Senior Security Engineer

Leidos

Confirmed live today High trust

Quick summary

Work type
On-site
Location
Bethesda, MD
Salary
$107,900–$195,050 / yr
Employment
Full-time
Posted
40 days ago
Freshness
Confirmed live today

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $182k
This role $151k
$94k $235k
below market most similar roles pay here above market

This role pays less than 72% of similar roles. Most pay $148,325–$215,178 — the blue band above. At the midpoint, this role pays about $151k versus about $182k 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 434 open roles on FindRole.

Listed pay typically runs $92,300–$166,850 across 352 roles with salary data.

Most-posted roles

View all roles at Leidos

At a glance

TL;DR · Senior Security Engineer

JOB TITLE: Senior Security Engineer Leidos is seeking a Senior Security Engineer to serve as the technical lead for day-to-day security activities supporting enterprise and isolated environments. This role involves providing technical leadership and oversight for security operations, vulnerability management, RMF/ATO support, and continuous monitoring activities. The individual will lead and mentor security personnel, establish priorities, and coordinate security activities across infrastructure and engineering teams. Key responsibilities include performing vulnerability scanning using ACAS and Tenable/Nessus, implementing DISA STIGs, and reviewing security logs via Splunk. The position requires expertise in Windows Server 2016/2019, Active Directory, McAfee HBSS, and networking technologies like TCP/IP and encryption. The role solves the business problem of maintaining a robust security posture by translating compliance requirements into actionable technical tasks and managing security risks for restricted environments.

What does a Security Engineer earn?

Median $192050 from 105 postings across 38 companies.

See salary data

What you'll do

  • Lead and coordinate day-to-day security operations and assign activities across the security team.
  • Manage the full vulnerability management lifecycle from identification and analysis to remediation and validation.
  • Perform vulnerability scanning and analysis using ACAS, Tenable/Nessus, or equivalent technologies.
  • Oversee the implementation and validation of DISA STIGs and approved security configuration baselines.
  • Support and oversee RMF/ATO activities including security documentation, control evidence, and POA&Ms.
  • Review security logs and events using Splunk or equivalent SIEM technologies to address identified issues.
  • Provide security oversight and technical support for isolated or restricted environments.
  • Develop and maintain repeatable security processes for compliance monitoring and evidence collection.

What we're looking for

  • Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent work experience.
  • At least 8 years of relevant experience, though additional years may be considered in lieu of a degree.
  • Active TS/SCI clearance with Polygraph required, or active TS/SCI with willingness to obtain a Polygraph.
  • US Citizenship is required.
  • Must meet DoD 8570.11-IAT Level II certification requirements, such as Security+ CE, CCNA-Security, GSEC, or SSCP.
  • Experience with Windows Server 2016/2019, Active Directory, IIS, DNS, DHCP, Exchange, and DFS.
  • Experience implementing security controls, networking technologies, and tools like Splunk, McAfee HBSS, and ACAS.
  • Experience managing and/or supervising a team of technical professionals (preferred); CISSP or CASP certification (preferred).

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