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IT Infrastructure & Security Specialist (Focus Linux Server)

AT & S Austria Technologie & Systemtechnik Aktiengesellschaft -
Leoben, ST

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Be part of our team!

AT&S is a leading global manufacturer of high-end IC substrates and printed circuit boards. AT&S industrializes leading-edge technologies for its core business segments Mobile Devices & Substrates, Automotive & Aerospace, Industrial and Medical and high-performance computing for AI applications. We are looking for talent eager to shape the future of our interconnected world. With plants in Austria, China, India, Malaysia and sales offices around the globe, we offer excellent career opportunities for creators, innovators and enablers with the drive to make a difference.

To enhance our successful IT Team at the Headquarters in Leoben, we are looking for a passionate

IT Infrastructure & Security Specialist (Focus Linux Server)

In your role, you will ensure the high availability, stability, and security of enterprise Linux systems supporting mission‑critical production environments. You will operate, maintain, and optimize Linux platforms, taking responsibility for OS and kernel patching, performance tuning, troubleshooting, and automation of operational processes. Working in close collaboration with global IT and infrastructure teams, you will contribute to reliable system operations, lifecycle management, and continuous improvement of enterprise computing environments.

Your Responsibilities

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

Your Profile

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

Our Offer

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

Ready for a new challenge to advance your career? It´s just a click to apply online. We look forward to your application and your detailed resume. Your AT&S Team!

AT&S is an equal opportunity employer. We embrace diversity and are dedicated to empowering people to reach their potential by fostering their unique talents and strengths. The employment is in accordance with the Austrian Collective Agreement for the Electrical and Electronics Industry, employment group E-F, and we offer competitive salaries and additional benefits based on your performance, experience and qualification.

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