**Overview**

As a Principal Identity Architect, you will lead and drive Epsilon's identity modernization program—moving the organization from legacy SAML and long-lived credential patterns toward a modern, OAuth 2.1 / OpenID Connect (OIDC)-first approach. You will design and implement secure token flows, machine identity patterns, and integration standards that work across multi-cloud and multi-platform environments, while guiding others to deliver against the same bar.

In this role, you partner with Security, Cloud Engineering, Platform, Application, and Data teams to migrate service accounts and API keys toward scoped, ephemeral machine identities; apply enterprise standards for OAuth applications and token usage; and support emerging requirements in non-human and AI-assisted authentication. You bring practical rigor to authorization server integrations, token scopes, claims usage, and lateral-movement risk reduction—helping teams adopt identity patterns that are se...