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 environments.

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