5-7 years of systems administration experience in mixed Microsoft Windows and Red Hat Enterprise Linux (RHEL) environments
Hands-on expertise in installing, configuring, and troubleshooting Linux operating systems
Proven ability to monitor and resolve Linux infrastructure health and performance issues
Experience with security hardening using CIS Benchmarks and/or STIG requirements
Familiarity with VMware vSphere and/or VMware Cloud Foundation (VCF) environments
Strong troubleshooting skills for application, infrastructure, and connectivity issues
Experience with automation through scripting and configuration management tools
Responsibilities
Administer and maintain enterprise Linux environments, focusing on Red Hat Enterprise Linux (RHEL)
Ensure system availability and security through proactive monitoring and troubleshooting
Support and manage VMware vSphere and VMware Cloud Foundation (VCF) infrastructure
Implement security best practices, including CIS and STIG hardening standards
Troubleshoot and resolve various infrastructure and security issues
Monitor and optimize system resources for performance
Collaborate with teams on architecture and operational initiatives
Benefits
Opportunity to work in a complex enterprise environment
Engagement in continuous improvement and modernization efforts
Collaboration with skilled infrastructure and systems teams
Exposure to modern virtualization technologies
Support for professional development and certifications
Full Job Description
Job Description
Join a team that powers critical infrastructure and keeps mission-essential systems running securely, efficiently, and reliably. SAIC is seeking a skilled Linux Systems Administrator who thrives in complex enterprise environments and enjoys solving challenging technical problems across Linux, virtualization, and infrastructure platforms.
In this role, you'll be a key member of the systems engineering team, responsible for the health, performance, security, and lifecycle management of our Linux-based infrastructure. You'll work with modern virtualization technologies, support enterprise-scale environments, implement automation, and help drive continuous improvement across our server and infrastructure ecosystem.
What You'll Do:
Administer and maintain enterprise Linux environments, with a primary focus on Red Hat Enterprise Linux (RHEL)
Ensure system availability, performance, and security through proactive monitoring, troubleshooting, patching, and upgrades
Support and manage VMware vSphere and VMware Cloud Foundation (VCF) infrastructure
Implement and maintain security best practices, including CIS and STIG hardening standards
Troubleshoot and resolve infrastructure, application, operating system, connectivity, and security issues across on-premises environments
Monitor and optimize system resources including CPU, memory, storage, and overall server performance
Manage local repositories and coordinate operating system patching and lifecycle activities
Collaborate with infrastructure and systems teams on architecture, deployment, and operational initiatives
Develop and enhance automation through scripting and configuration management tools
Support Microsoft-based services and technologies, including Active Directory, DNS, DHCP, and related infrastructure components
Contribute to ongoing modernization efforts and continuous improvement across the enterprise technology stack
Qualifications
Experience providing systems administration support within mixed Microsoft Windows and Red Hat Enterprise Linux (RHEL) environments
Hands-on experience installing, configuring, administering, and troubleshooting Linux operating systems
Experience monitoring Linux infrastructure health, performance, and availability, and proactively resolving issues
Experience troubleshooting and resolving application, infrastructure, connectivity, and security issues in on-premises environments
Experience diagnosing and remediating server performance issues involving CPU, memory, storage, and system resources
Experience implementing Linux security hardening using CIS Benchmarks and/or STIG requirements Experience maintaining local repositories and performing system patching, updates, and lifecycle management activities
Experience supporting VMware vSphere and/or VMware Cloud Foundation (VCF) environments
Experience performing general systems administration and infrastructure support tasks across multiple technology platforms
Experience collaborating with infrastructure and systems engineering teams to support enterprise environments
Experience administering Microsoft infrastructure services, including Active Directory, DNS, DHCP, and related network services
Experience supporting desktop and workstation hardware
Experience implementing and managing Role-Based Access Control (RBAC) within multi-tenant environments
Experience developing or maintaining automation through scripting
Ability to support multiple priorities in a dynamic enterprise IT environment
Preferred Qualifications:
Red Hat Certified System Administrator (RHCSA) and/or Red Hat Certified Engineer (RHCE) certification
Experience with Ansible, Puppet, or similar configuration management and automation tools
Working knowledge of Windows 11, Windows Server, VMware vCenter Server Appliance (VCSA), and VMware Cloud Foundation (VCF)
Working knowledge of enterprise infrastructure hardware, appliances, and supporting technologies
Experience performing Windows Server installation, configuration, patching, upgrades, migrations, and ongoing administration
Experience supporting enterprise virtualization, server infrastructure, and hybrid technology environments
About SAIC
Science Applications International Corporation (SAIC) is a technology integrator in the technical, engineering, intelligence, and enterprise information technology markets. SAIC has approximately 26,000 employees and operates in more than 70 countries. The company was founded in 1969 and is headquartered in Reston, Virginia. SAIC provides services to the U.S. government, including the Department of Defense, the intelligence community, and civilian agencies. The company also serves commercial customers in the healthcare, energy, and financial services sectors.
