L2/L3 Linux Operations Engineer

• Strong hands-on experience with Red Hat Enterprise Linux (RHEL) 7/8/9.
• Experience administering Red Hat Satellite for patching, provisioning, and lifecycle management.
• Hands-on experience with Red Hat Ansible Automation Platform including Playbooks, Roles, Inventories, Templates, Workflows, and Ansible Vault.
• Solid knowledge of Linux administration: LVM, XFS/ext4, systemd, SELinux, firewalld, SSH, DNS, NFS, and package management (YUM/DNF).
• Experience with monitoring tools such as SCOM and Netmon.
• Familiarity with virtualization (VMware/KVM) and basic cloud concepts (AWS/Azure) is desirable.
• Experience with ITSM tools like ServiceNow and understanding of ITIL processes.
• Bachelor's or Master's degree in Computer Science, Information Technology, or related field.
• Experience supporting enterprise production environments.
• Strong troubleshooting and analytical skills.
• Automation-first mindset with a focus on operational excellence.
• Excellent communication and documentation skills.

Nice to have:

• RHCSA / RHCE certifications.
• Red Hat Certified Specialist in Ansible Automation.
• Red Hat Certified Specialist in Deployment and Systems Management.
• ITIL Foundation certificate.
• Knowledge of DNS, IIS, and VMware.

• Provide L2 operational support for RHEL 7/8/9 servers across Production, UAT, DR, and Development environments.
• Troubleshoot OS, application, performance, storage, and network-related issues while meeting SLA commitments.
• Perform user, filesystem, LVM, service, package, and security administration.
• Execute OS patching, vulnerability remediation, and lifecycle management using Red Hat Satellite.
• Manage Satellite components including Content Views, Lifecycle Environments, Activation Keys, Host Collections, Repository Synchronization, Remote Execution, and Subscription Management.
• Develop and maintain Ansible Playbooks, Roles, Templates, and Job Templates to automate routine operational tasks such as patching, configuration management, user provisioning, and compliance checks.
• Troubleshoot and optimize Ansible automation workflows and maintain automation code in Git.
• Monitor system health, investigate alerts, perform root cause analysis, and implement preventive measures.
• Create and maintain technical documentation, SOPs, and knowledge base articles.
• Collaborate with L3 engineers, application teams, and infrastructure teams during incident, change, and problem management activities.

This position requires a hybrid working model, with attendance at the Warsaw Hub for 1–2 days per week.