IT Security Specialist, Infrastructure Compute – Linux

AT&S

Specialist IT Security & Infrastructure Compute (Linux) administering and optimizing enterprise Linux systems. Collaborating with global teams to ensure stability and security in production environments.

Posted 4/29/2026full-timeLeoben • 🇦🇹 AustriaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AnsibleKubernetesLinuxShell ScriptingVMware

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

Degree in IT, Computer Science, or Network Engineering
Proven experience in Linux system administration within enterprise environments
Deep understanding of Linux internals, including the boot process, systemd, services, and process management
Strong knowledge of memory management, OOM behavior, swap, and caching mechanisms
Extensive experience with OS and kernel patching in production and mission-critical systems
Proven ability to troubleshoot complex Linux issues under time-critical conditions
Strong shell scripting skills (Bash) for automation and operational tasks
Exposure to virtualization and container technologies such as VMware vSphere or Kubernetes is considered a plus
Familiarity with automation or monitoring tools (e.g., Ansible, CheckMK) is an advantage

Benefits

Comp & perks

A meaningful role with opportunities for long-term growth in an international environment
Chance to actively contribute to AT&S' success and to create value
A structured and tailor-made onboarding program along with continual training opportunities
Modern company canteen with freshly prepared meals every day
Free parking spaces and e-charging stations
Diverse health measures and a wide range of employee benefits

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Linux administrationRHELCentOSUbuntuOS patchingkernel patchingshell scriptingBashtroubleshootingperformance analysis

Soft Skills

collaborationproblem-solvingdocumentationincident managementroot cause analysis

Certifications

degree in ITdegree in Computer Sciencedegree in Network Engineering