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Information Systems Security Officer, Classified Cybersecurity Security Clearance

Job in Littleton, Arapahoe County, Colorado, 80120, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-01-06
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security
Job Description & How to Apply Below
Position: Information Systems Security Officer, Classified Cybersecurity with Security Clearance
Job Number 706127

Description:

TS/SCI clearance required with ability to receive Poly within 6 months. The Cybersecurity Specialist will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) for Special Programs located at the LM Waterton facility in Littleton, CO. In this role you will:

- 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).

- Auditing of the IS.

- 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.
- Ensure configuration management (CM) for security-relevant IS software, hardware, and firmware is maintained and documented in accordance with baseline.
- Ensure all information system security-related documentation is current and accessible to properly authorized individuals.
- Ensure records are maintained for workstations, software, servers, routers, firewalls, network switches, telephony equipment, etc. throughout the information system's life cycle.
- Evaluate proposed changes or additions to the information system, and advise the ISSM of their security relevance.
- Participate in internal/external security audits/inspections; performs risk assessments.
- Assist in conducting investigations of computer security violations and incidents, reporting as necessary to both the Contractor Program Security Officer (CPSO) and Program Managers.
- Ensure proper protection and/or corrective measures have been taken when an incident or vulnerability has been discovered.
- Communicate, implement and manage a formal Information Security / Information Systems Security Program together with ISSM and CPSO.
- Implement and enforce Information Security Policies and Procedures together with ISSM and CPSO.
- Review and oversee RMF Package authorizations together with ISSM and CPSO.

Basic Qualifications:

• TS/SCI able to receive Poly within 6 months

• DoD 8570 IAT Level II certification or ability to obtain within 6 months of hire

• Knowledgeable of operating system security requirements

Hands on experience with industry standard Information Assurance tools
Desired

Skills:

• Experience with developing, reviewing and maintaining RMF artifacts

• Experience with IS auditing and investigations

• Experience implementing new and complex technologies at multiple classification levels within large environments and at an Enterprise level

• Currently working in environment supporting IC customers

• Proved ability to obtain and maintain system ATOs

Hands on experience with ICD 503/JSIG and DAAPAM

• Have and maintain a DoD 8570 IAM Level III certification

• Have a Bachelors degree from an accredited college in a related discipline, or equivalent experience/combined education, with 2 years of professional experience; or 0 years of professional experience with a related Masters degree
Security Clearance Statement:
This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: TS/SCI w/Poly
Other Important Information You Should Know
Expression of Interest:
By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.
Ability to Work Remotely: Onsite Full-time:
The work associated with this position will be performed onsite at a designated Lockheed Martin facility.
Work Schedules:
Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees.…
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