### **Job Title:** **Senior Linux Systems Administrator (Ubuntu / Red Hat)** **Location:** Remote (Preferred: IST) **Employment Type:** Contract part time (4 IST Hour/Day ) **Experience Required:** 10\+ years (Senior Level) **Department:** Infrastructure \& Cloud Operations **Reports To:** Infrastructure Lead / DevOps Manager ### **Position Overview** We are seeking a **Senior Linux Systems Administrator** experienced in **Ubuntu and Red Hat Enterprise Linux (RHEL)** environments. The role involves managing and optimizing large\-scale Linux server infrastructure across production and development environments, ensuring uptime, reliability, and security. This position will closely collaborate with DevOps, Network, and Software teams to support mission\-critical systems, implement automation, and streamline infrastructure management processes. ### **Key Responsibilities** * Manage, monitor, and maintain **Ubuntu and Red Hat Linux** servers (production and staging). * Perform system upgrades, kernel updates, patch management, and performance tuning. * Implement and manage **user access, security policies, and backup/recovery strategies**. * Troubleshoot and resolve hardware, OS, and network\-related issues. * Maintain configuration management and deployment pipelines using **Ansible, Puppet, or similar tools**. * Monitor system health and resource utilization; ensure optimal uptime and performance. * Collaborate with DevOps and Cloud teams for environment provisioning (AWS, Azure, or on\-prem). * Manage **server hardening, SSH configuration, SSL certificates**, and OS\-level security compliance. * Participate in capacity planning, disaster recovery, and incident response activities. * Create and maintain detailed system documentation, SOPs, and audit reports. ### **Required Skills \& Experience** * 5\+ years of hands\-on experience in **Linux system administration (Ubuntu \& Red Hat)**. * Strong command of **Bash scripting** and automation tools (e.g., Ansible, Terraform, Shell, or Python basics). * Experience with **monitoring tools** such as Nagios, Zabbix, or Prometheus. * Solid understanding of **networking fundamentals (DNS, DHCP, NFS, SSH, firewalls)**. * Experience with **virtualization and containerization technologies (VMware, KVM, Docker, etc.)**. * Strong troubleshooting skills with system logs, kernel issues, and service failures. * Familiarity with **version control (Git)** and **CI/CD pipeline environments**. * Exposure to **cloud platforms** (AWS, GCP, Azure) is an added advantage. * Excellent documentation and communication skills; ability to support global teams. ### **Preferred Qualifications** * Red Hat Certified System Administrator (**RHCSA**) or Engineer (**RHCE**) certification. * Experience managing **high\-availability clusters**, load balancing, and RAID management. * Previous experience in **enterprise\-scale infrastructure environments** or tech product companies. ### **Soft Skills** * Strong ownership and accountability mindset. * Detail\-oriented with a proactive approach to issue prevention. * Excellent communication and coordination with cross\-functional teams. * Ability to handle pressure and maintain SLAs in critical environments.