Microsoft Security's Core Authentication team in Entra Identity is seeking a Senior Software Engineer to contribute to critical authentication services that power millions of organizations. The role involves working on highly distributed, scalable services maintaining four-nine availability SLA, issuing hundreds of billions of tokens daily. You'll be instrumental in developing innovative security capabilities like conditional access, continuous access evaluation, and token binding. The position offers the opportunity to impact billions of lives while working with cutting-edge technology in authentication and security. The team provides excellent learning and career growth opportunities in a collaborative environment focused on making the world safer through comprehensive security solutions. This role combines technical expertise with meaningful impact, offering competitive compensation and comprehensive benefits in a company committed to innovation and inclusion.