Lead Systems Administrator

NTC OVERVIEW: We are seeking a Lead Systems Administrator to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. We’re looking for the best and the brightest to join us in supporting this mission. If meaningful work, initiative, creativity, and continuous self-improvement are important to your career, join our growing team and discover What's Next for you. Mission Focus: NT Concepts is seeking a Lead Systems Administrator to support the DoD enterprise Military Housing system. This complex system of 34 web-based modules is used by over 10,000 active users to meet the housing needs of over 2.5 million service members, DoD civilians, and their families. Clearance : Active Top-Secret clearance Location/Flexibility: Local to the DC Metro Area, Remote Flexible Responsibilities: Ability to manage a team of network engineers, system administrators and interface with off-site hosting group to maintain, troubleshoot, and manage upgrades to an enterprise application system. Serve as the primary administrator for SAP Business Objects (BOXI) on Windows Server, including installation, configuration, patching, upgrades, troubleshooting, and performance monitoring. Support and maintain Dynatrace for application and infrastructure monitoring; configure dashboards, alerts, and integrations; analyze performance data and assist with incident root cause analysis. Support DNS changes as required for application and infrastructure needs; coordinate with network teams to ensure proper DNS resolution and network connectivity. Support Splunk SIEM for log aggregation, monitoring, and security compliance; maintain forwarders, indexes, and dashboards; assist with log analysis for troubleshooting and audit purposes. Provide backup support for F5 Big-IP/Big-IQ load balancer administration, including configuration changes, SSL certificate management, and troubleshooting application delivery issues. Administer Windows/Linux servers, VMware/ESXi, Nutanix, NetApp, Tintri, and cloud-integrated infrastructure across on-premise and DoD/Navy-approved cloud environments. Ensure ACAS findings are remediated; STIGs applied; and cybersecurity compliance is maintained in accordance with DoD and Navy cybersecurity requirements. Ensure Oracle quarterly patches are reviewed, tested, and applied in timely fashion; track and remediate vulnerabilities. Oversee the management of user accounts in Production, QAE, and Staging; Jira/Confluence access; reset SFG and privileged accounts. Ensure the management and maintenance of Commvault/Hyperscale backup infrastructure; conduct quarterly DR exercises; manage off-site tape process. Ensure the management and updates of TLS/SSL certificate lifecycle using Digicert; maintain certificate inventory across all environments. Track, renew, and procure software support and support agreements and hardware…