Sr Administrator (Support & Operations)

Chennai, Tamil Nadu

Job Summary
Install, configure, and maintain Nagios Core / Nagios XI monitoring systems.
Monitor infrastructure, applications, servers, and network devices.
Configure hosts, services, plugins, and custom checks.
Develop and manage alerting and notification mechanisms.
Create dashboards and reports for system health monitoring.
Integrate Nagios with third-party tools and scripts.
Develop custom plugins using Bash, Python, or Perl.
Perform root cause analysis for detected issues.
Ensure high availability and performance of monitoring systems.
Automate monitoring configurations and maintenance tasks.
Upgrade and patch Nagios settings.

Key Responsibilities
Monitoring Tools: Nagios Core, Nagios XI
Plugins: NRPE, NCPA, custom plugin development
Protocols: SNMP, SSH, HTTP, ICMP
Scripting: Bash, Python, Perl
OS Platforms:



Linux/Unix, Windows monitoring
Network Monitoring: Routers, switches, firewalls
Alerting Systems: Email, SMS, PagerDuty integration
Visualization: Nagios dashboards, Grafana integration

Skill Requirements
10+years of IT experience with 3+ years in Nagios
Hands-on experience with Nagios installation, configuration, and tuning
Developed custom plugins for advanced monitoring use cases
Managed enterprise monitoring of infrastructure and applications
Experience with SNMP-based device monitoring
Implemented alerting strategies and escalation workflows
Improved system uptime through proactive monitoring
Experience integrating Nagios with automation and ITSM tools

Other Requirements

📌 Sr Administrator Support & Operations Chennai
🏢 HCLTech
📍 Chennai