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 REQUIREMENTS Required -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 migrations Preferred -Experience with large-sca

📌 Linux Administrator (Ciudad de México)
🏢 CRH Talento de IT
📍 Ciudad de México