Systems Administrator - Senior

Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a System Administrator to join our team of passionate individuals in Warrenton, VA. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission.

Your Impact

The mission of the Lone Wolf program is to support, operate, and maintain the Distributed Continuity Integrated Network – Top Secret Enterprise Services (DCIN-TS ES) which is a DoD-provided, TS / SCI, integrated voice, video, and data, global communications network that facilitates collaboration among senior leaders and key staff. The Lone Wolf program boasts a professional workforce comprised of specialists throughout the Information Technology lifecycle and who contribute to a positive work environment.

The Lone Wolf Team is Mission Focused, Customer Oriented, Process Guided, and Solutions Driven. Candidates interested in joining the team must be critical thinkers, have a strong work ethic, and be able to work independently or as a member of a team in a dynamic environment that supports a critical and rewarding mission. We value candidates who are detail-oriented while also being able to think and react quickly to emerging and unique problem sets. To be successful, you must be able to rapidly adapt and learn how to operate the front and back end of new products and processes. The Team is expected to grow and is looking for people who can apply disciplined processes and provide imaginative solutions that enable the adoption of innovation and emerging technologies that create opportunities for transformative change.

Responsibilities

The duties and responsibilities of the Senior System Administrator include, but are not limited to, the following :

• 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
• Ensure systems comply with organizational policies and security standards
• 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

Clearance Required

Minimum Education

Minimum Years of Experience

Required Certifications

Level II certs include – CCNA Security, GISCP, GSEC, Security+ CE, SSCP

Preferred

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