Unix Linux Administrator

5 days ago

Chennai, India Tata Consultancy Services Full time
Job Role: Unix Linux Administrator
Job Location: Chennai
Exp Range: 5Years to 8Years
Required technical skills: AIX, HP-UX, Linux, Redhat
Desired Competencies (Technical/Behavioral Competency):
System Administration: Install, configure, and manage Unix-based operating systems, including RHEL Linux, AIX, HP-UX.
Server Management: Monitor and maintain physical and virtual servers, ensuring optimal performance and uptime.
User Management: Manage user accounts, permissions, and authentication methods (LDAP, NIS, PAM).
Shell Scripting & Automation: Develop and maintain shell scripts (Bash, Perl, Python) for automation tasks like system monitoring, backups, and configuration management.
System Performance Tuning: Monitor system performance, identify bottlenecks, and implement optimizations to improve system efficiency.
Security Management: Apply patches, upgrades, and configure firewalls. Implement security best practices, ensuring systems are protected against vulnerabilities.
Backup & Recovery: Ensure system backups are performed regularly and that recovery procedures are in place and tested.
Troubleshooting: Diagnose and resolve hardware and software issues. Provide support for application and infrastructure teams.
Networking: Understand and manage networking concepts like TCP/IP, DNS, DHCP, VPN, NFS, and SAN/NAS storage solutions.
Incident & Problem Management: Provide support for critical issues (Level 3 escalation). Perform root cause analysis for system outages and incidents.
Documentation: Create and maintain documentation related to system configurations, procedures, and policies.
Collaboration: Work closely with development, application, and infrastructure teams to provide Unix system support and collaborate on IT projects.
In-depth knowledge of Unix-based operating systems (Linux, AIX, Solaris, etc.).
Proficiency in shell scripting (Bash, Perl, Python).
Experience with system monitoring tools (Nagios, Zabbix, etc.) and automation tools (Ansible, Puppet, Chef).
Familiarity with virtualization platforms (VMware, KVM, etc.).
Solid understanding of networking principles (TCP/IP, DNS, DHCP, VLANs, firewalls).
Strong troubleshooting and problem-solving skills.
Experience with storage management (NFS, SAN, NAS).
Knowledge of cloud platforms (AWS, GCP, Azure) is a plus.
Excellent communication and documentation skills.
Ability to work independently and as part of a team.
Good to have skills:
Good understanding of Incident, Asset, Problem and Change Management (ITIL Process)

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