Senior System Administrator

What You Will Do We are actively seeking a Senior System Administrator to support the operation and sustainment of mission-critical IT systems.

In this role, you will be responsible for maintaining system availability, ensuring security compliance, and managing efficient configuration across diverse environments.

Key duties include monitoring the health and performance of hardware and software, automating deployments of baselines and patches, resolving system issues, and coordinating scheduled events across client, server, storage, network, and mobile platforms.

As a Senior System Administrator, you will oversee the full operational lifecycle of development and test environments supporting a critical national defense mission.

Your work will ensure system reliability and compliance by managing configurations, maintaining baselines, and collaborating closely with engineering and cybersecurity teams.

Key Responsibilities :

• Maintain and monitor the health and status of client / server / storage / network systems.
• Automate baseline configurations, deployments, and patching using tools like Ansible.
• Manage virtualization and containerization technologies (VMware / ESXi, Docker).
• Support Windows, Active Directory, and Linux systems (RHEL, Rocky, Ubuntu).
• Execute system inventory and configuration audits.
• Collaborate with ISSOs to ensure compliance with security policies and standards.
• Utilize CI / CD pipelines (e.g., GitLab) for system and software deployments.
• Respond to service requests and incidents using ticketing systems.
• Document system configurations, standard operating procedures, and change requests.
• Support disaster recovery planning and incident response activities.
• Present system status, updates, and metrics to stakeholders and leadership.

Required Skills and Qualifications :

Education and Experience :