System Administrator

System AdministratorLocation: Tampa, FL, US, 33607 Work Arrangement: OnsiteWho We Are: At SES Space & Defense, we deliver secure, resilient connectivity and integrated space solutions for customers operating in the world's most demanding environments. As part of SES S.A., a global leader in satellite-enabled communications, we combine capabilities across all orbits with extensive global ground infrastructure, managed networks, hosted payload solutions, and mission integration services to support communications, sensing, data transport, and operational resilience worldwide. Our vertically integrated space and ground capabilities bring together satellite capacity, terrestrial infrastructure, advanced network technologies, and deployed user terminals to support mission-critical government operations around the world. We are a trusted partner to the U.S. Federal Government and national security community, allied governments, NATO, NASA, and other civilian agencies, delivering reliable, high-performance solutions when mission success is critical. At SES Space & Defense, our people are our competitive advantage. You'll work alongside a mission-driven team committed to integrity, innovation, accountability, and delivering real-world impact for customers whose missions matter most.What You'll Do / Impact You'll Own: In this role, you'll be responsible for administering, maintaining, and supporting enterprise infrastructure and mission systems that enable secure, reliable, and resilient operations for SES Space & Defense customers. You'll execute the day-to-day administration of enterprise servers, virtual machines, storage platforms, and mission applications while ensuring system availability, security, compliance, and operational readiness across secure environments. Administer, monitor, and maintain enterprise Windows Server, Linux, virtual, and physical infrastructure to ensure system availability, performance, operational continuity, and capacity management. Perform daily administration of enterprise servers, virtual machines, storage systems, and mission applications, including account provisioning, identity and access management, software installation, patch management, backups, restores, and routine maintenance activities. Monitor system health, capacity, performance, and operational status while responding to incidents, service requests, and technical support tickets in accordance with established service levels. Install, configure, patch, upgrade, and troubleshoot operating systems, enterprise applications, virtualization platforms, and supporting infrastructure while maintaining approved configuration baselines. Administer Active Directory, Group Policy, DNS, DHCP, file services, enterprise storage, backup and recovery solutions, identity and access management, and enterprise monitoring tools. Implement approved system changes, update configuration baselines, maintain system documentation, and develop runbooks and standard operating procedures supporting enterprise operations. Support cybersecurity initiatives through system hardening, STIG implementation, vulnerability remediation, RMF artifact development, patch compliance, secure configuration management, and monitoring dashboard maintenance. Perform system monitoring, performance tuning, root-cause analysis, and corrective maintenance while escalating complex technical issues to engineering teams as appropriate. Collaborate with network, cybersecurity, engineering, and program teams to support infrastructure deployments, technology refreshes, system upgrades, and customer requirements. Provide Tier II/Tier III technical support for mission-critical systems, participating in scheduled maintenance, after-hours support, and occasional travel as required to support operational objectives.Who You Are: You are an experienced Systems Administrator with a strong foundation in enterprise server administration, virtualization, storage, and infrastructure support within secure and mission-critical environments. You excel at maintaining highly available systems, proactively resolving operational issues, and ensuring enterprise platforms remain secure, compliant, and operational while supporting Department of Defense or Federal Government customers. Active U.S. Government Secret security clearance with the ability to maintain the required clearance; U.S. Citizenship required. Bachelor's degree in Information Technology, Computer Science, Information Systems, Cybersecurity, or a related technical discipline, or equivalent combination of education and relevant experience. Five (5) or more years of experience administering enterprise Windows Server, Linux, virtual machines, storage systems, and enterprise infrastructure. Current DoD 8570/8140 Information Assurance Technical (IAT) Level II certification (e.g., CompTIA Security+ CE or equivalent). Hands-on experience administering Microsoft Windows Server, Linux, virtualization platforms, Active Directory, Group Policy, DNS, DHCP, enterprise storage, backup and recovery solutions, and identity and access management. Experience performing account provisioning, patch management, backup and recovery, system monitoring, capacity management, incident response, and configuration baseline maintenance within enterprise environments. Experience implementing STIG hardening, supporting RMF artifact development, vulnerability remediation, and secure configuration management in Department of Defense or Federal Government environments. Strong analytical, troubleshooting, and problem-solving skills with experience responding to incidents, resolving technical issues, and escalating complex problems when appropriate. Experience maintaining technical documentation, configuration records, runbooks, and standard operating procedures supporting enterprise operations. Excellent written and verbal communication skills with the ability to effectively support customers, technical teams, and program leadership.This role is onsite at Pope AAF, NC SES Space & Defense is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to any characteristic protected by applicable federal, state, or local law