Senior Systems Administrator - RHEL

SAIC is seeking a highly motivated and experiencedSenior Systems Administrator - RHELto join ourMAJESTIC Joint Program Office (JPO) TeaminSpringfield, VA. This individual will play an integral role in managing and optimizing mission-criticalRed 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 requireson-site support in a high-security, fast-paced environment.

Key Responsibilities

• Administer, configure, and maintainRed Hat Enterprise Linux (RHEL)systems, including patching, upgrades, tuning, and troubleshooting.
• Perform advanced system administration forvirtualized environments, such as VMware vSphere or Nutanix AHV.
• Implement and enforcesystem hardeningprocedures for RHEL platforms to align with security and compliance requirements, includingSTIGsandNIST 800-53guidelines.
• Automate regular administrative tasks usingBash,Python, or tools likeAnsible.
• Monitor and optimize system performance, storage, and network interfaces using tools like Splunk, Nagios, SolarWinds, or Grafana.
• Performdisaster recovery (DR)andhigh 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 withcross-functional teamsto 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.

Required Qualifications

Education

High School Diploma/GED

Certifications (CWF Requirements)

Candidates must satisfy Cybersecurity Workforce Framework (CWF)ID 451 (System Administrator – Intermediate Level)requirements, as outlined byNavy COOL.

This requirement can be met by possessing one or more of the following qualifying certifications:

CompTIA Cloud+

CompTIA Security+

GIAC Global Industrial Cyber Security Professional (GICSP)

GIAC Security Essentials Certification (GSEC)

Systems Security Certified Practitioner (SSCP)

OR This requirement can be met through

ABachelor’s Degreein Cybersecurity, Computer Science, IT, or a related field.

Experience

1-3 yearsof professional experience managing and supporting enterprise-levelIT environments.

Technical Skills

• Expert in managing Red Hat Enterprise Linux (RHEL) systems, including provisioning, upgrades, system tuning, patching, and performance optimization.
• Strong experience in system automation with tools like Ansible, Puppet, or Chef as well as scripting in Bash, Python, or PowerShell.
• Familiarity with high availability (HA) concepts, including clustering for Linux environments.
• Proficiency in monitoring and diagnostics tools (e.g., Splunk, SolarWinds, Grafana, or Nagios).
• Strong understanding of virtualization platforms, including VMware vSphere, Nutanix AHV, or Hyper-V.
• Knowledge of networking technologies and protocols, including TCP/IP, DNS, VLANs, and load balancing configurations for Linux systems.
• Experience supporting compliance with industry standards like RMF, NIST 800-53, and DoD cybersecurity guidelines.

Preferred Certifications (In Addition to CWF Requirements)

• Red Hat Certified Engineer (RHCE)certification (strongly preferred).
• Nutanix Certified Professional (NCP)certification or VMware Certified Professional (VCP).
• Familiarity withcloud platforms(e.g., Microsoft Azure, AWS) and hybrid cloud/hybrid IT implementations.
• Knowledge of storage technologies and backup solutions.
• ITIL v4certifications for service management processes.

Clearance Requirement

ActiveTS/SCIclearance with the ability to obtain and maintain aTS/SCI with Poly.

Candidate must be US Citizen

Work Environment and Notes

• On-Site Work:All work must be conductedon-sitein Springfield, VA.
• Program Scope:Supports on-premises enterprise IT environments, including virtualized Windows servers, MS SQL Server databases, and networking layers.
• Subcontractor Role:Responsibilities and compensation vary based on the subcontract agreement, with a competitive salary aligned to market rates and role-specific requirements.