Senior Linux Core Engineer
First seen by Alion on Nov 14, 2026.
Job Summary:
We are looking for an experienced Senior Linux Core Engineer with 10+ years of strong hands-on experience in Linux administration, system engineering, and infrastructure automation. The ideal candidate should have extensive expertise in Linux operating systems and strong automation skills using Ansible, Bash, Shell scripting, and Python.
The candidate will be responsible for managing, automating, optimizing, and troubleshooting enterprise Linux environments while ensuring high availability, performance, security, and operational efficiency.
Key Responsibilities:
- Design, implement, administer, and maintain enterprise Linux infrastructure across physical and virtual environments.
- Perform advanced Linux system administration, configuration, patching, upgrades, and performance tuning.
- Develop and maintain automation scripts using Ansible, Bash, Shell, and Python to automate infrastructure operations and repetitive administrative tasks.
- Create and manage Ansible playbooks, roles, inventories, and automation workflows for configuration management and server provisioning.
- Automate Linux server deployment, patch management, software installation, configuration changes, and health checks.
- Troubleshoot complex Linux OS issues related to CPU, memory, disk, processes, networking, boot failures, and system performance.
- Manage Linux services, systemd, kernel parameters, file systems, LVM, NFS, SSH, and user permissions.
- Perform root cause analysis (RCA) for critical infrastructure incidents and implement permanent solutions.
- Manage package management tools such as YUM, DNF, and RPM.
- Implement system hardening, security configurations, access controls, and vulnerability remediation.
- Work on infrastructure monitoring, capacity planning, system availability, and performance optimization.
- Collaborate with storage, network, virtualization, and DevOps teams for infrastructure operations.
- Maintain automation documentation, operational procedures, and technical standards.
- Participate in infrastructure migration, upgrades, disaster recovery, and business continuity activities.
Mandatory Technical Skills:
- Linux Administration: Strong hands-on experience with RHEL, CentOS, Oracle Linux, Ubuntu, or other enterprise Linux distributions.
- Ansible Automation: Extensive experience developing playbooks, roles, inventories, templates, and automated configuration management workflows.
- Bash/Shell Scripting: Strong scripting experience for Linux administration, monitoring, troubleshooting, and infrastructure automation.
- Python Automation: Experience developing Python scripts for infrastructure automation, system health checks, log analysis, and operational tasks.
- System Administration: Expertise in systemd, kernel management, process management, LVM, file systems, NFS, SSH, and package management.
- Troubleshooting: Strong expertise in Linux performance monitoring, debugging, and root cause analysis.
- Infrastructure Management: Experience managing large-scale enterprise Linux environments.
Skills
System Administration, Linux OS, Ansible, Python, Bash Scripting, Troubleshooting, Shell Scripting, IT Infrastructure