Principal Machine Learning Engineer, Account Authentication

As a Principal ML Engineer on the Account Authentication and Security team, you will lead the design, development, and deployment of ML solutions for authentication and account security.
Drive detection of account takeovers and anomalies across large-scale signals while balancing security and onboarding experience.
Oversee end-to-end ML lifecycles—from scoping and data collection to modeling, evaluation, productionization, and monitoring.
Define standards for ML quality, reliability, and operational excellence, and mentor engineers across the organization.
Collaborate with product managers, data scientists, engineers, and UX teams to translate business goals into robust technical solutions.
Influence long-term ML strategy for account security and stay ahead of evolving threats at scale.