Senior Specialist, Cyber Intelligence ISSO - TS/SCI with Poly

Harris Geospatial Solutions; Palm Bay (FL); On-site; USD 110,000 - 160,000; Full time

Job summary

L3Harris Technologies is seeking a Senior Specialist, Cyber Intelligence to support classified government networks as an Information Systems Security Officer (ISSO). This role emphasizes A&A, continuous monitoring, system hardening, and security training under RMF, ICD 503, and NISPOM guidance.

The ideal candidate will mentor junior ISSOs, manage POA&Ms, and lead efforts to improve security posture across assigned systems while collaborating with IT and leadership.

Qualifications

• Bachelor's or Graduate degree in cybersecurity or a related discipline from an accredited college.

Responsibilities

• Maintain Assessment & Authorization (A&A) documentation of assigned systems.
• Perform security control assessments and execute Continuous Monitoring Plans.
• Develop device and system hardening guides following DISA and NIST guidelines.
• Manage POA&Ms and incident response processes within assigned scope.
• Mentor junior ISSOs and lead security posture improvements across systems.

Skills

Security assessments

A&A processes

DISA/NIST guidance

POA&M management

Incident response

Mentoring junior ISSOs

Education

Bachelor's or MS in cybersecurity

Tools

SIEM tools

Job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Senior Specialist, Cyber Intelligence

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:

• Maintain Assessment & Authorization (A&A) documentation of assigned systems
• Perform security control assessments and execute Continuous Monitoring Plans
• Work with IT and system administration organizations to develop device and system hardening guides following DISA and NIST guidelines
• Responsible for the tracking and resolution of POA&Ms
• Manage the incident response process for areas of responsibility
• Develop new concepts, standards, and training material which make significant and impactful improvements to processes, systems, solutions, or products
• Lead inventory and asset management discovery and tracking activities
• Work with site leadership to improve the security posture of systems and the facility
• Mentor junior ISSOs in execution of tasks

Qualifications:

• Bachelor's or Graduate degree in cybersecurity or a related discipline from an accredited college
• Active Top Secret/SCI security with Polygraph

Preferred Additional Skills:

• Active full scope polygraph
• Willingness to submit to a full scope polygraph investigation (current polygraph preferred)
• DoD 8140.03 certification
• 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
• Experience as an ISSO managing cybersecurity on classified systems under multiple agencies’ JSIG, NISPOM Ch8, ICD 503, and/or NIST 800-53 implementations
• Experience developing, managing, and providing evidence to close POA&Ms associated with the A&A and project management processes
• Experience with workstation and server operating systems, including but not limited to Microsoft and Linux offerings
• Flexibility to adjust to changing requirements, schedules, and priorities
• Able to socialize ideas, make recommendations, and gain team consensus
• Excellent time management and task prioritization skills
• Exceptional verbal, written, interpersonal and presentation skills, customer relationship building skills, analytical skills and ability to lead/mentor teammates.
• High level of personal motivation and initiative to learn and acquire new skills

#LI-EK1

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

L3Harris Technologies is an E-Verify Employer.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.