System Administrator, Level 3

What You Will Do
As a Systems Administrator, Level 3 you will be responsible for maintaining and improving a hybrid infrastructure that includes both Linux and Windows systems, container platforms, and hyperconverged environments. You will script automation with Ansible, manage container orchestration with Kubernetes and Rancher, and support modern HCI platforms such as ProxMox, Harvester, and Nutanix. This position requires hands-on system administration experience and the ability to adapt in fast-paced, evolving IT environments.
Key Responsibilities

• Provide advanced system administration support for Linux environments, with some support for Windows servers.
• Develop and maintain automation scripts using Ansible for configuration management and deployment.
• Administer containerized workloads using Docker, Kubernetes, and Rancher.
• Maintain and troubleshoot ProxMox and other virtualization platforms.
• Support integration and management of Centrify for identity and access controls.
• Manage and monitor Harvester and other cloud-native HCI platforms.

• Configure and maintain Hyperconverged Infrastructure (HCI) platforms including:

• Azure Stack HCI, Cisco HyperFlex, Dell VxRail, HPE SimpliVity, NetApp HCI,
• DataCore SANsymphony, Nutanix, Scale Computing Platform, etc.

• Monitor performance, troubleshoot issues, and optimize resources across environments.
• Collaborate with DevOps and cloud teams to ensure seamless integration and scaling.
• Create and maintain system documentation and SOPs.

• Demonstrated, quantifiable experience in Linux system administration.
• Proficiency in scripting with Ansible for infrastructure automation.
• Hands-on experience with ProxMox virtualization platform.
• Working knowledge of Windows Server administration and maintenance.
• Experience with Centrify for centralized identity management.
• Knowledge of container technologies (Docker, Kubernetes) and orchestration tools like Rancher.
• Experience administering Harvester or similar open-source HCI platforms.
• Familiarity with one or more commercial HCI solutions (e.g., Nutanix, VxRail, Azure Stack HCI).
• Strong troubleshooting and analytical skills across systems and networks.
• Ability to work both independently and as part of a cross-functional team.

• Bachelor’s degree in Computer Science, Information Systems, Engineering, or a related field is preferred.
• Fifteen (15) years’ experience as a SA in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor’s degree

• Must meet DoD 8570 IAT Level II requirements

• Must possess an active TS/SCI with Polygraph security clearance to be considered for this role.

Independent Software is an Equal Opportunity Employer EOE, M/F/D/V.