As a Senior Information Security Systems Engineer (ISSE) on a small team supporting the National Leadership Command Capability in Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications, you will deliver threat-informed cybersecurity products such as risk assessments, architecture reviews, and engineering guidance. Your daily tasks include conducting cybersecurity risk assessments, designing real-time threat detection systems, evaluating emerging technologies for security effectiveness, and collaborating with stakeholders to define and validate system security requirements. You must have a deep understanding of the Risk Management Framework (RMF) and be proficient in network technology and systems security engineering, with expertise in NIST Special Publications 800 Series, CNSSI 1253, and DoD 8500 standards. Additionally, you should possess CISSP or CASP+ certification, extensive experience in cybersecurity risk assessments, and the ability to present technical briefings to senior-level Department of Defense officials.
Conduct cybersecurity risk assessments and provide prioritized mitigation recommendations.
Design and implement real-time threat detection and analysis capabilities.
Evaluate candidate architectures against security requirements to identify gaps.
Research emerging technologies for their cybersecurity effectiveness.
Develop and validate system security requirements definitions and analysis.
What we're looking for
Active TS/SCI clearance with polygraph required.
At least 14 years of experience as an ISSE or System Engineer in the customer space.
CISSP or CASP+ certification required.
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 $184k
$106k
most similar roles pay here
$251k
This role pays more than
71%
of similar roles. Most pay
$142,400–$188,987
— the shaded band above.
At the midpoint, this role pays about
$184k
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.