Senior Windows Systems Administrator - Secret Clearance

Peraton; Beltsville (MD); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Peraton is seeking a Windows Systems Administrator (Journeyman) to support the DoS DSCM program from Beltsville, MD. You will provide hands‑on administration of enterprise Windows infrastructure, patch compliance, and cross‑team collaboration to ensure secure, stable operations across enclaves.

Responsibilities include AD operations, patching, vulnerability remediation, and script development to improve efficiency.

Qualifications

• Bachelor’s degree and a minimum of 9 years of relevant experience; a Master’s degree with 7 years of experience; or a PhD with 4 years. An additional 4 additional years of relevant experience may be substituted in lieu of a bachelor's degree.
• Must hold (or obtain prior to start) at least one approved certification, maintained as a condition of employment: CASP+ CE, CCNA Cyber Ops, CCNA‑Security, CCNP Security, CEH, CFR, CISA, CISSP (or Associate), Cloud+, CySA+, GCED, GCIA, GCIH, GICSP, SCYBER, VCA‑DCV, PPDA, Agile IC, or SNOW App Dev.
• Experience with enterprise technologies such as Windows Server, Active Directory, virtualization platforms (e.g., Nutanix), and monitoring tools (e.g., Splunk, SolarWinds), along with basic familiarity with Linux operating systems given the primarily Linux-based environment.
• U.S. Citizenship required.
• An Active Secret security clearance with eligibility to obtain a final Top Secret security clearance.
• Ability to support core business hours (0800–1700).

Responsibilities

• Administer and support Windows Server systems across enterprise environments, including OpenNet, ClassNet, and associated enclaves.
• Perform routine system maintenance, patching, and configuration updates in alignment with established standards.
• Troubleshoot server, operating system, and service‑related issues to ensure system availability and performance.
• Support Active Directory operations, including authentication troubleshooting, directory health, and access control validation.
• Assist with ARS‑related activities within connect.sbu environments.
• Troubleshoot authentication issues, account lockouts, and directory‑related problems.
• Ensure proper use of attributes (e.g., extensionAttribute10, iPost‑related attributes) to support integrations such as Okta and iPost.
• Execute patching activities in accordance with DT maintenance windows and compliance requirements.
• Monitor iPost scoring and coordinate with Scanning and System Administration teams to remediate findings.
• Apply STIG‑aligned configurations and support vulnerability remediation efforts in coordination with Cybersecurity teams.
• Monitor system health and performance using SolarWinds and Splunk, and perform remediation of system‑level issues.
• Develop and maintain PowerShell scripts to improve efficiency and reduce manual effort.
• Support backup validation and assist with system recovery efforts in alignment with COOP expectations.
• Support virtualized environments (e.g., Nutanix) and assist with system integrations and infrastructure changes.
• Troubleshoot and resolve system dependencies and connectivity issues in coordination with supporting teams.
• Maintain documentation for system configurations, procedures, and troubleshooting steps.
• Continue developing technical proficiency in Windows systems, Active Directory, and enterprise tools used within the environment.
• Maintain a working knowledge of Linux systems to support cross‑platform operations within a primarily Linux‑based environment.

Skills

Windows Server administration

Active Directory

Scripting

Documentation

Education

Bachelor’s degree

Master’s degree

PhD

Tools

Nutanix virtualization

SolarWinds

Splunk

Okta

iPost

PowerShell

Job description

Peraton is seeking a Windows Systems Administrator (Journeyman) to support the DoS DSCM program from Beltsville, MD. You will provide hands‑on administration of enterprise Windows infrastructure, patch compliance, and cross‑team collaboration to ensure secure, stable operations across enclaves.

Responsibilities include AD operations, patching, vulnerability remediation, and script development to improve efficiency.