Systems Administrator (TS/SCI with Poly Required)

About the role

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry. At GCI, we solve the hard problems. As a Systems Administrator, a typical day will include the following duties: The System Administrator will manage and maintain enterprise infrastructure systems including storage, virtualization, and cloud environments. This position requires hands-on technical expertise in NetApp and VMWare platforms, combined with automation and scripting capabilities to support patching, configuration management, and system accreditation processes. The administrator must be proficient in managing complex infrastructure environments while implementing automation solutions to enhance operational efficiency and security compliance.

Responsibilities

• Administer and maintain NetApp storage systems to ensure optimal performance and availability
• Manage VMWare virtualization infrastructure including vSphere/ESXi environments
• Execute hardware patching procedures across enterprise systems to maintain security and stability
• Develop and maintain Ansible scripts for configuration management and automation workflows
• Create and optimize Bash scripts for system administration tasks and operational efficiency
• Implement automation solutions for routine patching and maintenance of operating systems
• Support cloud infrastructure patching with automated processes and tools
• Manage PKI infrastructure and x509 certificate lifecycle across enterprise systems
• Administer LDAP directory services and authentication mechanisms
• Support system accreditation processes including documentation and compliance validation
• Monitor system performance and proactively address potential issues before they impact operations
• Coordinate and execute planned maintenance windows with minimal disruption to services
• Document system configuration, procedures, changes, and troubleshooting steps
• Operate as a DTO (Data Transfer Officer)
• Work closely with cross-functional teams to align infrastructure solutions with business objectives
• Provide technical guidance and knowledge transfer to team members
• Support incident response and root cause analysis for infrastructure-related issues

Qualifications

Bachelor’s Degree in Computer Science, Information Technology (IT), Computer Engineering, or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience. At least three (3) years of current experience administering complex infrastructure systems including storage, virtualization, and cloud platforms. A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.

Skills

• Experience implementing automation solutions to improve operational efficiency and reduce manual intervention
• Demonstrated experience managing NetApp storage systems in enterprise environments
• Proven expertise administering VMWare virtualization infrastructure (vSphere/ESXi)
• Hands-on experience with hardware patching procedures and maintenance operations
• Proficiency developing and maintaining Ansible scripts for configuration management and automation
• Strong Bash scripting skills for system administration and operational tasks
• Demonstrated expertise in PKI and x