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Information System Security Officer; TS​/SCI & Expat to Guam

Job in King of Prussia, Montgomery County, Pennsylvania, 19406, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-02-06
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security
Job Description & How to Apply Below
Position: Information System Security Officer (TS/SCI & Expat to Guam Required)

Description

Information System Security Officer (TS/SCI & Expat to Guam Required)

PLEASE NOTE THIS POSITION REQURES THE CANDIDATE TO EXPATRIATE FULL TIME TO GUAM FOR 6-12 MONTHS WITH POSSIBILITY OF EXTENSION

IN ADDITION, THE SELECTED CANDIDATE WILL BE REQUIRED TO ATTEND TRAINING IN KING OF PRUSSIA, PA UPON ONBOARDING.

Who we are

Lockheed Martin is a pioneer in cyber security—partnering, innovating, and building cutting edge solutions.

Our talented employees tackle the world’s toughest engineering challenges every day, leveraging their unique skills and experiences to design and deliver breakthrough technology.

We empower our people to think big, perform with excellence, and create extraordinary products.

If you have the passion and courage to dream boldly, join our culture and help build a better tomorrow.

We provide the resources, inspiration, and focus you need to succeed.

What We’re Doing

At Lockheed Martin Rotary and Mission Systems, we are driven by innovation and integrity. We believe that by applying the highest standards of business ethics and visionary thinking, everything is within our reach and yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education.

As a cyber security professional at Lockheed Martin, you'll be part of a team that's shaping the future of national security and defense. You'll have the opportunity to work on complex and challenging projects that require expertise in security and compliance. You'll collaborate with cross-functional teams to ensure the secure development, production, and deployment of our products and services. Your contributions will help protect sensitive information and critical assets and support the success of our customers and partners.

The

Work

Lockheed Martin’s Rotary & Mission Systems (RMS) division is seeking an experienced Information System Security Officer (ISSO) to protect mission critical OCONUS information systems. This role ensures confidentiality, integrity, and availability in line with DoD, NIST, and Lockheed Martin security policies, while providing day to day oversight across the system lifecycle.

The ISSO is responsible for the oversight of the information system’s security posture. Emphasis is placed on the application and sustainment of the NIST security controls to ensure cyber security requirements are properly administered throughout the system. The ISSO collaborates and consults with the Information System Security Manager (ISSM) regarding the design, development, integration and analysis of classified information systems.

Effective communication and an ability to work collaboratively as well as independently are key attributes needed to be successful in this role. Frequent interaction with internal and external stakeholders is required. Along with the ISSM, the ISSO provides clear direction related to cybersecurity compliance standards. Communication with the government Security Control Assessor (SCA) is required to ensure standards are met. The ISSO is a primary stakeholder and will assist the ISSM with facilitating continuous monitoring efforts that promote RMF compliance.

Why

Join Us

Your Health, Your Wealth, Your Life

Our flexible schedules, competitive pay and comprehensive benefits enable you to live a healthy, fulfilling life at work and home.

Learn more about Lockheed Martin’s competitive and comprehensive benefits package.

We support our employees, so they can support our mission.

Basic Qualifications
  • All candidates must possess a Final Top Secret Clearance w/SCI.
  • All candidates must possess a DoD 8570 IAM Level I certification or higher (e.g., Security + CE, CAP, CASP CE, CISM, CISSP, GSLC, or equivalent).
  • Demonstrated experience applying and documenting policy and system configurations that satisfy NIST 800-53 Security Control requirements across all Control Families.
  • Ability to interpret the requirements necessary for the effective implementation of Security Controls. Technologies include but are not limited to Windows, Linux, Virtualization, Network Infrastructure, etc.
  • Ability to develop and update relevant RMF artifacts such as the System Security Plan (SSP), Plan of Actions and Milestones…
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