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Information Systems Security Officer, Classified Cybersecurity

Lockheed Martin
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King of Prussia, PA, USA
Sep 20, 2026

Standard Job Description

Top Secret security clearance with ability to obtain SCI Eligibility and Polygraph.

This position will perform duties as a Classified Cybersecurity Information Systems Security Officer (ISSO) for systems located at the LM Space facility in Valley Forge PA.

The work that Cybersecurity ISSO’s do can be summarized in this way:
- You will have a direct impact to national security, ultimately contributing to protecting your loved ones - this is dynamic, gratifying and impactful work!
- You will have the opportunity to engage in all aspects of the cyber discipline
- You can enjoy a work-life balance that allows for flex hours and a family-first culture.

Key Responsibilities of this role includes:
- Oversee day-to-day information system security operations including hardware and software implementations.
- Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF).
- Upkeep, monitor, analyze, and respond to network and security events.
- Document compliance actions within the approved automated compliance tracking system or develop a plan of actions and milestones (POA&M) with the Information Systems Security Manager (ISSM) to address non-compliance in the allotted time frame.
- Ensure systems are operated, maintained, and disposed of in accordance with internal security policies and practices outlined in the security plan.
- Balance competing priorities in support of customer requirements and program success.
- Manage closure of vulnerabilities and audit user activities on the systems.

Basic Qualifications

- Top Secret security clearance with ability to obtain SCI Eligibility and Polygraph.
- DoD 8570 IAM Level III certification.
- Hands-on experience with industry standard Information Assurance tools.
- Technical familiarity with Windows or UNIX-based operating systems, and their security requirements.

Desired Skills

- Experience working with ICD requirements, RMF implementation.
- Experience with industry standard Information Assurance tools such as STIG Viewer, Nessus, and Splunk.
- Experience performing; security system hardening, analysis, vulnerability management, DISA STIGs.
- Experience applying ICD 503 using the JSIG or NIST 800-53 on diverse computing platforms.
- Prior Information System Security Engineer (ISSE) or System Administration experience.
- Current certifications in Security+, CCNA, CISSP, or others related to Networking and Cybersecurity.
- Prior experience with Windows or Linux Operating Systems.

Pay Information

Full-Time Salary Range: $118000.00 - $219100.00

At  Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow-both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer.  

Benefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.

  • Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
  • For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.

Job ID

996476188248

Security Clearance

Top Secret
About Lockheed Martin

The F-35, PAC-3, and the GOES weather satellite...What do all of these technologies have in common? Talented people, our employees are the core of our business here at Lockheed Martin. As the leading global security, aerospace and information technology company-and the largest provider of IT services, systems integration & training to the U.S. government-we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges.

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