Key Responsibilities:

Linux Operations

• Provide L1/L2 support for Linux servers including RHEL, CentOS, Ubuntu and Amazon Linux.
• Troubleshoot CPU, memory, disk space, disk I/O, system load, network connectivity and service-related issues.
• Manage Linux users, groups, permissions, file systems and access.
• Monitor and manage services using systemd/systemctl.
• Perform filesystem and LVM administration, including monitoring capacity and supporting filesystem extensions.
• Troubleshoot networking issues involving DNS, TCP/IP, routing, ports, firewalls and SSH connectivity.
• Analyse system and application logs to identify errors and service failures.
• Manage cron jobs and scheduled operational tasks.
• Support package updates, patching, server reboots and routine maintenance activities.
• Perform approved production changes following change management procedures.

Monitoring and Incident Management

• Monitor infrastructure and application alerts using tools such as CloudWatch, Prometheus/Grafana or Datadog.
• Respond to alerts and incidents promptly and perform initial troubleshooting.
• Identify recurring or false-positive alerts and raise recommendations for alert tuning.
• Create, update and manage incidents through the appropriate ticketing system.
• Work on incidents based on priority, business impact and SLA.
• Escalate complex or critical issues to Shift Leads, L3 support, engineering or relevant resolver teams.
• Participate in major incident and bridge calls when required.
• Provide clear technical findings and regular updates during ongoing incidents.
• Ensure incidents are properly documented before resolution and closure.

Operational Checks

• Perform scheduled health checks for Linux servers and production services.
• Validate CPU, memory, filesystem, network and critical process/service status.
• Monitor backups, scheduled jobs and other operational activities where applicable.
• Perform pre-change and post-change validation.
• Carry out application and infrastructure connectivity checks following approved runbooks.
• Ensure outstanding alerts, incidents and operational risks are clearly communicated during shift handovers.

Scripting and Automation

• Write and maintain Bash scripts for routine administration and monitoring activities.
• Use Python where appropriate for operational automation.
• Identify repetitive manual tasks that can be automated.
• Support improvements to monitoring and operational scripts.
• Follow scripting, testing and change control standards before implementing automation in production.

Documentation and Knowledge Management

• Create and maintain operational runbooks, SOPs and troubleshooting guides.
• Document troubleshooting steps and resolutions for recurring incidents.
• Update knowledge base articles when new issues or solutions are identified.
• Ensure accurate documentation of incidents, changes and operational activities.
• Share technical knowledge with other Operations team members.

Shift Operations

• Work as part of a 24/7 rotational shift team, including nights, weekends and public holidays.
• Take ownership of assigned incidents, service requests, alerts and operational tasks.
• Follow structured shift handover procedures.
• Clearly communicate open issues, pending actions, planned changes and risks to the incoming shift.
• Escalate critical issues to the Shift Lead without unnecessary delay.
• Support priority incidents until resolution or successful handover.

Process and Compliance

• Follow ITIL practices for incident, problem and change management.
• Follow approved change procedures for production activities.
• Comply with security, access management and infrastructure standards.
• Ensure privileged access and administrative activities follow organisational policies.
• Participate in root cause analysis and post-incident reviews where required.
• Identify opportunities to improve system reliability and reduce operational workload.

Required Skills and Experience:

• 4+ years of experience in Linux administration, infrastructure operations, NOC or production support.
• Experience supporting systems in a 24/7 production environment.
• Strong hands-on Linux administration experience.
• Good knowledge of RHEL, CentOS, Ubuntu and/or Amazon Linux.
• Strong understanding of Linux command-line troubleshooting.
• Experience with Linux file systems and LVM.
• Good understanding of TCP/IP, DNS, SSH, routing, ports and firewall concepts.
• Experience managing systemd services, processes, users, groups and permissions.
• Strong log analysis and troubleshooting skills.
• Experience monitoring CPU, memory, disk, system load and network performance.
• Experience with monitoring tools such as CloudWatch, Nagios, Zabbix, Prometheus/Grafana or Datadog.
• Experience using ticketing/service management platforms such as ServiceNow or Jira Service Management.
• Working knowledge of ITIL incident, problem and change management.
• Bash scripting skills; Python scripting knowledge is desirable.
• Experience supporting patching, maintenance and production changes.
• Ability to troubleshoot incidents calmly and methodically under pressure.
• Good written and verbal communication skills.
• Ability to provide clear technical updates and shift handovers.
• Willingness to work rotational shifts, including nights, weekends and public holidays.

Desirable Skills

• AWS or other cloud infrastructure experience.
• Experience with VMware or Nutanix environments.
• Knowledge of Ansible or other configuration/automation tools.
• Familiarity with Git and source control.
• Basic database and SQL troubleshooting knowledge.
• Experience with backup and recovery operations.
• Understanding of high-availability and disaster recovery environments.
• Relevant Linux certification such as RHCSA/RHCE or equivalent.