This mid-level Information System Security Engineer role supports a prestigious national customer within Arcfield's expanding cybersecurity team. The position requires a TS/SCI clearance with polygraph and focuses on maintaining security programs aligned with NIST and RMF standards. Key responsibilities include assessing and mitigating risks in IT and SCADA systems, designing secure architectures, and preparing documentation for authorization to operate. The role offers the opportunity to work on mission-critical terrestrial and space systems while collaborating with government stakeholders. It appeals to professionals seeking to apply advanced security engineering principles in a dynamic environment that values technical expertise and continuous improvement in system safety.