L3HHCM20
Senior Specialist, Cyber Intelligence ISSO - TS/SCI with Poly
L3HHCM20 is hiring a Senior Specialist, Cyber Intelligence ISSO - TS/SCI with Poly in Palm Bay, FL, US. Posted September 27, 2026.
Job at a glance
- Company
- L3HHCM20
- Location
- Palm Bay, FL, US
- Posted
- September 27, 2026
About the job
Job Title: Senior Specialist, Cyber Intelligence - ISSO
Job Code: 41901
Job Location: Palm Bay, FL
Job Schedule: 9/80 Reg: Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off
Job Description:
Join the frontline of cyber defense supporting classified government networks as an Information Systems Security Officer (ISSO). In this role, you will help safeguard mission-critical systems by supporting Assessment & Authorization activities, continuous monitoring, system hardening, configuration management, and security compliance under RMF, ICD 503, and NISPOM guidance. You will also investigate security incidents, identify and remediate control gaps, maintain a strong security posture across assigned systems, and deliver security training that strengthens awareness and resilience across the organization. This role is a senior level ISSO who will provide mentorship and assistance to their more junior counterparts.
Essential Functions:
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Maintain Assessment & Authorization (A&A) documentation of assigned systems
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Perform security control assessments and execute Continuous Monitoring Plans
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Work with IT and system administration organizations to develop device and system hardening guides following DISA and NIST guidelines
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Responsible for the tracking and resolution of POA&Ms
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Manage the incident response process for areas of responsibility
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Develop new concepts, standards, and training material which make significant and impactful improvements to processes, systems, solutions, or products
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Lead inventory and asset management discovery and tracking activities
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Work with site leadership to improve the security posture of systems and the facility
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Mentor junior ISSOs in execution of tasks
Qualifications:
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Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
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Active Top Secret/SCI security with CI Polygraph
Preferred Additional Skills:
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Active full scope polygraph
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Willingness to submit to a full scope polygraph investigation (current polygraph preferred)
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DoD 8140.03 certification
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Minimum 8 years of prior relevant experience to include experience with networking equipment; experience interpreting vulnerability scanning results; experience reviewing workstation, server, firewall, & IPS logs; experience with SIEM tools
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Experience as an ISSO managing cybersecurity on classified systems under multiple agencies’ JSIG, NISPOM Ch8, ICD 503, and/or NIST 800-53 implementations
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Experience developing, managing, and providing evidence to close POA&Ms associated with the A&A and project management processes
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Experience with workstation and server operating systems, including but not limited to Microsoft and Linux offerings
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Flexibility to adjust to changing requirements, schedules, and priorities
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Able to socialize ideas, make recommendations, and gain team consensus
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Excellent time management and task prioritization skills
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Exceptional verbal, written, interpersonal and presentation skills, customer relationship building skills, analytical skills and ability to lead/mentor teammates.
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High level of personal motivation and initiative to learn and acquire new skills
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