Senior Windows Systems Architect & SME

Leidos

Arlington (VA)

On-site

USD 116,000 - 210,000

Full time

5 days ago
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Job summary

Leidos is seeking a Senior Windows Systems Administrator (SA) to own the Windows environment within a mixed OS infrastructure. This role leads strategy, architecture, and operational excellence for enterprise Windows systems while coordinating with Linux SMEs for cross‑platform support.

The candidate should have 8+ years of relevant experience, Security+ or equivalent DoD 8570 IAT II certification, and an active TS/SCI clearance. Expect a challenging, mission‑critical environment.

Qualifications

  • Bachelor’s degree in a related discipline with 8+ years of prior relevant experience.
  • Security+ Certification or other DOD 8570 IAT Level II Certification
  • Active TS and SCI eligibility
  • Strong experience administering Windows Server environments.
  • Deep understanding of core Windows services and system management.
  • Working knowledge of Linux systems.
  • Solid troubleshooting and communication skills.

Responsibilities

  • Serve as the senior lead and primary Subject Matter Expert (SME) for all Windows Server environments, driving technical strategy, architecture decisions, and operational excellence.
  • Design, architect, implement, and sustain enterprise Windows infrastructure.
  • Own the health, performance, and availability of Windows systems; proactively monitor, analyze trends, and implement improvements to prevent issues before they impact operations.
  • Lead complex troubleshooting and incident resolution efforts, conducting deep root cause analysis and implementing permanent corrective actions across systems and services.
  • Establish and enforce enterprise standards, baselines, and hardening guidelines in alignment with security frameworks and compliance requirements.
  • Provide technical leadership and mentorship to system administrators and engineers; guide best practices and elevate team capabilities across Windows technologies.
  • Lead planning and execution of system lifecycle activities, including patching, upgrades, migrations, and modernization initiatives.
  • Provide cross‑platform support by performing basic Linux system administration and coordinating with Linux SMEs for complex issues.

Skills

Windows Server
Linux
Troubleshooting
Security+

Education

Bachelor's degree in related discipline
Master's degree

Job description

Leidos is seeking a Senior Windows Systems Administrator (SA) to own the Windows environment within a mixed OS infrastructure. This role leads strategy, architecture, and operational excellence for enterprise Windows systems while coordinating with Linux SMEs for cross‑platform support.

The candidate should have 8+ years of relevant experience, Security+ or equivalent DoD 8570 IAT II certification, and an active TS/SCI clearance. Expect a challenging, mission‑critical environment.

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