End-to-end ownership of a feature area related to authentication/authorization, responsible for all aspects of designing, developing and deploying the solution. This includes driving its technical direction, leading design and code reviews, and setting engineering standards for the team. Lead complex initiatives across Core Authentication and dependent partner teams, working closely with cross-functional discipline contributors (product managers, architects, security engineers, support engineers). Apply threat modeling and secure-by-design practices, and ensure solutions meet compliance requirements across commercial, sovereign and government cloud environments. Drive the evolution of the authentication stack, including modern protocols and next-generation cryptography. Participate in the on-call rotation, lead resolution and root-cause analysis of complex production issues, and turn learnings into lasting reliability improvements. Mentor engineers across levels and help raise the team's technical bar. Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python These requirements include but are not limited to the following specialized security screenings: Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. 2+ years technical leadership experience, including driving a complex multi-year infrastructure project. Deep knowledge of distributed systems and cloud technologies, with experience building and operating large-scale services, backend or full-stack, including on-call Knowledge of modern authentication and authorization protocols (e.g., OAuth 2.0, OpenID Connect, Kerberos, SAML). 3+ years' experience in one or more scripting languages (e.g., PowerShell, Bash, Python, or a similar language). Solid communication skills and experience working across disciplines and functions.