Specialist, Information System Security (ISSO)

Job Title: Specialist Cyber Intelligence (ISSO)

Job Code: 32184

Job Location: Colorado Springs CO

Job Schedule: 9/80 Off Every Other Friday

Job Description:

L3Harris is seeking an Information System Security Officer (ISSO) to support the Space Superiority & Imaging divisions customers and programs. The ISSO will perform information system security activities under the guidance and oversight of the Information System Security Manager (ISSM) on assigned information systems. The ISSO will be knowledgeable in information technology and information assurance standards and regulations. Responsibilities include but are not limited to performing security control assessments and continuous monitoring conducting configuration and vulnerability scanning and remediation authoring and maintaining documentation and artifacts (body of evidence) in support of the Assessment and Authorization (A&A) of information systems following the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) remediating security control deficiencies assessing and approving change requests for assigned information systems performing user training and user account management oversight and investigating and responding to security incidents and violations.

Essential Functions:

• Perform Continuous Monitoring of assigned information systems to include user activity monitoring (auditing) using SIEM tools or the native audit reduction capability of the operating system
• Conduct security control assessments
• Initiate review and remediate vulnerability and compliance scans using industry approved scanning tools (Nessus ACAS)
• Review and assess the configuration settings of assigned information systems against the DISA STIG configuration standards
• Developing and updating documentation in support of obtaining or maintaining an Authority to Operate (ATO) for assigned information systems
• Attend Change Control Boards (CCB) to review and approved information system change requests
• Conduct and monitor security awareness training for information system users
• Respond to and investigate security incidents and violations

Qualifications:

• Active Secret security clearance
• Bachelors Degree and minimum 4 years of prior relevant experience or Graduate Degree and a minimum of 2 years of prior related lieu of a degree minimum of 8 years of prior related experience
  
  

Preferred Additional Skills:

• DoD 8570 IAM III certification
• Experience as an ISSO/ISSM supporting classified systems under the JSIG ICD 503 and/or 32 CFR Part 117 Section 18
• Experience as an ISSO/ISSM supporting NIPRNet and/or SIPRNet systems
• Experience hardening information systems and/or performing configuration/vulnerability assessments against the DISA STIG standards
• Experience auditing information system and user activity using SIEM tools like Splunk and/or Log Insight
• Experience utilizing command line interfaces (CLI) and Linux/Unix commands to operate/support systems
• Experience scanning information systems using Nessus and/or ACAS
• Experience with A&A databases like eMASS and/or Xacta
• Experience performing RMF A&A activities and system accreditation
• Experience developing policies and procedures to implement security controls and customer requirements.
• Experience developing Plans of Action & Milestones (POA&M) to document and mitigate security control deficiencies
  
  

In compliance with pay transparency requirements the salary range for this role in Colorado is $79000 - $146500 and for the greater Denver area is $90500 - $168500. This is not a guarantee of compensation or salary as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits including health and disability insurance 401(k) match flexible spending accounts EAP education assistance parental leave paid time off and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire schedule type and the applicability of collective bargaining agreements.

The closing date for this job posting is March 16th 2026.

#LI-FS1