Identity Security Engineer - CIAM/Auth0
First seen by Alion on Oct 9, 2026.
Role : IAM / Identity Security
Key Responsibilities :
- Implement and configure Auth0 Customer Identity modules (Universal Login, connections, MFA, Actions/extensibility, attack protection, logging)
- Design and support OAuth 2.0 / OpenID Connect flows for customer-facing applications
- Debug customer identity issues in real time, with intimate knowledge of JSON Web Tokens (JWT) - claims, signatures, expiry, audience/issuer validation, access/refresh token behavior
- Apply and support FAPI 2.0 (Financial-grade API) aligned authentication and authorization patterns
- Integrate Auth0 with APIs, applications, and identity federation/SSO where required
- Contribute to identity runbooks, playbooks, and process documentation
- Support audit and compliance evidence gathering related to customer authentication and access
- Escalate and coordinate on critical customer-identity events with senior leadership
Required Experience :
- 6+ years in IAM / identity security, with 3 - 5+ years of hands-on Auth0 (Customer Identity) implementation and support experience
- Proven experience debugging production customer auth/token issues under time pressure
- BFSI client-facing implementation experience preferred
Core Technical Expertise :
- Auth0 (Customer Identity / CIAM)
- JSON Web Tokens (JWT), OAuth 2.0, OpenID Connect
- FAPI 2.0 standard familiarity
- MFA, PKCE, token/session lifecycle, secure client patterns
- Identity federation and SSO as applied to CIAM
- API security fundamentals related to customer authentication
Preferred Certifications :
- Auth0 / Okta-related identity certifications (as applicable); cloud identity adjacency (e.g., Microsoft Entra ID / Azure AD B2C) a plus
Skills
iAM, IT Security Strategy, CIAM, Auth0, Security Configuration, SSO Support, Security Monitoring Tools, Identity Management