Unix/Linux Support Analyst (L2)

Founded in 1999 in Vienna, the Qualysoft Group is a manufacturer-independent IT consulting and services company, which successfully provides support for its international customers with the aim of boosting their competitiveness and economic efficiency through innovative IT solutions.

Its focus is on financial services providers, telecommunications companies, the automotive industry and energy service providers. Over 400 employees in 6 subsidiaries work together to ensure state of the art solutions for our clients.

We are looking for new colleagues in Qualysoft teams for diverse projects providing continuous learning opportunities. Our common goal is to provide honesty, development and a stable background while getting to know the latest technologies. We are waiting for your application for the position below!

Build, configure, and maintain Linux and AIX servers;

Apply OS updates, patches, and security hardening baselines;

Monitor system health (CPU, memory, I/O, filesystem) and respond to alerts;

Perform patching and kernel updates within maintenance windows;

Troubleshoot authentication issues (SSSD, PAM, LDAP, Kerberos) and sudo policies;

Manage backup solutions and perform regular restore testing;

Track end-of-life systems/packages and plan upgrades or migrations;

Manage SSH keys, certificates, and secure configurations;

Diagnose and resolve performance issues (load, IOPS, network, memory);

Maintain documentation (runbooks, CMDB, asset data);

Coordinate with network and storage teams (bonding, VLANs, multipath);

Tune monitoring systems to reduce alert noise;

Support application teams with dependencies and package management;

Enforce security policies (file permissions, SELinux/AppArmor);

Participate in disaster recovery exercises and validation;

Provide operational KPIs and reporting.

Strong experience with Linux (RHEL, Oracle Linux) and/or AIX administration;

Knowledge of system components (systemd, LVM, filesystems);

Shell scripting skills for automation and troubleshooting;

Experience with authentication systems (LDAP, Kerberos, SSSD);

Familiarity with backup and restore tools;

Understanding of AIX LPAR restore (RootVG and filesystem backups) is a plus;

Basic networking and storage knowledge (bonding, VLANs, multipath);

Experience with monitoring tools and performance tuning;

Familiarity with endpoint security tools on Linux;

Strong analytical and problem-solving skills;

Good documentation and communication abilities.