managing projects, with factors like experience, observing peers, team encouragement, and intuition playing key roles. The study also reveals improvements in critical teamwork skills such as collaboration, communication, conflict management, decision-making, leadership, and time management. The research highlights the importance of integrating PBL and collaborative teamwork into engineering management curricula to develop both technical and interpersonal competencies. By providing authentic project experiences, universities can better prepare graduates for the multidisciplinary, team-based nature of modern engineering practice. This approach aligns with industry needs and professional accreditation requirements, fostering graduates equipped with broad knowledge and deep expertise.