Supply chain managers are looking for more cost-effective ways to satisfy demand. However, unexpected events put at risk their profit margins and even more if suppliers are immersed in a performance-based contract (PBC). Under a PBC, the supplier's profit is linked to outcomes and performance instead of solely providing products. To improve a supplier's performance, increasing resilience has shown benefits to mitigate the effects of disruptive events. Thus, this research focuses on understanding the vulnerability of two highly interrelated systems, a primary system (PS) and its corresponding support infrastructure (SI) necessary to sustain the proper operation of the PS, such as those found in the aerospace, defense, utilities, and construction industries. The model demonstrates not only the post-disruption resilience at each support infrastructure node along with the investment necessary to restore the network but also an adequate design for the PS using the redundancy allocation problem. The objective is to maximize the supplier's profit under contractual constraints when facing disruptive events.