As a Senior Information Security Systems Engineer (ISSE) joining the National Leadership Command Capability team, you will provide critical IA Architecture Analysis and Security Engineering Support for Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. Your daily responsibilities include conducting cybersecurity risk assessments, supporting real-time threat detection systems, evaluating candidate architectures against security requirements, and advising on innovative solutions to mitigate risks. You will work closely with stakeholders to define security objectives and validate system designs while ensuring compliance with Agency security policies. Essential skills include expertise in RMF, NIST Special Publications 800 Series, CNSSI 1253, and DoD 8500 standards, along with strong writing and presentation abilities for senior-level briefings.
Conduct cybersecurity risk assessments and provide prioritized mitigation recommendations.
Design and implement real-time threat detection and analysis capabilities.
Analyze candidate architectures to identify security gaps and recommend mitigations.
Evaluate emerging technologies for their cybersecurity effectiveness.
Develop and validate system security requirements definitions and designs.
Integrate information assurance systems and components with varying classification levels.
What we're looking for
Active TS/SCI clearance with polygraph
CISSP - ISSEP certification
At least 20 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer in the customer space
Expertise in Risk Management Framework (RMF) and cybersecurity risk assessments
Proficiency in network technology, systems security engineering, and identifying security weaknesses
Experience developing system security requirements and conducting gap analysis
Knowledge of NIST Special Publications 800 Series, CNSSI 1253, and DoD 8500 standards
Market check
Salary context
Above market
How this pay compares to similar roles
Similar $166k
This role $216k
$101k
most similar roles pay here
$297k
This role pays more than
85%
of similar roles. Most pay
$142,400–$190,362
— the shaded band above.
At the midpoint, this role pays about
$216k
versus about
$166k
for comparable roles.
Based on 240 similar postings.
Employer
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.
Leidos currently has
214 open roles
on FindRole.
Listed pay typically runs
$107,900–$195,050
across 204 roles with salary data.