Mid-Level Linux Systems Administrator

Integration Innovation - Huntsville, AL

Full-time - Mid Level

Huntsville, AL

Specialty Trade Contractors

About the position

i3 is seeking a Mid-Level Linux Systems Administrator to support an Army Contract. The Mid-Level Linux Systems Administrator will provide technical expertise supporting information system components, infrastructure integration, and maintenance. Candidates for this position must possess, at a minimum, a United States SECRET level security clearance. This role involves building, configuring, and maintaining standardized Linux Operating Systems, such as RHEL 9, across various technical use cases. The administrator will also be responsible for creating and maintaining virtual machine Linux golden images from source code management, integrating Linux operating systems with Active Directory environments using tools like SSSD, and maintaining software repository mirrors utilizing Red Hat Satellite servers and custom scripts. In addition, the Mid-Level Linux Systems Administrator will integrate multifactor authentication, CAC/smartcard PKI, and certificate management in a mixed Windows/Linux environment. The role requires collaboration with teammates on an agile project, focusing on providing a secure, versatile, efficient, reproducible, and highly scalable computing environment. The administrator will maintain system configurations with Infrastructure as Code (IaC) in git repositories and perform Linux system configuration, patching, and vulnerability remediation using automation tools such as Ansible, Terraform, Chef, and GitLab. The position also involves ensuring satisfactory DevSecOps CI/CD pipeline operation on OpenShift clusters and other Linux systems, deploying and maintaining OpenShift cluster nodes on bare-metal and cloud infrastructure, and applying security controls as defined in DISA's Security Technical Implementation Guides (STIGs). The administrator will assist with the implementation of Risk Management Framework (RMF) 2.0 Continuous monitoring tools and processes, support periodic Independent Security Assessments, and implement security configurations derived from zero-trust principles. Additionally, the role includes creating, managing, and maintaining network storage servers, producing documentation in markdown and other formats, and assisting the Cybersecurity team with developing RMF accreditation documentation, SOPs, policies, and work instructions as needed. Continuous improvement of skills and project contributions through research, training, and implementation of new technologies and processes is also expected.

Responsibilities

• Build, configure, and maintain standardized Linux Operating Systems (such as RHEL 9) in various technical use cases.
• 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 with a focus on providing 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.
• Work with teammates to 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 (previously known as Security Control Assessor - Validation or SCA-V).
• 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 Risk Management Framework (RMF) accreditation documentation, SOPs, policies, and work instructions as needed.
• Continuously improve your 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.
• Must have excellent customer service skills.
• Requires strong Linux (RHEL, CentOS) Operating System and troubleshooting skills.
• Strong DoD Security practices and knowledge.

Nice-to-haves

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

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
• Countless opportunities to give back to the community through our charitable organization, i3 Cares