This study investigates the bearing capacity of strip footings on bilinear soil slopes reinforced with geosynthetics under static loading. The use of geosynthetics as a modern method for soil reinforcement is of particular importance in geotechnical engineering due to its unique characteristics in enhancing tensile strength and reducing deformations. In this research, the effects of parameters such as the number, spacing, and depth of geosynthetic layers, as well as geometric variables like slope angle and height, and mechanical properties of the soil—including internal friction angle and unit weight—are examined with regard to bearing capacity and slope stability. Numerical modeling results under identical conditions indicate that selecting an optimal ratio of geogrid layer depth to footing width leads to an average increase of approximately 2.6% in the upper and lower bounds of bearing capacity—occurring at a ratio of 0.4 for a conventionally reinforced slope and 2.5 for a bilinear reinforced slope. This slight improvement in bearing capacity, along with reduced embankment volume, economic savings, and more efficient space utilization, are considered advantages of this method. Unlike traditional approaches that primarily focus on increasing the number of geosynthetic layers, this study presents a method for determining an effective layout of layers in bilinear slopes. The results show that the simultaneous use of the specific geometry of the slope and the optimal design of layer positioning and depth can enhance footing performance, reduce settlement, and control stress concentration in the loading area. The distinctive feature of this research lies in its analysis of the combined behavior of bilinear slopes and reinforced soil, providing optimal design ratios that not only improve geotechnical performance but also prevent unnecessary increases in construction costs.