Linux Systems Administrator (Mid-Senior Level)

Integration Innovation - Huntsville, AL

Full-time - Mid Level

Huntsville, AL

Specialty Trade Contractors

About the position

The Linux Systems Administrator at i3 will support an Army Contract by providing technical expertise in managing and maintaining Linux operating systems and infrastructure. This role requires a strong understanding of Linux systems, security practices, and automation tools, with a focus on creating a secure and efficient computing environment. Candidates must hold a SECRET level security clearance and are expected to work collaboratively in an agile team setting.

Responsibilities

• Build, configure, and maintain standardized Linux Operating Systems (such as RHEL 9).
• Build and maintain virtual machine Linux golden images from source code management.
• Integrate Linux operating systems with Active Directory environments utilizing tools such as SSSD.
• Maintain software repository mirrors utilizing Red Hat Satellite servers and custom scripts.
• Integrate multifactor authentication, CAC/smartcard PKI and certificate management in a mixed Windows/Linux environment.
• Work with teammates on an agile project to provide a secure, versatile, efficient, reproducible, and highly scalable computing environment.
• Maintain system configurations with Infrastructure as Code (IaC) in git repositories.
• Perform Linux system configuration, patching, and vulnerability remediation utilizing Ansible, Terraform, Chef, GitLab, or other automation tools.
• Ensure satisfactory DevSecOps CI/CD pipeline operation on OpenShift clusters and other Linux systems.
• Deploy and maintain OpenShift cluster nodes on bare-metal and cloud infrastructure.
• Apply security controls as defined in DISA's Security Technical implementation Guides (STIGs).
• Assist with implementation of Risk Management Framework (RMF) 2.0 Continuous monitoring tools and processes.
• Support periodic Independent Security Assessments.
• Implement security configurations derived from zero-trust principles.
• Create, manage, and maintain network storage servers.
• Maintain and produce documentation in markdown and other formats as required.
• Assist Cybersecurity team with developing RMF accreditation documentation, SOPs, policies, and work instructions as needed.
• Continuously improve skills and the project by researching, training on, assessing, and implementing new technologies and processes.

Requirements

• Bachelor's degree in Information Technology, Cybersecurity, Data Science, Information Systems, or Computer Science and 6 years' experience or 10+ years equivalent experience.
• Must meet DoD 8140 Intermediate System Administrator qualifications, such as holding a Security+, Cloud+, GICSP, SSCP, or GSEC certification (or higher-level applicable certification).
• Must either possess or obtain a Linux computing environment training certificate in compliance with DoD 8140. Must be willing to attain Linux+ certification within 6 months.
• Ability to work with little or no direct supervision and in a team environment.
• Excellent customer service skills.
• Strong Linux (RHEL, CentOS) Operating System and troubleshooting skills.
• Strong DoD Security practices and knowledge.

Nice-to-haves

• Working experience with Linux automation tools.
• Working experience with infrastructure as code and source code management.
• OpenShift or Kubernetes experience.
• AWS, Azure, or GCP cloud computing experience.

Benefits

• 100% team member owned
• Outstanding insurance coverage
• 401(k) match
• Health and wellness incentives
• Tuition and certification reimbursement
• Generous PTO
• Fun culture with company activities
• Opportunities to give back to the community through charitable organization, i3 Cares