Mid-Career Information System Security Officer (ISSO)

Lockheed Martin Corporation; Littleton (CO); On-site; USD 96,000 - 178,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Flexible work arrangements (e.g., 4x10

401(k) match

Paid time off

Job summary

Lockheed Martin RMS in Littleton, CO is seeking an Information System Security Officer to join the Classified Cyber Security (CCS) team. You will ensure compliance with government guidelines and manage security controls on classified information systems supporting DoD programs.

You will coordinate with government partners to maintain Authorization to Operate (ATO), oversee RMF implementation, and develop security procedures and system security plans for networked and standalone systems.

Qualifications

• Active Secret clearance and ability to obtain TS/SCI clearance.

Responsibilities

• Coordinate and manage interactions with government partners to facilitate and maintain 100% active status of all Authorizations to Operate (ATO).
• Oversee technical administration of information systems in accordance with RMF, including continuous monitoring, POA&Ms, and change management.
• Develop and implement government-approved information security procedures and system security plans for operation of networked and standalone classified systems.
• Communicate, implement, and manage a formal cybersecurity program.
• Oversee and conduct risk assessments on cybersecurity architecture and perform investigations in collaboration with outside agencies as required.

Skills

Active Secret clearance

TS/SCI eligibility

DoD8570/8140 Level II cert

RMF/ATO leadership

Root-cause analysis

Risk and vulnerability assessments

Cybersecurity program management

Agile/DevSecOps awareness

AI prompting (specialized)

Security optimization

Tools

Tenable

Splunk

Trellix

eMASS

XACTA

JIRA

Confluence

Docker

Ansible

Git

Job description

Standard Job Description

Lockheed Martin is a cybersecurity pioneer, partner, innovator and builder. Our amazing employees are on a mission to make a difference in the world and every single day we use our unique skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems.

Standard Job Description

Lockheed Martin is a cybersecurity pioneer, partner, innovator and builder. Our amazing employees are on a mission to make a difference in the world and every single day we use our unique skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems. Do you want to be part of a culture that inspires employees to think big, perform with excellence and build incredible products? We provide the resources, inspiration and focus – if you have the passion and courage to dream big, then we want to build a better tomorrow with you. At Lockheed Martin Rotary and Mission Systems (RMS), 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. Come and experience your future! We are looking for an Information System Security Officer to join the RMS Classified Cyber Security (CCS) team. This exciting opportunity is located in Littleton, CO and will support multiple Department of War (DoW) programs. The candidate will ensure compliance through the implementation of mandatory information system security requirements on assigned information systems utilizing various government guidance publications (e.g., NISPOM, DoD 8500 series, NIST, CNSSI, DAAG, etc.) in support of development and operations.

The work that our CCS Professionals 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 within our large organization & portfolio, often getting exposure to many projects
• You will be a part of a company widely recognized as a top employer and ranked #38 on Forbes "2025 World’s Best Employers"

You will have an opportunity to make a difference in your first year by:

• Coordinating and managing interactions with government partners to facilitate and maintain 100% active status of all Authorizations to Operate.
• Overseeing technical administration of information system in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF) to include Continuous Monitoring, Plan of Action and Milestones (POA&M), and Change Management.
• Developing and implementing government-approved information system security procedures and system security plans for the operation of networked and standalone classified systems.
• Communicating, implementing, and managing a formal cybersecurity program
• Overseeing and conducting risk assessments on cybersecurity architecture and perform comprehensive investigations of computer security incidents, collaborating with outside agencies as required.

Other Key Responsibilities and Challenges of this role include (modify as appropriate for the position):

• Ensure configuration management (CM) for security-relevant software, hardware, and firmware.
• Assist and conduct cybersecurity education and training.
• Assist in conducting investigations of computer security violations and incidents.
• Handling mission requirements which may drive unpredictable work hours/schedules
• Working in a high paced environment driven by growing and ever-changing technical implementation requirements

Basic Qualifications

• Active Secret security clearance.
• Ability to obtain and maintain TS/SCI clearance.
• DoD8570/8140 IAT LevelII certification (e.g., Security+ CE, CySA+, CCNA Security, CND).
• Proven hands on experience with industry standard cybersecurity tools, including vulnerability scanners (e.g., Tenable), Security Incident and Event Management (SIEM) and auditing platforms (e.g., Splunk), endpoint protection solutions (e.g., Trellix), and package submission tools (e.g., eMASS, XACTA)
• Demonstrated ability to lead the Risk Management Framework (RMF) process to secure Authorizations to Operate (ATO), encompassing Defense Counterintelligence and Security Agency (DCSA) authorizations.
• Strong technical root cause analysis skills with a track record of developing corrective actions, policies, and procedures to resolve discrepancies.
• Experience conducting risk and vulnerability assessments in line with applicable regulations, such as the DCSA Assessment and Authorization Guide (DAAG), National Industrial Security Program Operating Manual (NISPOM), NIST Special Publication(SP) 800-53, and various DISA Security Technical Implementation Guides (STIGs)

Desired Skills

• DoD8570/8140 IAM LevelII certification (e.g., CISSP, CISM, CASP+/SecurityX).
• Proven track record of deploying and integrating complex, multi‑classification technologies across large‑scale, enterprise‑wide environments.
• Network device administration experience to include security best practices and monitoring of firewall, routers, and switches.
• Direct experience with the Signals Reconnaissance program.
• Strong background in Agile and DevSecOps methodologies and associated toolsets (e.g., JIRA, Confluence, Docker, Ansible, Git).
• In‑depth knowledge of the NISPOM and the DAAG.
• Familiarity with key security frameworks and guidelines, including the Joint Special Access Program (JSIG) Implementation Guide, CNSSI1253, and NIST SP800‑37 (Risk Management Framework)
• Experience with containerization
• Experience with Cross Domain Solutions
• Proficient in AI prompting as it applies to this position and practice.

Pay Information

Full-Time Salary Range: $95900.00 - $178100.00 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.