AuthenticationEngineer

**Summary** We are the next-generation digital identity wallet that simplifies how individuals securely prove their identity online. Consumers can verify their identity with us once and seamlessly log in across websites without needing to create a new login and re-verify. Over 140 million users experience streamlined login and identity verification with us at 20 federal agencies and 44 state agencies **General Information** **Onsite Location: Mountain View, CA OR McLean, VA (Onsite 5 days per week)** We are seeking a Software Engineer to join the Wallet - Authentication team, where we build the core sign-in, registration, and account management experiences that over 140 million members rely on to access the our identity wallet. As a Software Engineer III, you will work end-to-end across our authentication stack — building features that balance security, usability, and trust at scale. Your work will sit at the intersection of identity, security, and consumer experience, directly shaping how millions of people prove and access who they are online. **Key Responsibilities** * Build & Ship Authentication Features: Build, maintain, and improve the ID.me Wallet authentication experience — sign-in, registration, MFA, account recovery, password reset, and MyWallet. Independently drive small-to-medium features end-to-end from design through deployment, collaborating closely with Product, Design, and Security to translate requirements into well-tested, production-ready code. * Security, Risk & Reliability: Own and evolve the team's real-time risk engine and its integration across authentication flows — detecting and mitigating credential attacks, account takeover, and abuse while preserving a low-friction experience for legitimate members. * Apply security best practices as a first-class concern in every feature you ship, and help raise the bar for authentication reliability, observability, and incident response across the team's services. * Code Quality & Engineering Craft: W