00100 LEIDOS, INC.
00100 LEIDOS, INC.Verified Source

Windows Systems Administrator III

Onsite · Washington, District of Columbia
Posted August 12, 2026
payroll

Overview

Leidos seeks a Windows Systems Administrator III to support mission critical infrastructure in Suitland MD. This role involves administering and maintaining Windows server environments supporting enterprise infrastructure and secure mission operations. The ideal candidate has extensive experience managing Microsoft technologies and maintaining high availability Windows environments.

What You'll Do8

  • 1Administer and manage advanced Windows Server environments and Microsoft enterprise services
  • 2Maintain daily system operations through monitoring and troubleshooting
  • 3Perform performance tuning and hardware upgrades for reliability
  • 4Research and recommend new system technologies and improvements
  • 5Review and implement Information Assurance Vulnerability Alerts and bulletins
  • 6Install configure secure and maintain SQL databases
  • 7Support global operations with secure resilient Windows infrastructure
  • 8Travel to support U.S. Navy commands domestically and internationally

Requirements5

  • 1Bachelor's degree with 7+ years relevant experience or Master's with 5+ years
  • 2Active TS/SCI clearance in DISS
  • 3CompTIA Security+ and Windows Server certification
  • 4Extensive experience with AD DNS DHCP Exchange RDS VMware Omnissa desktop management
  • 5Advanced system troubleshooting expertise

Salary Insight

Salary not disclosed in listing

Location

Typeonsite
LocationWashington, District of Columbia

Required Skills

pythonawsreactkubernetescpc card
Share:

Similar open positions

Explore active roles that match your skills and interests.

00100 LEIDOS, INC.

00100 LEIDOS, INC.

6d agoWashington, District of Columbiapayroll

Systems Administrator Leidos Reston VA

Leidos seeks a Systems Administrator in Reston Virginia to lead installation configuration and maintenance of systems hardware and software. This role drives operational excellence through hands-on support and strategic improvements. Successful candidates will shape technology landscapes and deliver scalable solutions.

Competitive salary
Active DirectoryPowerShellDISA STIGs+3 more
Leidos

Leidos

12h agoWashington, District of Columbiapayroll

Principal Linux Systems Administrator Leidos

Leidos seeks a Principal Linux Systems Administrator to lead administration of mission-critical production environments. This role drives technical excellence and innovation within the Intelligence Sector's Cyber & Analytics Business Area.

131K–237K
LinuxAnsibleBash+2 more

02 CACI, INC.-FEDERAL

10d agoWashington, District of Columbiapayroll

Classified Systems Administrator - Washington DC

CACI seeks a Classified Systems Administrator to support mission-critical classified information systems in a secure environment. This role combines systems engineering and cybersecurity to ensure reliability and compliance while managing Windows Server virtualization and enterprise applications. The ideal candidate will lead system modernization efforts in a high-security setting.

90K–190K
Microsoft Windows ServerVMwareHyper‑V+9 more
00100 LEIDOS, INC.

00100 LEIDOS, INC.

8d agoWashington, District of Columbiapayroll

Systems Network Administrator SNA-2 Leidos Cybersecurity

Leidos seeks a Systems Network Administrator to lead mission critical network operations within the National Security Sector. This role drives security engineering and computer network operations while deepening expertise in Identity & Access Management. Candidates thrive in a mission driven environment focused on high impact systems.

92K–167K
Microsoft Identity ManagerForefront Identity ManagerPowerShell+4 more

System One

17d agoWashington, District of Columbiapayroll

Senior Windows Server Cloud DevOps Engineer

Own Windows Server production operations and Kubernetes environment while maintaining availability. Lead incident response and design secure scalable cloud architectures. Develop and manage Infrastructure as Code using Terraform and Ansible. Create CI/CD pipelines and DevSecOps automation. Design monitoring logging and alerting solutions. Enforce security best practices and produce technical documentation. Mentor junior engineers and provide technical leadership in DevOps practices. This is a senior role where you will own systems and drive improvements. The position offers a unique blend of on-premises and cloud expertise.

Competitive salary
windows serverkubernetesterraform+2 more

Boeing

14h agoWashington, District of Columbiapayroll

Windows Cloud Engineer - Mid-level

BI&A seeks a Windows Cloud Engineer to design implement and manage Windows-based cloud infrastructure across public private and hybrid environments. The role involves architecting scalable solutions ensuring high availability security and optimal performance of Windows workloads.

104K–126K
TS/SCI with active CI PolygraphWindows Server (2016/2019/2022)Microsoft Azure services and architecture+3 more