The Linux Administrator is responsible for the reliability, security, and performance of Linux-based systems supporting on-premises and AWS EC2 environments.
The role exists to operate, migrate, optimize and support RHEL workloads as they transition from on-prem infrastructure into AWS, ensuring service continuity, security compliance, and cost-effective cloud operations.
Success is measured by system stability, successful migration outcomes, automation maturity, and operational efficiency.RESPONSIBILITIES & DUTIES-Administer, configure, and maintain Linux servers (RHEL, Amazon Linux, Ubuntu) across on-premises and AWS EC2 environments, ensuring availability, performance, and security.
- Support and execute on-premises to AWS EC2 lift-and-shift migration activities, including system assessment, AMI creation, cutover planning, post-migration validation, and issue remediation.
-Manage AWS EC2 infrastructure including instance provisioning, right-sizing, AMIs, EBS volumes, security groups, IAM role integration, and lifecycle management.
-Implement automation and configuration management using tools such as Ansible, shell scripting, or Terraform to reduce manual effort and configuration drift.
-Monitor system health, troubleshoot incidents, perform root-cause analysis, and participate in on-call rotation to meet SLAs during steady-state and migration phases.
-Apply OS hardening, patching, vulnerability remediation, and support compliance and security standards across hybrid environments.POSITION REQUIREMENTSRequired-Bachelor's degree in Computer Science, Information Technology,



or equivalent practical experience-5+ years of experience as a Linux Systems Administrator in enterprise environments-2+ years of hands-on experience administering AWS EC2 in production-Strong experience administering RHEL in on-prem and/or cloud environments-Experience supporting business-critical systems during infrastructure changes or migrationsPreferred-Experience with large-scale on-prem to AWS migration initiatives-Experience in hybrid infrastructure environments-AWS Certified SysOps Administrator- Associate or higher or equivalent certification (preferred, not required)-Experience with Infrastructure-as-Code (IaC)(Terraform, Ansible, CloudFormation)· Experience with scripting/automation in Bash, Python, or PowerShellTechnical Skills-Advanced Linux system administration, troubleshooting, and performance tuning-AWS EC2, EBS, AMIs, security groups, and IAM role integration-Lift-and-shift migration concepts, system validation, and post-migration support-Automation and scripting (Bash, Ansible, Terraform preferred)-OS hardening, patch management, and vulnerability remediationPhysical Abilities / Demands-Ability to support after-hours maintenance windows and possible on-call rotations-Ability to work extended periods at a computer and respond to incidents as requiredKNOWLEDGE & COMPETENCIES- Ability to make operational and technical decisions related to system configuration, migration readiness, troubleshooting, and cloud resource optimization-Capable to plan and execute work independently, coordinate with network, cloud, application, and security teams, and escalates risks appropriately, providing technical guidance to peers or project teams.
-Must be able to troubleshoot both routine operational issues and complex migration-related problems involving OS behavior, cloud infrastructure, and application dependencies.
Requiring disciplined troubleshooting, adaptability, and a bias toward automation and long-term operational improvement rather than one-off fixes.Offer-Protegido de gastos medicos mayores familiar, Seguro de vida, fondo de ahorro, vales de despensa, vales de restaurante, bono anual, apoyo deportivo, prima vacacional del 100%, 15 días de vacaciones, 30 días de aguinaldo y estacionamiento.

📌 Linux Administrator (Xico)
🏢 CRH Talento de IT
📍 Xico