Build and operate shared authentication and authorization platform capabilities across cloud, legacy, and lifecycle environments. Develop platform services, APIs, infrastructure code, automation, deployment pipelines, and self-service workflows. Operate Kubernetes-based systems in production with observability, testing, safe rollouts, recovery, and reliability practices. Apply OAuth 2.0, OpenID Connect, token management, permission models, tenant isolation, federation, and fine-grained authorization. Provide technical leadership through architecture, code reviews, standards, and engineering support.