Agile development (AD) has become a prominent trend in new product development management, making its way into various industries, including the semiconductor sector. This research inspected the influences of communication mediums on engineers’ performance (EP) in the semiconductor industry focusing on creativity and task performance within an agile development context. Employee agility (EA) was examined as a moderating factor in these relationships. Moreover, this work examines the roles of age (DM) on the relationship between EA and engineer creativity. Data collected from 99 engineers is investigated through Partial Least Squares Structural Equation Modeling (PLS-SEM) with the assistance of SmartPLS software. The findings reveal that communication mediums includes face-to-face communication (FC) and computer-mediated communication (MC) has no direct effect on engineer performance in term of task performance and creativity. Employee agility positively impacts both engineer’s creativity and task performance, and it moderates the effect of computer-mediated communication on creativity. However, age does not alter the connection between employee agility and creativity. These findings contribute to the Componential Theory of Creativity and Media Richness Theory by highlighting the critical role of employee agility in fostering engineer creativity in agile environments. So, the finding suggests managers in the semiconductor industry should focus on enhancing employee agility to optimize creativity and performance, especially when implementing agile methodologies.