Senior Information System Security Engineer

Leidos UK

Base: $107,900.00 - $195,050.00; bonus/equity: not...
Not specified (likely hybrid or onsite based on the nature of the work).
Active top secret clearance with sci eligibility
Dod risk management framework (rmf) experience
Nist sp 800-53 rev 4 or rev 5 implementation
Leidos UK is seeking an experienced Senior Information System Security Engineer to enhance enterprise data and analytics capabilities for the Department of War. The ideal candidate will have extensive experience in cybersecurity, particularly within the DoD framework, and be motivated by mission impact in complex environments

Job Summary

  • This role supports a high-visibility Department of War enterprise program delivering mission-critical data and analytics capabilities.
  • Candidates will work alongside government partners to translate operational requirements into scalable, production-ready security solutions.
  • The position requires maintaining continuous compliance with DoD policies while managing the full System Authorization lifecycle.

Matching Summary

Match Score: 85

Leidos UK is seeking an experienced Senior Information System Security Engineer to enhance enterprise data and analytics capabilities for the Department of War. The ideal candidate will have extensive experience in cybersecurity, particularly within the DoD framework, and be motivated by mission impact in complex environments.

Salary

Base: $107,900.00 - $195,050.00; Bonus/Equity: Not specified; Benefits: Not specified

Skills & Requirements

Must-have

  • Active Top Secret clearance with SCI eligibility
  • DoD Risk Management Framework (RMF) experience
  • NIST SP 800-53 Rev 4 or Rev 5 implementation
  • System security baseline design and validation
  • IATT and ATO package preparation

Nice-to-have

  • Experience with cloud-based security solutions
  • Knowledge of Joint Information Environment (JIE)
  • Agile methodology project management skills
  • Master's degree in Cybersecurity or IT
  • CI Poly clearance eligibility

Key Requirements

  • Active Top Secret (TS) clearance with SCI eligibility
  • Bachelor's degree in related technical discipline
  • DoD 8140 foundational qualification pathway certification
  • 8–12 years of relevant cybersecurity engineering experience
  • U.S. citizenship required for TS/SCI clearance

Work Rights

Must have US citizenship for TS/SCI clearance

Tailored Resume

Cover Letter