ISSE - Classified Systems Security Engineer
Castelion Corporation
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Job summary
Castelion Corporation is seeking an Information System Security Engineer (ISSE) in Torrance, CA to translate security requirements into tested controls for classified information systems. You will harden Windows and Linux, configure SIEM, and support RMF/ATO activities with ISSMs, ISSOs, and IT engineers in a fast-paced defense environment.
The role emphasizes hand-on vulnerability assessment, STIG application, and secure software review, with on-site duties and occasional travel.
Job description
Castelion Corporation is seeking an Information System Security Engineer (ISSE) in Torrance, CA to translate security requirements into tested controls for classified information systems. You will harden Windows and Linux, configure SIEM, and support RMF/ATO activities with ISSMs, ISSOs, and IT engineers in a fast-paced defense environment.
The role emphasizes hand-on vulnerability assessment, STIG application, and secure software review, with on-site duties and occasional travel.
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