Meta is seeking a Performance & Capacity Engineer (Optimization) to join the Capacity Engineering & Analysis team to focus on site-wide performance and capacity optimization at the intersection of all Meta products and services, and all physical infrastructure (Servers, Data Centers, Network). This role will focus on creating and optimizing global and regional capacity plans at various altitudes to balance service, infrastructure, and business constraints by using Operations Research skills to build and improve mathematical optimization models and solvers. This role is uniquely positioned to optimize these capacity plans at the most strategic levels with company level impact. This is one of the most cross functional roles at the company, with the opportunity to work with a variety of engineering and business teams to power the rapid growth of Meta’s products. This engineer will help to ensure optimal operation of our infrastructure resources from both a cost and technology perspective, facilitating tens of billions of user requests, tens of exabytes of data, terabits/s of network flow. Help build one of the largest fleet and internet services in the world! This position is full-time.