Job Title: Sr. OT Network Engineer Job Location: Manassas, VA Eligibility/Clearance: Must be authorized to work in the US JOB DESCRIPTION Architecture & Design - Design and implement a segmented OT network architecture transitioning from flat Layer 2 networks to SD-WAN-enabled, zone-based architectures. - Define network segmentation strategy (ISA/IEC 62443 zones and conduits model) to isolate critical OT assets and control east-west traffic. - Engineer ring and/or resilient topologies acros