System Administrator

SES Space & Defense; Tampa (FL); On-site; USD 90,000 - 130,000; Full time

Job summary

SES Space & Defense in the United States seeks a seasoned Systems Administrator to manage enterprise servers, virtualization, storage, and identity services for secure missions. You will ensure availability, security, and compliance across Windows Server and Linux platforms.

Onsite at Pope AAF, NC, you will implement STIG hardening, RMF artifacts, and incident response while collaborating with cyber, network, and program teams and providing Tier II/III support.

Qualifications

• Active U.S. Government security clearance preferred or required.
• Experience managing enterprise Windows Server, Linux, virtualization, and storage.
• Knowledge of RMF/ STIG hardening and DoD/Federal environments.

Responsibilities

• Administer, monitor, and maintain enterprise Windows Server, Linux, virtual, and physical infrastructure.
• Perform patching, backups, restores, and routine maintenance activities.
• Support cybersecurity through STIG implementation and RMF artifact development.
• Provide Tier II/III support and collaborate with cybersecurity, network, and program teams.

Skills

Windows Server

Linux

Virtualization

Storage systems

Active Directory

Group Policy

Identity management

Patch management

RMF/STIG

Incident response

Documentation

Education

Bachelor's degree

DoD IAT II cert

Job description

Who 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.

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.

• This position is contingent upon contract award ***

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.

The anticipated base salary range for this position is $[MIN] to $[MAX]. The final base salary offered will be determined based on factors such as the position’s location, the candidate’s relevant skills, experience, and qualifications.

Where applicable, this position may also be eligible for an annual bonus. Employees are eligible to participate in SES Space & Defense’s benefits programs, which include paid vacation, sick and personal leave; medical, dental, vision, life, and disability insurance; a 401(k)-retirement plan; and others.