Linux System Administrator III

Job Title: System Administrator (Linux)

Job Location: Vikhroli (WFO)

Shift: Rotational (supporting 24/7 ops)

Job Description:

As a System Administrator III Linux, you will be responsible for installing, configuring, maintaining, and supporting Linux/Unix servers, networks, and applications. You will ensure the systems are secure, reliable, and efficient, and play a key role in troubleshooting and resolving issues to maintain optimal system performance.

Key Responsibilities:

• System Installation and Maintenance: Install, configure, and maintain Linux RHEL (9x, 8x, 7x, 6x) and OL (6x, 7x, 8x, 9x) operating systems.
• Performance Monitoring and Troubleshooting: Monitor system performance, detect, diagnose, and resolve issues related to servers, hardware, applications, and software.
• Routine Administration: Perform user management, file system management, backup/restore operations, and administer disk, volume groups, LVM, NFS, and automount.
• System Upgrades and Patching: Implement system upgrades, patches, and handle post-patching issues, following best practices and change management procedures.
• Security and Vulnerability Management: Remediate vulnerabilities, manage firewalls (IPTABLES), and configure KDUMP for crash/kernel dump analysis.
• Networking: Manage IP networking, static routing, and protocols such as FTP, SSH, SMTP, DNS, HTTP/S, DHCP, and Syslog logging.
• Automation and Configuration Management: Use tools like Puppet, Ansible, or equivalent for automation and configuration management.
• Monitoring and Documentation: Utilize SNMP-based monitoring, document system configurations, procedures, and troubleshooting steps.
• Virtualization and Storage: Manage VMWare vSphere, NAS configuration, SAN and NAS storage, and multipathing.
• Incident and Problem Management: Participate in on-call rotations, respond to system emergencies, and provide RCAs on P1 tickets.
• Collaboration and Vendor Coordination: Work with other IT teams to resolve cross-functional issues, ensure seamless integration with other systems, and coordinate with hardware vendors (HP ProLiant, Dell PowerEdge).
• Email Administration: Troubleshoot mail issues (mailx, sendmail) and manage client-side LDAP configurations.

Qualifications:

• Education: Bachelors degree in computer science / information technology / or equivalent stream.
• Certifications: Relevant certifications such as CompTIA Linux+, Red Hat Certified System Administrator (RHCSA), or LPIC-1 are required.

Requirements:

• Experience: 5 years of proven experience as a System Administrator in a similar role.
• Technical Skills: Strong understanding of Unix/Linux operating systems, scripting, and associated technologies.
• Additional Skills: Strong problem-solving skills, experience with performance tuning, and optimizing server configurations.

Work Environment:

• This is a full-time position.
• Candidates must work 5 days a week from the office.
• Candidates should be ready to work in shifts. This team supports 24X7 on a rotating schedule.