Overviewi3 is seeking an experienced Linux Systems Administrator with an emphasis on Red Hat OpenShift to support a U.S. Army program. The selected candidate will be responsible for deploying, configuring, securing, maintaining, and troubleshooting enterprise Linux systems and containerized infrastructure within a highly secure computing environment.
This position will play a key role in the continued development, integration, and sustainment of our Red Hat OpenShift platform, supporting traditional enterprise services, DevSecOps capabilities, and emerging AI/ML workloads.
The ideal candidate will possess a strong foundation in Red Hat Enterprise Linux (RHEL), hands-on experience with OpenShift or Kubernetes administration, and a demonstrated ability to automate infrastructure operations. Familiarity with Red Hat OpenShift AI, NVIDIA Run, or GPU-accelerated computing environments is highly desirable.
Responsibilities
Linux Systems Administration
- Build, configure, secure, and maintain Red Hat Enterprise Linux (RHEL) operating systems across physical and virtual infrastructure.
- Develop, maintain, and manage standardized Linux system images and configurations using source code management and automation tools.
- Integrate Linux systems with Microsoft Active Directory using SSSD and other enterprise identity management solutions.
- Configure and maintain multifactor authentication, CAC/smartcard PKI authentication, and certificate management in mixed Windows/Linux environments.
- Maintain software repositories, package mirrors, and patch management solutions using Red Hat Satellite and supporting automation scripts.
- Perform operating system patching, vulnerability remediation, performance tuning, troubleshooting, and lifecycle management.
Red Hat OpenShift & Container Platform Administration
- Deploy, configure, administer, and maintain Red Hat OpenShift clusters across bare-metal and virtualized infrastructure.
- Manage OpenShift cluster nodes, operators, networking, persistent storage, authentication, role-based access controls (RBAC), and platform updates.
- Troubleshoot cluster health, container workloads, resource utilization, and underlying infrastructure dependencies.
- Support integration of OpenShift with enterprise networking, storage, virtualization, and identity management services.
- Assist development teams with containerized application deployments, cluster resource allocation, and DevSecOps CI/CD pipeline operations.
- Support the implementation of highly available, scalable, and secure container platforms.
- Assist with OpenShift platform standardization, operational documentation, monitoring, and ongoing sustainment.
Automation & DevSecOps
- Develop and maintain Infrastructure as Code (IaC) configurations using Ansible, Terraform, GitLab, and related automation tools.
- Automate Linux and OpenShift deployment, configuration, patching, and maintenance activities.
- Collaborate with engineering and development teams to support secure CI/CD pipelines and containerized application delivery.
- Maintain configuration baselines, operational procedures, and technical documentation.
Cybersecurity & Compliance
- Apply and maintain security configurations in accordance with DISA Security Technical Implementation Guides (STIGs).
- Support DoD Risk Management Framework (RMF) requirements, system hardening, vulnerability management, and continuous monitoring.
- Assist with security assessments, remediation activities, and maintenance of approved system configurations.
- Ensure Linux and OpenShift environments operate in accordance with established cybersecurity policies and security requirements.
Qualifications
Bachelor's degree in Cybersecurity, Computer Science, Computer Engineering, Information Systems, or a related field, or equivalent relevant experience.
- At least 6 years of hands-on experience in systems administration, with strong emphasis on Linux/Red Hat
- Must have DoD 8570/8140 IA Certification (Security+ CE) or be able to obtain certification within 6 months of hire date.
- Demonstrated experience administering Red Hat Enterprise Linux or comparable enterprise Linux distributions.
- Working knowledge of Red Hat OpenShift or Kubernetes architecture, administration, and container orchestration.
- Experience with Linux system installation, configuration, patching, troubleshooting, and performance monitoring.
- Familiarity with virtualization technologies and enterprise infrastructure environments.
- Experience with automation, scripting, and configuration management tools such as Ansible, Bash, Python, or Terraform.
- Understanding of Linux networking, DNS, storage, authentication, and security fundamentals.
- Familiarity with Git-based source control and Infrastructure as Code practices.
- Strong analytical, troubleshooting, documentation, and team collaboration skills.
- Ability to obtain and maintain a U.S. SECRET security clearance.
Preferred Qualifications
- Hands-on experience deploying, administering, or troubleshooting Red Hat OpenShift clusters in enterprise environments.
- Experience with Red Hat OpenShift AI, including AI/ML workload deployment, model serving, or platform integration.
- Familiarity with NVIDIA Run for GPU resource management, scheduling, and workload orchestration.
- Understanding of GPU-accelerated computing, NVIDIA GPU Operator, and AI/ML infrastructure.
- Experience supporting OpenShift in disconnected, air-gapped, or restricted network environments.
- Knowledge of Kubernetes operators, Helm, container registries, persistent storage, and cluster networking.
- Experience integrating OpenShift with enterprise storage, virtualization, and network infrastructure.
- Familiarity with Red Hat Satellite, enterprise software repository mirrors, and disconnected patch management.
- Experience implementing DISA STIGs, DoD RMF security controls, and secure system configurations.
- Relevant Red Hat certifications such as RHCSA, RHCE, or Red Hat Certified OpenShift Administrator.
Knowledge/Skills
- Knowledge of office administration and procedures.
- Exceptional judgment capabilities and relationship management skills.
- Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.
- Interact with a diverse array of customers and staff in a professional and courteous manner.
- Work independently with accountability for accurate and complete results.
- Be extremely organized and exceptionally detail oriented.
- Work well both independently and in a team environment.
- Be energized by a fast-paced work environment.
- Must be able to communicate with others effectively.
- Analyze information and respond appropriately.
- Manage time wisely and prioritize tasks.
- Provide superior customer service.
- Multi-task in a pleasant manner.
- Work well under pressure.
PHYSICAL DEMANDS
- The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
- While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.
- The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.
- Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.
- Regular i3 hours are 8:00 a.m. - 5:00 p.m. Monday-Friday, however, additional hours may be required on occasion. Regular and punctual attendance is required.
