We are seeking a hands‑on Principal Data Scientist to lead applied machine learning and research initiatives for security‑ and privacy‑critical AI systems. This role is ideal for a senior practitioner who combines deep theoretical understanding with strong engineering execution, and who has experience building ML systems within strict compliance, privacy, and regulatory boundaries.

The role spans research‑driven exploration and production delivery. You will allocate and manage your technical bandwidth across exploratory research, model development, and strategic mentorship—ensuring that advanced techniques translate into robust, deployable, and compliant solutions. You will work extensively with NLP and Transformer‑based architectures, alongside classical ML methods, to solve real‑world security problems at scale.

This is not a purely academic or managerial role. You will design experiments, write code, review models, evaluate risks, and ship systems, while als...