Senior Systems Administrator - RHEL

SAIC · Springfield

SAIC is seeking a highly motivated and experienced Senior Systems Administrator - RHEL to join our MAJESTIC Joint Program Office (JPO) Team in Springfield, VA. This individual will play an integral role in managing and optimizing mission-critical Red Hat Enterprise Linux (RHEL) systems in a hybrid IT enterprise environment.

The ideal candidate will have in-depth expertise in RHEL system administration, including configuration, maintenance, and performance optimization. Additionally, experience with virtualized environments and enterprise systems, including Windows Server and HCI solutions, is critical. The candidate will ensure system security, reliability, and efficiency while collaborating with cross-functional teams to support operations. This position requires on-site support in a high-security, fast-paced environment.

Key Responsibilities:

Administer, configure, and maintain Red Hat Enterprise Linux (RHEL) systems, including patching, upgrades, tuning, and troubleshooting.
Perform advanced system administration for virtualized environments, such as VMware vSphere or Nutanix AHV.
Implement and enforce system hardening procedures for RHEL platforms to align with security and compliance requirements, including STIGs and NIST 800-53 guidelines.
Automate regular administrative tasks using Bash, Python, or tools like Ansible.
Monitor and optimize system performance, storage, and network interfaces using tools like Splunk, Nagios, SolarWinds, or Grafana.
Perform disaster recovery (DR) and high availability (HA) operations on Linux-based and hybrid enterprise systems.
Manage centralized logging and monitoring for Linux systems to ensure audit compliance and detect vulnerabilities.
Collaborate with cross-functional teams to ensure smooth integration of RHEL systems with Windows Server, HCI technologies, and other enterprise IT environments.
Document standard operating procedures (SOPs), configuration changes, topology maps, and troubleshooting guides.
Support the evaluation of emerging RHEL and infrastructure technologies and recommend new solutions to enhance infrastructure performance and security.

SAIC® is a premier mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives.

We are approximately 23,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.3 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom.

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