Systems Administrator

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 experi