System Administrator II

Position Summary

We are currently seeking a System Administrator II to support the configuration, integration, sustainment, and troubleshooting of systems and infrastructure within the Missile Defense Analysis, Testing, and Engineering (MD ATE) Network Operations Center (NOC). This position primarily supports test events by developing an end-to-end understanding of test architectures, system dependencies, data flows, and communications paths and using that knowledge to identify, isolate, and resolve technical issues before and during test execution.

This position is responsible for administering and troubleshooting Windows Server environments, domain services, virtual machines, file services, high-availability resources, system security, and other infrastructure supporting test operations. The selected candidate will also troubleshoot issues across system and network boundaries, including application services, TCP/UDP communications, firewall policies, and physical connectivity. This requires the ability to follow communications through the test architecture, use tools such as Wireshark and system logs to isolate failures, modify firewall rules as required, identify Layer 1 connectivity issues, and coordinate with network, cybersecurity, and other technical personnel to resolve issues affecting test execution.

This role requires strong system administration and troubleshooting skills, with the ability to work across system and network boundaries during test operations. The selected candidate must be able to understand how systems communicate within an integrated test architecture, trace issues across the environment, determine where failures are occurring, and work with network, cybersecurity, and other engineering teams to restore required functionality.

Responsibilities

• Learn and maintain a working understanding of end-to-end architectures supporting MD ATE test events, including systems, interfaces, dependencies, data flows, communications paths, and supporting infrastructure
• Provide hands-on technical support for pre-test, test, and post-test activities by identifying, isolating, troubleshooting, and resolving system and connectivity issues that could impact test execution
• Troubleshoot issues across physical connectivity, TCP/UDP transport, firewall policies, operating systems, virtualized infrastructure, server and application services, and other dependencies within the test architecture
• Capture and analyze network traffic using Wireshark and other diagnostic tools to validate communications, identify TCP/UDP connectivity issues, and determine where failures are occurring within end-to-end data paths
• Access, configure, and troubleshoot enterprise firewalls, including reviewing and modifying firewall rules and policies required to support approved test-event communications
• Identify and resolve Layer 1 connectivity issues, including physical connections, cabling, patching, interfaces, and other infrastructure supporting test-event connectivity
• Configure, administer, maintain, and troubleshoot Windows Server environments, Domain Controllers, Active Directory, DNS, Group Policy, file services, and supporting system infrastructure
• Configure, manage, and troubleshoot virtual machines and supporting infrastructure within Microsoft Hyper-V environments
• Administer file servers and associated high-availability resources to maintain availability and continuity of services supporting test and lab operations
• Apply DISA STIGs, perform system hardening, remediate ACAS vulnerability findings, maintain required system patches, and coordinate cybersecurity and compliance activities with the cyber team
• Maintain system configurations, technical documentation, test-event architecture information, troubleshooting procedures, and configuration changes necessary to support repeatable test operations
• Coordinate with network engineers, cybersecurity personnel, government engineers, external sites, and other technical teams to troubleshoot cross-functional issues and support test-event integration and execution

Required Knowledge, Skills, & Abilities

Education/Licensure/Credentials

Required:

• Bachelor's degree in related fields such as computer science, computer engineering, information systems, network engineering, systems engineerin