Meta is seeking a Performance & Capacity Engineer to join the Capacity Engineering & Analysis team, focusing on site-wide performance and capacity optimization across all Meta products and services, as well as physical infrastructure. This role involves creating and optimizing global and regional capacity plans to balance service, infrastructure, financial, and business constraints, managing significant investments annually. The engineer will utilize capacity/performance engineering and operations research/data science skills to optimize capacity plans with company-wide impact, collaborating with various engineering and business teams to support Meta's rapid growth.