Senior Windows SysAdmin (TS/SCI Poly) — National Security

Leidos Inc; Corridor North (MD); On-site; USD 116,000 - 210,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% match

Flexible Schedules

Discounted Stock Purchase Plans

Technical Upskilling

Education and Training Support

Parental Paid Leave

And much more

Job summary

Leidos is seeking a Senior Windows System Administrator to join a high-performance team supporting a complex program. You’ll provide daily systems administration across VMware, Windows and Linux environments with a broad geographic footprint, deploying and sustaining new capabilities while ensuring security and compliance.

A TS/SCI withPolygraph is required. The role involves on-call support, collaboration with diverse workgroups, and implementing IT enhancements in a fast-paced, Agile SAFe

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related technical field with 12 years of experience.
• At least 7 years of Windows administration experience.
• At least 7 years of information security management experience (governance, risk, compliance, operational security).
• At least 5 years with: AD/DNS, GPOs, SCCM, Exchange administration and Exchange Management Shell.
• Experience with Windows PowerShell and scripting.
• Strong understanding of security protocols, standards and information security principles.
• Hands-on experience with IAVA management and security scanning.
• Familiarity with Windows/Linux, VMware, networking (switches/routers/LANs).
• Strong analytical skills and team working ability.

Responsibilities

• Monitor test infrastructure systems, applications, and processes; identify, track, and resolve issues.
• Support server, router, and firewall configuration; perform security management and performance tuning.
• Manage IAVA, security scans, and patch deployments across sites; publish status updates to users.
• Plan IT enhancements and support project work; respond to admin and maintenance issues on-call.
• Provide documentation and technical support to partner teams; ensure timely communications and collaboration.

Skills

Windows administration

Active Directory

DNS

Group Policy

PowerShell

Security governance

IAVA management

Windows command line

Linux knowledge

Monitoring and Ops

Education

Bachelor's degree in Computer Science/IT or related field

Tools

VMware

SCCM

Exchange

Ansible

SaltStack

Job description

Leidos is seeking a Senior Windows System Administrator to join a high-performance team supporting a complex program. You’ll provide daily systems administration across VMware, Windows and Linux environments with a broad geographic footprint, deploying and sustaining new capabilities while ensuring security and compliance.

A TS/SCI withPolygraph is required. The role involves on-call support, collaboration with diverse workgroups, and implementing IT enhancements in a fast-paced, Agile SAFe