Linux System Administrator

O2 Breathing Brains; Mumbai; On-site; INR 1,200,000 - 2,200,000; Full time

Job summary

O2 Breathing Brains in Mumbai is seeking an experienced Linux System Administrator to manage production, development, and infrastructure environments. You will install, configure, and maintain RHEL/Linux servers, develop shell scripts, and ensure security and high availability.

You will monitor systems with Prometheus and Grafana, perform patching and vulnerability remediation, manage backups and DR drills, and collaborate with Application, Database, Network, and Security teams to resolve issues.

Qualifications

• Minimum 2 years hands-on Linux administration experience
• Experience with RHEL/Linux administration
• Shell scripting
• System monitoring
• Patching
• Security
• Troubleshooting
• Production support
• MySQL administration
• Prometheus
• Grafana
• rsync/lsyncd
• Disaster Recovery

Responsibilities

• Administer and support RHEL/Linux production, development, and infrastructure servers.
• Monitor Linux infrastructure using Prometheus and Grafana for health and availability.
• Perform Linux OS installation, configuration, patching, hardening, and vulnerability remediation.
• Conduct configuration audits and vulnerability assessments for security/compliance.
• Manage Linux users, groups, access controls, file permissions, and system security.
• Develop and maintain Shell scripts to automate admin, monitoring, and tasks.
• Troubleshoot and resolve critical Linux/system-level production incidents.
• Install and configure applications using RPM packages.
• Configure and manage file synchronization with rsync/lsyncd.
• Perform backup, restoration, and Disaster Recovery drills.
• Support high-availability and operational stability of infrastructure.
• Collaborate with Application, Database, Network, and Security teams to resolve issues.
• Coordinate with cross-functional teams to identify and resolve system issues.
• Communicate with clients and stakeholders regarding issues, impact, and resolutions.

Job description

We are looking for an experienced Linux System Administrator with a minimum of 2 years of hands-on Linux Administration experience to manage and support production, development, and infrastructure environments.

The candidate should have strong expertise in RHEL/Linux administration, Shell scripting, system monitoring, patching, security, troubleshooting, and production support. Experience with MySQL administration, Prometheus, Grafana, rsync/lsyncd, and Disaster Recovery activities will be an added advantage.

Key Responsibilities

• Administer and support RHEL/Linux production, development, and infrastructure servers.
• Monitor Linux infrastructure using Prometheus and Grafana, ensuring system health, availability, and proactive issue detection.
• Perform Linux OS installation, configuration, patching, hardening, and vulnerability remediation.
• Conduct configuration audits and vulnerability assessments to maintain security and compliance.
• Manage Linux users, groups, access controls, file permissions, and system security.
• Develop and maintain Shell scripts to automate system administration, monitoring, and operational tasks.
• Troubleshoot and resolve critical Linux/system-level production incidents.
• Install and configure applications and utilities using RPM packages.
• Configure and manage file synchronization and replication using rsync and lsyncd.
• Perform backup, restoration, and Disaster Recovery (DR) drills.
• Support high-availability and operational stability of infrastructure environments.
• Work closely with Application, Database, Network, and Security teams to resolve infrastructure issues.
• Coordinate with cross-functional teams to identify, prioritize, and resolve system issues.
• Communicate effectively with clients and stakeholders regarding technical issues, impact, and resolutions.
• Provide critical production support and participate in incident/problem management activities.