Description

 Key Responsibilities
•    Server Administration: Perform daily administration of Linux distributions (RHEL, CentOS, Ubuntu). Manage system uptime, process monitoring, and general OS troubleshooting to ensure 24/7 service availability.
•    Boot Prom & Bootloader Management: Manage and troubleshoot boot-level configurations including GRUB, UEFI, and OpenBoot PROM. Resolve issues related to kernel parameters and system initialization.
•    User Administration: Handle centralized and local user account management. Configure sudoers policies, SSH keys, and ensure compliance with identity and access management (IAM) standards.
•    OS Package Administration: Manage software lifecycles using package managers (YUM, DNF, APT, RPM). Maintain local repositories, handle dependency resolution, and execute OS patching.
•    Hardware Maintenance: Monitor physical server health (CPU, Memory, Power Supplies) via IPMI, iLO, or DRAC. Coordinate with vendors for hardware replacements and firmware upgrades.
•    Jump Server Setup & Security: Design, implement, and maintain secure Jump Servers (Bastion Hosts) to provide controlled access to the internal server environment.
•    NFS Management: Configure and troubleshoot Network File System (NFS) exports and mounts. Manage permissions, quotas, and performance tuning for shared storage.
•    Sendmail Management: Administer Sendmail services, including configuration of mail relays, aliases, and troubleshooting mail queues and delivery issues.
•    DNS Administration: Manage DNS services (BIND/Named). Maintain forward and reverse lookup zones, record management (A, CNAME, MX, PTR), and ensure name resolution stability.

Technical Skills & Requirements
•    Linux Expertise: Deep knowledge of Linux internals, file system hierarchy, and shell environments (Bash).
•    Network Services: Hands-on experience configuring BIND (DNS) and Sendmail (MTA) in an enterprise environment.
•    Storage Protocols: Proficiency in NFS configuration and troubleshooting network-based file sharing.
•    Hardware Knowledge: Experience with enterprise server hardware (Dell, HPE, or IBM) and remote management consoles.
•    Security: Strong understanding of SSH tunneling, firewall management (IPTables/Firewalld), and secure access protocols.
Qualifications
•    Education: Bachelor’s degree in Computer Science, Information Technology, or equivalent work experience.
•    Experience: 3–5 years of experience in Linux-based operational support.
•    Certifications (Preferred): 
o    Red Hat Certified System Administrator (RHCSA).
o    CompTIA Linux+.
o    Linux Professional Institute Certification (LPIC-1 or LPIC-2).
Soft Skills
•    Strong diagnostic skills for resolving complex boot and connectivity issues.
•    Ability to document technical configurations and maintain operational runbooks.
•    Proactive approach to hardware monitoring and preventive maintenance.
•    Excellent communication skills for coordinating with network and security teams

Key Skills

Education

Bachelor's degree