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‑scale on‑prem to A

📌 Linux administrator (México)
🏢 CRH Talento en IT
📍 México