Senior Windows Systems Architect & SME

Leidos; Arlington (VA); On-site; USD 116,000 - 210,000; Full time

Job summary

Leidos seeks a Senior Windows Systems Administrator to own and lead the Windows environment within a mixed-OS data-center supporting DISA. You will shape strategy, enforce standards, and drive reliability across servers, storage, and networking components.

You will mentor teams, coordinate lifecycle activities, and collaborate with Linux SMEs to resolve complex issues while ensuring security compliance and high-availability operations.

Qualifications

• Bachelor's degree in a related discipline with 8+ years of prior relevant experience, or master's degree with 6-10 years of prior relevant experience.
• Security+ Certification or other DOD 8570 IAT Level II Certification
• Security Clearance Requirement: 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 SME for all Windows Server environments, driving strategy and operational excellence.
• Design, architect, implement, and sustain enterprise Windows infrastructure.
• Own health, performance, and availability of Windows systems; monitor and improve trends.
• Lead complex troubleshooting and root cause analysis across systems and services.
• Establish enterprise standards, baselines, and security-aligned hardening guidelines.
• Provide technical leadership and mentorship to admins and engineers.
• Lead system lifecycle activities: patching, upgrades, migrations, modernization.
• Provide cross-platform support by performing basic Linux admin and coordinating with Linux SMEs.

Skills

Windows Server administration

Windows services

Linux systems

Troubleshooting

Communication

Education

Bachelor's degree in related discipline

Master's degree

Job description

Leidos seeks a Senior Windows Systems Administrator to own and lead the Windows environment within a mixed-OS data-center supporting DISA. You will shape strategy, enforce standards, and drive reliability across servers, storage, and networking components.

You will mentor teams, coordinate lifecycle activities, and collaborate with Linux SMEs to resolve complex issues while ensuring security compliance and high-availability operations.