Systems Administrator, Lead Associate - TS​/SCI w​/poly

Systems Administrator, Lead Associate - TS/SCI w/poly Job Location s

US-MD-Annapolis Junction

Requisition :

Position Category:
Cyber Security

Clearance:
Top Secret/SCI w/Poly

We are currently seeking a Network / Desktop Administrator to support and maintain enterprise network and end-user computing infrastructure. This is a hybrid role combining hands-on switching and network support with desktop/endpoint administration. The ideal candidate is comfortable working across the stack - from configuring VLANs and port security on Cisco switches to imaging endpoints and troubleshooting Windows 10/11 clients - while delivering responsive, professional customer support to end users.

This role balances infrastructure work with day-to-day operational support and requires someone who can work independently on routine tasks and escalatI appropriately on complex issues. Duties may also include:

• Configure, maintain, and troubleshoot Cisco switches running IOS-XE and NX-OS.
• Implement and manage port security, including MAC-based controls and violation remediation.
• Support enterprise network fundamentals: TCP/IP, subnetting, DHCP/DNS behavior, and Layer 2/Layer 3 troubleshooting.
• Support and help maintain VDI / thin-client infrastructure, including endpoint provisioning and connectivity troubleshooting.
• Perform endpoint imaging and deployment via PXE boot and associated deployment tooling.
• Administer Windows 10 and Windows 11 endpoints, including configuration, troubleshooting, and lifecycle support.
• Execute patch management and remediate vulnerabilities in response to IAVAs, ensuring systems remain compliant with security baselines and STIGs.
• Use CLI and administrative tooling - PuTTY, Power Shell, and Windows CMD - for configuration, diagnostics, and routine automation.
• Support STE/STN environment and associated operational procedures.
• Perform Active Directory tasks such as account and group management, OU navigation, and basic Group Policy awareness.
• Document configurations, procedures, and changes; follow existing standards and conventions.
• Provide high-quality customer service and end-user support, including ticket handling and clear communication with non-technical staff.
• Coordinate across teams on cross-functional dependencies.

#Peraton Royal Move

#AJCM

#MDFSP

• Active TS/SCI security clearance with a current polygraph is required
• Bachelors degree in a technical discipline and 5 years of system administration experience. Five years of additional experience may be substituted for a BS.
• 1-2 years of combined experience in network administration to include working knowledge of Cisco switches on IOS-XE and NX-OS platforms.
• 2+ years experience administering the customer's classified VDI / thin-client desktop platform
• 2+ years experience Windows 10 and/or Windows 11 administration and troubleshooting.
• Hands-on experience with PXE-based imaging/deployment.
• Proficiency with PuTTY, Power Shell, and Windows command-line tools.
• Experience with Active Directory user/group administration.
• Experience with endpoint management platforms (SCCM/MECM, Big Fix).
• Familiarity with security baselines and STIG compliance.
• Exposure to ticketing/ITSM systems JIRA.
• Basic firewall awareness and coordination experience (e.g., Cisco Firepower/ASA).
• Familiarity with remote administration tools.

• Understanding of networking fundamentals: VLANs, subnetting, TCP/IP, DHCP, DNS, and switching concepts.
• Understanding port security concepts and remediation.
• Strong customer service orientation and clear written/verbal communication.
• Understanding of patch management processes and vulnerability remediation (IAVA-driven).

  Benefits:
  Peraton offers enhanced benefits to employees supporting this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap, and eligibility to participate in an attractive bonus plan.

  Salary Range Estimate:

  The estimate displayed represents the typical salary range for this position and is just one component of Peraton's total compensation package for employees. Other rewards may include annual bonuses, short- and long-term incentives, and program-specific awards. In addition, Peraton provides a variety of benefits to employee"s.

  Peraton Overview

  Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest…