This qualitative study explored the lived experiences of female engineering graduates from Pamantasan ng Cabuyao, focusing on the presence and impact of the impostor phenomenon (IP). Eight graduates presented varying levels of IP as measured by the Clance Impostor Phenomenon Scale participated in semi-structured interviews. Interpretative Phenomenological Analysis revealed several key themes: self-doubt regarding skills and qualifications, workplace challenges including perceived skill inadequacy and overwhelming tasks, fear of failure coupled with a drive for self-development, the impact of self-expectations on well-being and productivity, navigating the pressure of challenging roles, challenges with self-perception and opportunity-seeking, coping mechanisms including perfectionism and seeking external validation, managing self-doubt through self-awareness and support systems, and the importance of support systems in mitigating IP. Findings indicated that early career stages are marked by significant uncertainties and self-doubt, often masked by overcompensation and a reluctance to acknowledge achievements. Participants demonstrated a tendency to internalize negative feedback while also leveraging it for growth. Strong support systems, both personal and professional, emerged as crucial in combatting IP and fostering self-efficacy. The study highlights the need for further research, particularly within the Filipino context, to explore potential culture-specific manifestations of the impostor phenomenon.