L2 Linux System Engineer - 3i Infotech - Turbe

Job Description L2 Linux Administrator

Position: L2 Linux Administrator
Experience: 7+ Years
Level: L2
Location: Mumbai- Turbhe
Employment Type: Full-time

Interview Round:- 1st round virtual

2nd round :- Face-to- face

Role Overview

We are looking for an experienced L2 Linux Administrator responsible for managing, monitoring, troubleshooting, and maintaining Linux server environments. The candidate should have strong hands-on experience in Linux administration, incident management, server troubleshooting, and system performance monitoring.

Key Responsibilities

• Perform L2 administration and troubleshooting of Linux servers.
• Manage Red Hat Enterprise Linux (RHEL), CentOS/Rocky Linux/Ubuntu environments.
• Troubleshoot server, OS, filesystem, boot, process, and performance-related issues.
• Manage user accounts, groups, permissions, sudo access, and SSH.
• Perform file system and storage management, including LVM, mounting, and disk utilization.
• Monitor CPU, memory, disk, processes, and overall server performance.
• Troubleshoot network-related issues such as connectivity, DNS, routing, ports, and services.
• Manage and troubleshoot Linux services using systemd/systemctl.
• Perform patching, package installation, upgrades, and security updates.
• Monitor and manage logs using tools such as journalctl, /var/log, and other monitoring solutions.
• Handle incidents, service requests, and change requests as per defined SLA.
• Perform server health checks and participate in backup and recovery activities.
• Troubleshoot application/server dependency issues and coordinate with application, database, network, and security teams.
• Create and maintain technical documentation, SOPs, and troubleshooting procedures.
• Participate in 24x7 rotational shifts/on-call support, if required.

Mandatory Technical Skills

• Strong hands-on experience in Linux Administration L2.
• Good knowledge of RHEL/Linux operating systems.
• Linux troubleshooting and performance monitoring.
• LVM, filesystem, NFS, SSH, FTP/SFTP.
• User, group, permissions, ACL and sudo administration.
• Package management using YUM/DNF/RPM/APT.
• Process and service management.
• Basic knowledge of TCP/IP, DNS, routing, ports and networking.
• Shell scripting basics.
• Log analysis and troubleshooting.
• Server patching and vulnerability remediation.
• Knowledge of ITIL, Incident, Problem and Change Management.

Good to Have

• Experience with VMware/virtualization.
• Knowledge of AWS/Azure cloud environments.
• Exposure to monitoring tools such as Nagios, Zabbix, SolarWinds, Dynatrace or similar.
• Knowledge of Ansible or other automation tools.
• Exposure to security hardening and CIS benchmarks.
• Knowledge of high availability/clustering concepts.