This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. At AT&T, we empower leaders to drive change in a fast-evolving, connected world. Your strategic vision will help serve customers and transform lives through innovative solutions and impactful connections. As a Principal Member of Technical Staff (PMTS), you will drive the research, development, and implementation of innovative technologies in support of AT&T's mission to connect people and businesses worldwide. This role demands strong technical expertise across multiple disciplines, the ability to tackle highly complex projects, and leadership in guiding teams and solving critical business challenges with significant impact on company programs and customer service quality.