Senior Endpoint Security Engineer - Kernel & OS

Mimecast North America, Inc. is seeking a Senior Software Engineer to advance the Endpoint Sensor team. You will design, implement, and own cross‑platform endpoint capabilities, working at the OS boundary with kernel‑mode components and extensions to defend data across Windows, macOS, and Linux. You’ll contribute to real-time enforcement while maintaining performance and reliability in large-scale deployments, collaborating with product and cloud teams to secure AI-driven workflows and