Information Security Senior Engineer - Authentication

Who are we? Equinix is the world's digital infrastructure company®, shortening the path to connectivity to enable the innovations that enrich our work, life and planet. A place where tech thinkers and future builders turn bold ideas into breakthrough experiences, we welcome your unique perspective. Help us challenge assumptions, uncover bias, and remove barriers-because progress starts with fresh ideas. You'll find belonging, purpose, and a team that welcomes you-because when you feel valued, you're empowered to do your best work. Job Summary: The Identity Security Engineer, Identity platform (Ping) at Equinix is responsible for designing, implementing, and supporting authentication, authorization, SSO, and multi-factor authentication services. This role works within a multi-disciplinary team of engineers and architects, partnering with business teams to deliver secure, scalable identity solutions. Success in this role is centered on translating business requirements into technical designs and implementing resilient authentication solutions with minimal disruption. The role also extends to modern identity challenges, including non-human identities (NHIs), AI/agent authentication, and automation-driven identity architectures. The Role will: Design, implement, and support SSO, federation, and MFA solutions using Ping suite of products Serve as a Subject Matter Expert (SME) across Ping Identity capabilities and IAM domains Drive adoption of authentication and authorization reference architectures for modern and emerging technologies Develop scalable solutions aligned with Zero Trust principles and enterprise IAM standards Integrate applications (legacy and modern) into SSO, ensuring secure onboarding and adherence to IAM best practices Troubleshoot complex authentication, federation, and identity-related issues across systems Implement and support machine-to-machine authentication (OAuth2 client credentials, API security) Contribute to automation-first identity workflo