S I Systems is seeking a Senior Security Operations and Detection Engineering Specialist to design and operationalize Microsoft Sentinel, Defender XDR, Security Copilot, UEBA, and SOAR automation capabilities for a large public sector program. The role emphasizes modernization of security operations into an intelligence-driven, automated defense framework across multiple teams. Remote position in the Eastern time zone; extensive collaboration with SOC, MSSP, identity, endpoint, cloud, and