Microbial induced calcite precipitation (MICP) is a cost-effective and environmentally friendly technique that enhances the resistance of soil to shear forces. The study aims to experimentally evaluate the efficiency of employing MICP along with the addition of fibres to enhance the shear strength parameters and permeability of poorly-graded soil. In this process, a slurry was produced by mixing a strain of Bacillus group, B. subtilis, with a cementation solution consisting of urea and calcium chloride. This mixture was used to activate and accelerate the formation of calcite through the reaction between urea and calcium chloride. The experimental study was conducted in three stages: (a) the introduction of a slurry; (b) the introduction of both slurry and vetiver fibre; and (c) the introduction of both slurry and bamboo fibre into the soil. The findings demonstrated that the application of MICP along with the incorporation of fibres led to a significant enhancement in the shear strength of the soil. The treated specimens exhibit more potential for an increase in strength compared to the untreated specimens. Furthermore, the inclusion of slurry along with the fibres resulted in a decrease in the permeability of the soil. Both vetiver and bamboo fibres, when combined with slurry, can be considered suitable for soil improvement.