Staff Machine Learning Engineer - Message Security Detection

Lead architectural decisions for scalable ML-driven detection across behavioral analysis, natural language processing (NLP), and deep learning components to counter evolving attack tactics. Own end-to-end ML lifecycle—from data exploration and feature engineering to model prototyping, deployment, and real-time monitoring at scale. Design generalizable ML solutions that address critical gaps in multi-layered detection systems, moving beyond incremental fixes. Provide technical leadership and mentoring across multiple ML workstreams, aligning teams on a holistic architectural vision. Build and refine automated retraining and evaluation pipelines to adapt models to unseen attacks and changing threat landscapes. Collaborate with infrastructure and security teams to productionize models and expose core ML capabilities as scalable services for other products.