Information System Security Manager

Job ID: 731866BR Date posted: Jun. 11, 2026
Description:Lockheed Martin’s, Rotary & Mission Systems (LM
RMS), Classified Cyber Security invites you to step up to one of today’s most daunting challenges: the protection of exquisite government capabilities leading to warfighter supremacy against our peer and near peer adversaries. As a cyber security professional at Lockheed Martin, you’ll safeguard the sensitive information and warfighting capabilities that our citizens and the world depend upon to protect U.S. and ally interests.
Here, you’ll work alongside other cyber security
experts and military members to support their
military operational objectives by providing them
with a safe and secure operating environment. In
this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep these exquisite capabilities protected.
We are looking for an individual to serve as a
Classified Cyber Security Senior / Information System Security Manager (ISSM) and join our team’s efforts in supporting and defending classified networks.
The Work:
This Information System Security Manager (ISSM)
position is responsible for all cybersecurity efforts at the Clearwater, FL facility supporting development, maintenance, and oversight of the assigned classified and/or unclassified systems. Typical responsibilities of the ISSM may include but are not limited to:
• Developing and maintaining the site’s cybersecurity
program for assigned systems.
• Ensuring all applicable cybersecurity policy, plans
and procedures are followed.
• Ensuring required cybersecurity controls are
implemented and validated, to include continuous
monitoring actions for assigned systems.
• Developing and maintaining cybersecurity related
plans, procedures and guidance.
• Maintaining NSA COMSEC account as the COMSEC
Responsible Officer; to include performing custodian
duties.
• Monitoring and recognizing non-compliance,
suspicious and anomalous activity (i.e., threats), and
effectively reporting such activity and associated
risks to the appropriate parties.
• Ensuring plans of actions and milestones or
remediation plans are in place for vulnerabilities
identified during monitoring activity, audits,
inspections, etc. and implementing, or overseeing,
required corrective actions.
• Conducting role-based cybersecurity training for
assigned users.
• Creating, collecting and retaining data to meet
reporting requirements.
• Monitoring and correlating data (e.g., logs, events,
activity, etc.) from a variety of sources (e.g., Splunk,
ELA, ePO, ESS, ACAS, etc.) to identify and mitigate
threats, vulnerabilities and non-compliance.
• Investigating, analyzing and responding to cyber
events, incidents and non-compliance, to include
trend analysis, assembling detailed written reports
and briefing the appropriate parties.
• Identifying, implementing, and enforcing overall
security requirements for the proper handling and
storage of Government data and electronic media.
• Conducting self-inspections and preparing for
customer inspections.
• Communicating and interacting professionally
during the enforcement of security policy and
procedures.
Basic Qualifications:
• MUST BE A U.S. CITIZEN
• Final Transferable Secret security clearance; last
Periodic Re-investigation must be within the last five
(5) years or enrollment in Continuous Vetting
program
• Possess a valid certification that meets or exceeds
DoD 8570.01-M IAM I requirements. (e.g., CAP, CND,
Cloud+, Security+ CE)
• Experience executing Security Hardening on
Windows and/or Linux Operating Systems based on
approved DISA STIGs and SRGs
• Experience with standard cyber security tools and
applications (e.g., Splunk, ESS/Trellix ePO, ACAS/
Tenable.sc)
• Ability to build effective customer and partner
relationships
Desired Skills:
• Prior experience as an ISSO, ISSM or related DoD
Cyber Workforce Role
• Prior COMSEC experience.
• Proven knowledge of DCSA Assessment and
Authorization Process Manual (DAAPM) / DCSA
Assessment and Authorization Guide (DAAG), Joint
Special Access Program Implementation Guide
(JSIG), or Risk Management Framework (RMF) as a
Subject Matter Expert (SME)
• Excellent written and verbal communication skills
and ability to effectively interface with numerous
cognizant security agencies, customers and senior
leadership
• Knowledge of other security disciplines and how
they impact and interact with information system
security
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Secret
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. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.
Schedule for this Position: 4x10 hour day, 3 days off per week
Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration.
At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work.

With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

If this sounds like a culture you connect with, you’re invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs, and apply for roles that align with your qualifications.
Experience Level: Experienced Professional
Business Unit: RMS
Relocation Available: Possible
Career Area: Cyber Security
Type: Full-Time
Shift: First