Senior Linux System Engineer – Multi-Cloud & Kubernetes

Cornerstone Defense LLC; United States; On-site; USD 190,000 - 210,000; Full time

Job summary

Cornerstone Defense LLC in McLean, VA seeks a Linux System Engineer to support a diverse IT environment including Linux, Windows, virtualization, storage, and data center components. The role emphasizes building robust, scalable systems and contributing to the IC's multi-cloud initiative.

You will architect and harden Linux environments, deploy automation with Puppet and Ansible, and collaborate with cross-functional teams to deliver secure, efficient computing infrastructure.

Qualifications

• Bachelor’s Degree in computer science, information systems, engineering, mathematics, or equivalent experience, and six (6) years of relevant experience (see below bullets). Fourteen (14) years of equivalent military training and/or experience in an information technology field will be considered in lieu of a degree.
• Five (5) years or more of total intelligence community relevant work experience as a system administrator
• Five (5) years’ experience as a system administrator

Responsibilities

• Architect, deploy, and manage large Linux networked environments including deployment and configuration
• Needs to know Linux really well and have a working understanding of Rocky 9 and Kubernetes
• Installing, configuring, updating and removing system and application software
• Hardening Linux server installations
• Installing, configuring, updating and removing system hardware (servers, workstations, transceivers, network interface cards)
• Configuring NFS, SAMBA, and SAN
• Monitoring and allocating system resources (CPU, memory, and storage space)
• Proven experience creating, implementing, and maintaining scripts for process automation, infrastructure monitoring, and proactive reporting
• Auditing system log files, to include compliance audits
• Diagnosing and troubleshooting hardware and software problems
• Documenting hardware and software configurations, maintenance history, and backup history
• Implementing up-to-date system policies and procedures
• Updating/patching system operating systems
• Proven experience in all aspects of managing large Linux environments including the use of configuration management tools like Puppet and Ansible for centralized management and configuration of systems to enforce security controls
• Ability to utilize analysis tools to resolve complex network, systems, and application performance problems
• Responding to inquiries concerning all aspects of computer and network operations
• Creating and managing user/group accounts (ex: Active Directory (AD))

Skills

Linux

Kubernetes

Puppet

Ansible

NFS

SAN

Scripting

Education

Bachelor’s Degree in Computer Science, Information Systems, Engineering, Mathematics, or equivalent experience

14 years of equivalent military IT training/experience in lieu of degree

Tools

Puppet

Ansible

Active Directory (AD)

Job description

Cornerstone Defense LLC in McLean, VA seeks a Linux System Engineer to support a diverse IT environment including Linux, Windows, virtualization, storage, and data center components. The role emphasizes building robust, scalable systems and contributing to the IC's multi-cloud initiative.

You will architect and harden Linux environments, deploy automation with Puppet and Ansible, and collaborate with cross-functional teams to deliver secure, efficient computing infrastructure.