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Leidos

Windows Server Administrator

Leidos

. Configure and troubleshoot Windows Server operating system in support of Active Directory, DNS and Certificate Authorities.

Posted 5/7/2026full-timeWashington • District of Columbia, Washington • 🇺🇸 United StatesSeniorLead💰 $92,300 - $166,850 per yearWebsite

Tech Stack

Tools & technologies
AzureCloudDNS

About the role

Key responsibilities & impact
  • Configure and troubleshoot Windows Server operating system in support of Active Directory, DNS and Certificate Authorities.
  • Demonstrate extensive understanding of Active Directory systems and be able to manage and maintain them
  • Demonstrate extensive understanding of DNS, Certificate Authority, Certificate Management and Authentication Services – ADFS, SAML, SSO, OKTA
  • Applying STIG and VPR adjustments as required
  • Manage the certificate environment to ensure certificates are issued on time and installed with no outage
  • Develop scripts to monitor and check health of Active Directory, DNS and Certificate Authorities.
  • Design, develop, and support scalable, redundant infrastructure to include physical, virtualized and cloud environments
  • Install, configure and manage a windows-based certificate authority server
  • Install, configure and maintain group management policies including role-based management
  • Set up administrator and service accounts, maintain system documentation, tune system performance, install system wide software
  • Apply NIST, DISA security controls, security hardening changes based on best practice
  • Validate and implement critical system patches, and allocate directory storage space
  • Improve existing infrastructure to incorporate latest technology best practices and cross application integrations
  • Day-to-day collaboration with engineering teams and system owners, to influence design, and architect solutions in multi-tiered environments
  • Manage individual project priorities, deliverables, and deadlines
  • Produce clear documentation for delivered solutions

Requirements

What you’ll need
  • Typically requires a Bachelor’s degree from an accredited college in a related discipline, with 8 - 12 years of prior relevant experience; or a Master’s degree with 6 - 10 years of prior relevant experience.
  • Additional years of experience and/or relevant certifications will be considered in lieu of degree.
  • BS in Computer Science, Systems Engineering, or related technical field or equivalent experience with at least 8+ years in systems engineering or administration (6+ years with a MS/MIS Degree)
  • Experience orchestrating workflows to execute at predefined times, including workflows that have data dependencies.
  • Proficiency in DevOps tools; scripting languages including PowerShell
  • 5 years of experience with Directory services (Microsoft Active Directory, Entra ID/Azure AD), Certificate Administration and DNS
  • 4 years’ experience providing Tier II & III Windows support for Windows OS
  • 3 years of Experience with ADFS, OKTA or other Authentication services
  • Experience managing certificates and certificate authorities like Microsoft, Digicert, Entrust/Sectigo and SSL.com
  • Ability to work well with people from many different disciplines with varying degrees of technical experience
  • Ability to work well without constant supervision
  • Ability to express complex technical concepts effectively, both verbally and in writing.

Benefits

Comp & perks
  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
Windows ServerActive DirectoryDNSCertificate AuthoritiesScriptingPowerShellNIST security controlsDISA security controlsCertificate ManagementInfrastructure design
Soft Skills
collaborationproject managementcommunicationproblem-solvingindependenceinfluence designdocumentationtechnical expressionteamworkadaptability
Certifications
Bachelor's degreeMaster's degreerelevant certifications