Systems Administrator

Amentum

About The Position

Amentum is seeking a Windows Systems Administrator to support our federal program in Warrenton, VA. Our mission is to operate and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN-TS ES). The DCIN-TS ES is a DoD provided, TS//SCI, integrated voice, video, and data, global communications network that facilitates collaboration among senior leaders and key staff. Responsibilities: Administer and maintain Windows server environments, including Active Directory, DNS, DHCP, and Group Policy Manage and support virtualization platforms such as VMware and/or Hyper-V Monitor system performance, review security logs, and apply critical updates and patches Implement robust backup strategies and disaster recover solutions Manage IP address allocation, subnetting, and VLAN configurations Collaborate with network engineers to diagnose and resolve LAN, WAN, and Wi-Fi connectivity issues Monitor critical network services like DNS and DHCP to ensure consistent system functionality Assist in reviewing firewall rules to support secure access to Windows servers Contribute to the planning and deployment of VPNs, remote access solutions, and network segmentation strategies Troubleshoot shared infrastructure issues, including domain name resolution and authentication failures Serve as a primary point of contact for customer issues by diagnosing, resolving, and tracking problems Manage and maintain customer accounts, including establishment, updates, and repairs, while identifying opportunities to improve customer service processes Provide responsive, multi-channel support (via email, phone, and remote access) to end-users, delivering timely troubleshooting and problem resolution Ensure high-quality customer experience through consistent and effective communication Respond to service requests and oversee the lifecycle tracking, documentation, and reporting of network systems and hardware assets Ensure compliance with disposal protocols, including the secure destruction of sensitive materials Utilize industry-standard tools to deliver remote support for desktop and peripheral devices, efficiently resolving technical issues while minimizing system downtime Maintain accurate records of technical incidents and service requests, escalating complex or unresolved issues according to established escalation procedures and organizational policies Administer enterprise software deployments using tools such as Microsoft Endpoint Configuration Manager (MECM), ensuring streamlined, secure, and automated application rollouts across all relevant systems Provide training and guidance to end-users to enhance technology adoption and efficiency Regularly communicate key updates, insights, and technical recommendations to senior leadership to support informed decision-making Continuously research and evaluate emerging technologies, tools, and best practices to maintain current expertise and ensure the organization benefits from up-to-date knowledge in relevant IT domains Actively participate in cross-functional and special projects, bringing technical insight and operational support to ensure successful outcomes aligned with organizational objectives

Requirements

Active Top-Secret clearance with SCI or TS with the ability to acquire SCI
High School Diploma plus 7 years of relevant experience
Must possess one of the following 8140 IAT Level II or III baseline certifications: o Level II certs include – CCNA Security, GISCP, GSEC, Security+ CE, SSCP o Level III certs include – CASP CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH
Minimum 7 years of relevant Information Technology Experience
Demonstrated experience administering enterprise software deployments using tools such as Microsoft Endpoint Configuration Manager (MECM)
Hands-on experience with enterprise technologies, including Windows Server 2019, Citrix Virtual Desktop, VMware ESXi, Active Directory, DHCP, and Service Accounts
Strong command of Group Policy for centralized management of user and computer settings across the domain
Skilled in using PowerShell to automate administrative tasks and enhance system management efficiency
Hands-on experience in VMware (vCenter, vSAN) and Nutanix Hyperconverged Infrastructure, including architecture, deployment, and the use of integrated management tools for efficient data center operations
Solid understanding of networking principles, protocols, and configuration best practices to ensure secure, reliable, and high-performing IT environments
Demonstrated experience implementing and managing data protection strategies and disaster recovery solutions to ensure business continuity and data integrity
Familiarity with MS Office applications such as Excel, Word, Outlook, SharePoint, Project and Visio
Must be able to work a 40-hour work week, normally Monday through Friday
Ability to work overtime during critical peaks and be available to meet last minute requests for overtime if needed
Ability to travel (25-40%) primarily within 75 miles

Nice To Haves

Bachelor’s degree in IT or related STEM field
Experience with ServiceNow
Microsoft Certified: Windows Server Hybrid Administrator Associate
CompTIA Network+ or Cisco CCNA for foundational networking knowledge

Responsibilities

Administer and maintain Windows server environments, including Active Directory, DNS, DHCP, and Group Policy
Manage and support virtualization platforms such as VMware and/or Hyper-V
Monitor system performance, review security logs, and apply critical updates and patches
Implement robust backup strategies and disaster recover solutions
Manage IP address allocation, subnetting, and VLAN configurations
Collaborate with network engineers to diagnose and resolve LAN, WAN, and Wi-Fi connectivity issues
Monitor critical network services like DNS and DHCP to ensure consistent system functionality
Assist in reviewing firewall rules to support secure access to Windows servers
Contribute to the planning and deployment of VPNs, remote access solutions, and network segmentation strategies
Troubleshoot shared infrastructure issues, including domain name resolution and authentication failures
Serve as a primary point of contact for customer issues by diagnosing, resolving, and tracking problems
Manage and maintain customer accounts, including establishment, updates, and repairs, while identifying opportunities to improve customer service processes
Provide responsive, multi-channel support (via email, phone, and remote access) to end-users, delivering timely troubleshooting and problem resolution
Ensure high-quality customer experience through consistent and effective communication
Respond to service requests and oversee the lifecycle tracking, documentation, and reporting of network systems and hardware assets
Ensure compliance with disposal protocols, including the secure destruction of sensitive materials
Utilize industry-standard tools to deliver remote support for desktop and peripheral devices, efficiently resolving technical issues while minimizing system downtime
Maintain accurate records of technical incidents and service requests, escalating complex or unresolved issues according to established escalation procedures and organizational policies
Administer enterprise software deployments using tools such as Microsoft Endpoint Configuration Manager (MECM), ensuring streamlined, secure, and automated application rollouts across all relevant systems
Provide training and guidance to end-users to enhance technology adoption and efficiency
Regularly communicate key updates, insights, and technical recommendations to senior leadership to support informed decision-making
Continuously research and evaluate emerging technologies, tools, and best practices to maintain current expertise and ensure the organization benefits from up-to-date knowledge in relevant IT domains
Actively participate in cross-functional and special projects, bringing technical insight and operational support to ensure successful outcomes aligned with organizational objectives