✦ Luna Orbit — Cybersecurity

Principal System Security Engineer (Onsite) – P4

at Raytheon

📍 Largo, FL, US Onsite 💰 $107K – $204K USD / year Posted April 15, 2026
Salary $107K – $204K USD / year
Type Full-Time
Experience senior
Exp. Years 8 years
Education Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM)
Category Cybersecurity

This role is responsible for system security engineering and program protection work within a classified environment. The engineer maintains security subsystem requirements and architecture, executes security solutions (including COTS and FOSS), and participates in RMF assessments and authorizations.

  • Maintain security subsystem specifications and architecture adherence
  • Participate in RMF assessments and authorizations
  • Develop and implement systems security solutions
  • Optimize Windows-based server infrastructure in distributed information systems
  • Execute hands-on implementation of security solutions using COTS and FOSS

You will optimize and support Windows-based server infrastructure in distributed systems while implementing and validating security solutions. The scope includes maintaining security subsystem specifications and architecture, and performing work aligned to Risk Management Framework (RMF) processes for authorizations.

The ideal candidate is a senior security engineer with 8+ years of relevant experience supporting system security engineering and program protection for classified environments. They hold an active DoD TS/SCI clearance and are experienced with Risk Management Framework (RMF) assessments and authorizations, plus hands-on security solution implementation on Windows-based server infrastructure.

Active and transferable U.S. government issued security clearance is required prior to start dateActive and existing security clearance required on day 1Active and transferable U.S. government issued DoD Top Secret Security SCI clearance and the ability to obtain Special Access ClearanceTypically requires a Bachelor’s Degree in ScienceTechnologyEngineering or Mathematics (STEM) and 8 years of prior relevant experience
WindowsCOTSFOSS
system security engineeringprogram protectionclassified information system operations and maintenancesecurity subsystem specificationssecurity subsystem architectureRisk Management Framework assessments and authorizationsconfidentiality integrity availabilityWindows based server infrastructuredistributed information systemcorrective/preventive maintenancerecurring operationsaccount managementsystem optimizationtechnical and process document reviewsCOTSFOSShands-on security solution implementation
system security engineeringprogram protectionoperations and maintenance of classified information systemmaintaining security subsystem specificationssecurity subsystem architecture adherenceRisk Management Framework (RMF) assessmentsauthorizationssecurity solutions developmentsecure system product executionconfidentialityintegrity and availabilityoptimizing Windows based server infrastructuredistributed information systemcorrective/preventive maintenancerecurring operations functionsaccount managementsystem optimizationtechnical and process document reviewssystem administration tasksCOTS and FOSS technologyhands-on technical implementation of security solutionsCOTSFOSS
guidance in support of administrative taskingresolving system administrationengineeringand integration issuesparticipating in technical meetingscoordinationtechnical collaboration
Industry Defense
Job Function Engineer and implement security solutions for classified information systems using RMF and security subsystem architecture requirements
Role Subtype Security Engineer
Tech Domains Cybersecurity, Windows Server
Visa Sponsorship No
Principal System Security EngineerSystem Security EngineerSSECyber Security Engineeringsystem security engineeringprogram protectionclassified information systemsecurity subsystem specificationssecurity subsystem architectureRisk Management FrameworkRMFauthorizationsconfidentialityintegrityavailabilityWindows based server infrastructuredistributed information systemsystem administrationaccount managementcorrective/preventive maintenanceCOTSFOSSsecurity solutionsSpecial Access ClearanceDoD Top SecretTS/SCI

Active and transferable DoD Top Secret (TS/SCI) security clearance required on day 1, U.S. citizenship required, Bachelor’s degree in STEM plus 8 years of prior relevant experience

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