Qualifications and Experience:

7-10+ years of experience in Linux server administration, specifically with Red Hat Linux and Ubuntu Server.
Expertise in system performance tuning, troubleshooting, and capacity planning.
Strong understanding of Linux networking, including TCP/IP, DNS, DHCP, and firewall configurations.
Experience with configuration management tools like Ansible, Puppet, or Chef.
Familiarity with containerization and orchestration tools such as Docker and Kubernetes is a plus.
Proficiency in storage management, including LVM and RAID configurations.
Preferred Certifications:

Red Hat Certified Engineer RHCE or Red Hat Certified System Administrator RHCSA.
Ubuntu Certified Professional UCP or equivalent.
Additional Skills:

Strong analytical and problem solving skills.
Excellent communication and documentation abilities.
Experience working in an ITIL or Agile environment is a plus.