Hiring: Information System Security Officer - Classified Systems Company: Leidos Location: Huntsville, AL Job Posted Time: 2026-09-11 10:19:10 Employment Type: On-site Target Skills & Keywords : Linux, SIEM, Splunk About the job Experience: •Bachelor’s degree with 2+ years of relevant cybersecurity, information technology, information assurance, or information systems security experience. Additional relevant experience may be considered in lieu of a degree. •2+ years of relevant cybersecurity, information technology, information assurance, or information systems security experience. Additional relevant experience may be considered in lieu of a degree. Required Skills: •Leidos Dynetics, reporting through the Digital Sector, is seeking an Information System Security Officer (ISSO) •To support classified information systems and cybersecurity operations in Huntsville, Alabama. •This position provides an opportunity to develop hands-on experience across the Risk Management Framework (RMF) lifecycle while supporting technical security assessments, system hardening, vulnerability management, configuration management, security documentation, and DCSA assessment activities. •: Work will be performed on-site in the Leidos Dynetics Huntsville office. This role allows for 20% local telework. •You must currently hold an active Secret clearance to be considered and must be eligible to obtain Top Secret post hire. •ISSO’s primary responsibilities include supporting the day-to-day cybersecurity oversight and compliance of classified information systems and assisting with maintenance of system authorizations. •Perform security monitoring and compliance reviews of classified information systems and report identified deficiencies, risks, and noncompliance to the ISSM or designated cybersecurity lead. •Actively facilitate and support RMF lifecycle by developing, reviewing, and maintaining authorization artifacts and objective evidence within the system Body of Evidence (BoE). Qualifications: •Must meet, or be capable of meeting, applicable DoD 8140/DoD Cyber Workforce Framework (DCWF) qualification requirements for the assigned work role through approved certification, education, training, or experience. •Operational familiarity with the RMF and cybersecurity control implementation, assessment, or compliance activities. •Demonstrate direct experience and/or knowledge in one or more of the following areas: cybersecurity, information systems security, system administration, system hardening, vulnerability management, security configuration management, or compliance auditing. •Solid functional working knowledge of Windows and/or Linux operating systems and associated security concepts and configurations. •Operational familiarity with cybersecurity requirements and standards such as NIST SP 800-53 Rev 5, DISA STIGs, DCSA requirements, the DAAG, NISPOM, or comparable government cybersecurity requirements. •Demonstrated capacity to review technical security findings, document deficiencies, and assist with development and validation of corrective actions. •Demonstrated capacity to develop and maintain detailed cybersecurity documentation and objective evidence supporting information system compliance. •Strong organizational, analytical, written, and verbal communication skills with the ability to manage assigned cybersecurity activities and priorities. •Demonstrated capacity to work collaboratively with Information Technology, system administrators, engineers, program personnel, physical security, and other cybersecurity professionals •Cybersecurity, information assurance, information systems security, system administration, system hardening, or Information Technology. Compensation: •$69,550 - $125,725 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!