Senior Linux Administrator

Senior Linux Administrator

Job Summary

We are seeking a highly skilled Senior Linux Administrator with extensive experience in managing, optimizing, and supporting large-scale Linux environments across on-premises and cloud platforms. The ideal candidate will have strong expertise in AWS and GCP, demonstrate ownership in handling P1/critical incidents, and ensure high system reliability, performance, and security. This role requires a proactive mindset, deep troubleshooting skills, and the ability to operate effectively in high-pressure production environments.

Key Responsibilities

• Manage, administer, and maintain Linux servers (RHEL, CentOS, Ubuntu) ensuring high availability, performance, and stability.
• Operate and support Linux environments hosted on AWS and GCP, including compute, storage, and networking components.
• Handle P1 / critical production incidents, providing rapid diagnosis, resolution, and root cause analysis (RCA).
• Implement, monitor, and enforce system security controls to safeguard infrastructure and sensitive data.
• Troubleshoot and resolve complex hardware, OS, application, and performance-related issues within defined SLAs.
• Automate routine administrative tasks using shell scripting (Bash, Python) and automation frameworks.
• Work closely with application and DevOps teams to support deployments, performance tuning, and production releases.
• Perform regular system health checks, audits, and capacity planning to optimize resource utilization.
• Maintain clear documentation of configurations, incident reports, SOPs, and recovery procedures.
• Participate in on-call support and shift handovers, ensuring seamless operational continuity.
• Mentor junior administrators and provide technical guidance when required.

Mandatory Skills

• Strong hands-on expertise in Linux system administration (RHEL, CentOS, Ubuntu).
• Proven experience supporting Linux systems in AWS and GCP cloud environments.
• Ability to independently handle P1 / Sev-1 incidents in production environments.
• Proficiency in shell scripting and automation tools.
• Experience with system monitoring, alerting, and performance tuning tools.
• Strong understanding of networking concepts (TCP/IP, DNS, routing, firewalls).
• Experience with virtualization technologies (VMware, KVM).
• Knowledge of configuration management tools (Ansible, Puppet, or similar).
• Excellent troubleshooting skills and the ability to work under pressure.

Preferred Skills

• Experience with containerization technologies (Docker, Kubernetes).
• Familiarity with DevOps practices and CI/CD pipelines.
• Knowledge of database platforms (MySQL, PostgreSQL).
• Exposure to hybrid and multi-cloud architectures.
• Linux certifications such as RHCE, CompTIA Linux+ are an added advantage.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline.
• 8–10 years of hands-on experience in Linux system administration.
• Demonstrated experience managing large-scale, business-critical Linux environments.
• Strong communication, documentation, and stakeholder coordination skills.
• Ability to work independently as well as collaboratively within cross-functional teams.

Key skills/competency

• Linux System Administration
• AWS
• GCP
• Incident Management
• Shell Scripting
• Automation
• System Security
• Performance Tuning
• Troubleshooting
• DevOps