AT&S

Security Engineer

• Administer, maintain, and troubleshoot large-scale Linux environments (RHEL, CentOS, Ubuntu)
• Perform OS and kernel patching across production and non-production systems with minimal downtime
• Troubleshoot complex Linux issues, including boot failures, initramfs issues, filesystem corruption, OOM events, and performance degradation
• Perform deep-dive analysis of CPU, memory, disk I/O, and networking issues
• Handle production incidents, perform RCA, and implement permanent fixes
• Develop and maintain shell scripts for automation, health checks, and validations
• Collaborate closely with application, storage, and network teams
• Maintain documentation, runbooks, and patching procedures

IT Security Specialist, Infrastructure Compute – Linux