A global consumer device company islooking for an experiencedMachine Learning Engineerto lead the development of prompt injection and prompt safety models that protect downstream agentic AI systems across phone, cloud, and XR/AR. You will design, train, and deploy classifier and guardrail models (both cloud-based and hybrid on-device) that screen agent inputs and outputs for injection attacks, unsafe content, and policy violations. A core part of the role is post-training these models with RLHF,