Information System Security Engineer

Leidos

Confirmed live yesterday High trust

Quick summary

Work type
On-site
Location
Stennis, MS
Salary
$107,900–$195,050 / yr
Posted
36 days ago
Freshness
Confirmed live yesterday

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $161k
This role $151k
$97k most similar roles pay here $214k

This role pays less than 57% of similar roles. Most pay $134,800–$187,500 — the shaded band above. At the midpoint, this role pays about $151k versus about $161k for comparable roles.

Based on 239 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 264 open roles on FindRole.

Listed pay typically runs $92,300–$166,850 across 245 roles with salary data.

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View all roles at Leidos

At a glance

TL;DR · Information System Security Engineer

Information System Security Engineer (ISSE) The Information System Security Engineer (ISSE) joins the Undersea Systems Division to serve as a subject matter expert for critical IT systems at Stennis Space Center. This role involves designing, developing, and implementing secure information systems while collaborating with engineers to integrate robust security measures against threats. The engineer performs technical security assessments, validates system requirements, and manages risk throughout the program lifecycle. Key responsibilities include maintaining documentation for Authority to Operate (ATO) status, managing configuration changes, and ensuring compliance with NIST Risk Management Framework standards. The role requires proficiency with STIGs and SCAP tools for configuration tracking. Candidates must possess a TS/SCI clearance and hold certifications such as Security+, CISSP, CISM, CAP, or ISSEP. This position addresses the challenge of securing information systems within complex operational environments and ensuring adherence to Department of Defense regulations.

What you'll do

  • Perform and review technical security assessments to identify vulnerabilities and ensure compliance with information assurance standards.
  • Design, develop, and implement secure information systems while integrating robust security measures into the system lifecycle.
  • Manage risk analysis and mitigation strategies for critical IT systems throughout the program life cycle.
  • Create and maintain all documentation required to obtain and maintain a system's Authority to Operate (ATO).
  • Implement and validate system security controls using STIGs and SCAP tools to ensure configuration compliance.
  • Enforce secure designs for trusted relations among external systems and manage changes while assessing security impacts.
  • Conduct field maintenance, system grooming, installations, and testing to ensure optimal performance in operational environments.

What we're looking for

  • Must have a BS degree and 8–12 years of prior relevant experience.
  • Must have an active TS/SCI clearance.
  • Must be a US citizen with a valid US passport.
  • Proven experience in a hybrid role combining system administration with information assurance.
  • Demonstrated experience as an ISSE, ISSM, ISSO, or SCA.
  • Experience creating documentation to obtain and maintain an Authority to Operate (ATO).
  • Proficiency with STIGs and SCAP tools for configuration tracking and compliance.
  • Deep understanding of the Navy Risk Management Framework (RMF) process.
  • Hold one or more of the following certifications: Security+, CISSP, CISM, CAP, or ISSEP (preferred).

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