Amentum

Amentum

Network System Administrator

US-DC-Washington · Full-time

No sponsorship$120k-$150kDetected 1 day ago
BashPowerShellAzureLinuxCybersecurityComplianceProcurementTCP/IPDNSFirewallCiscoNetwork EngineeringHIPAALeadershipCompTIA

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odds of building a lasting career here

52Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role70
Entry-level history0
PERM / green-card track0
Lottery odds (Level III)83
Fits your clock70

Sponsors, but it's cap-subject — you still face the weighted lottery (~45% per draw at Level III). Good if you win; have a cap-exempt backup on your list.

Lottery odds assume a STEM candidate.

Personalize to your clock →

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About the role

  • Health, dental, and vision insurance
  • Paid time off and holidays
  • Retirement benefits (including 401(k) matching)

Responsibilities

  • Administer and maintain complex LAN/WAN environments, including routers, switches, firewalls, VPNs, VLAN configurations, and network segmentation.
  • Monitor network performance, troubleshoot connectivity issues, and implement configuration changes to ensure high availability and security.
  • Maintain detailed documentation of network diagrams, configurations, system baselines, and operational procedures.
  • Administer, maintain, and optimize Proxmox VE virtualization clusters to ensure high availability and resource efficiency.
  • Manage Windows Server environments, including Active Directory, Group Policy, DNS, patch management, antivirus updates, and system upgrades.
  • Deploy, configure, and manage Windows and Linux operating systems within virtualized and physical environments.
  • Perform regular backups and disaster recovery validation to ensure data integrity across all server and storage environments.
  • Continuously monitor system logs, network traffic, and security alerts. Investigate, document, and report incidents, vulnerabilities, and threats.
  • Collaborate with ISSO/ISSM and security staff to ensure all system changes comply with RMF (Risk Management Framework) and local security policies.
  • Desktop Support & IT Lifecycle Management

Requirements

  • Must possess an active US Government Top Secret security clearance with the ability to obtain SCI and must consent to a CI Polygraph.
  • Please note US Citizenship is required to maintain a Top Secret clearance.
  • Associate degree or higher in Computer Science, Information Technology, Network Engineering, or a related field (or equivalent work experience) with at least 5 to 8 years of relevant IT experience.
  • Networking: Expert knowledge of network protocols (TCP/IP, DNS, VLANs, VPNs), LAN/WAN management, routing, switching, and hands-on experience with hardware firewalls and VPNs.
  • Systems Administration: Proven experience with Windows Server, Active Directory, and Linux system administration.
  • Automation: Ability to automate administrative tasks via scripting languages such as PowerShell, Bash, or Python.

Nice to have

  • Cisco Certifications: CCNA or CCNP.
  • Additional CompTIA Certifications: Network+, Server+.
  • Familiarity with security best practices and regulatory compliance frameworks (e.g., HIPAA, PCI, SOC 2, RMF).
  • Strong background in provisioning, maintaining, and troubleshooting complex networks.
  • Understanding of Risk Management Framework (RMF), STIG applications, and operating within highly regulated government IT environments.
  • Experience with Splunk, BigFix, Fortinet, SharePoint.
  • Experience in a leadership role
  • Compensation Details:

Compensation

  • The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued.
  • Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits

  • Benefits Overview:
  • Our health and welfare benefits are designed to support you and your priorities.
  • Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
  • Note: Benefits may vary based on employment type, location, and applicable agreements.

Equal opportunity

  • Amentum is proud to be an Equal Opportunity Employer.

Visa & Work Authorization

  • Must possess an active US Government Top Secret security clearance with the ability to obtain SCI and must consent to a CI Polygraph
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This listing is sourced directly from Amentum's careers page and normalized into a canonical job model.