Integrating unique properties of molybdenum disulfide(MoS₂) into the polyaniline (PANI) matrix unlocks new functionalities and has widespread applications in energy storage devices[1], photocatalyst devices[2], optoelectronic devices[3], sensors and detectors[4]. Nanocomposite thin films are typically prepared using spin/dip coating and drop casting from a solution, which the solubility of the composite constituent in the solution may constrain. In this work, we report the fabrication of PANI-MoS2 nanocomposite thin films using the thermal evaporation technique with precise control over thickness and composition. A series of films are fabricated, varying the MoS2 loading concentration, as evidenced by the presence of characteristic Raman peaks. The thickness of the films is investigated using a surface profiler, finding it to be in the range of 70-120 nm. The contact angle measurement shows that as the MoS2 loading increases, the film becomes more hydrophobic, indicating enhanced water repellency. Ultraviolet-visible (UV-vis) spectroscopy has been utilized for bandgap calculation to observe the effect of MoS2 loading in PANI, which reveals interesting bandgap modulation as the bandgap of the nanocomposite decreases with increasing loading concentration. UV-vis transmittance measurements show that the films are highly transparent in the visible range, accompanied by a red shift in the transmittance peak, indicating possible electronic structure modification. Furthermore, a comprehensive analysis of optical characteristics was carried out using steady-state and time-resolved photoluminescence (PL). This study highlights the significant potential of PANI-MoS2 nanocomposite films as a versatile and effective material suitable for various applications, supporting the development of thin-film nanocomposite technologies.