Manage and optimize Ubuntu and RHEL server infrastructure across production and staging. Perform upgrades, patching, kernel tuning, security hardening, backups, and troubleshooting. Implement configuration management and automation (Ansible/Puppet/Terraform), monitoring, virtualization/containerization, and collaborate with DevOps and cloud teams for provisioning, disaster recovery, capacity planning, and incident response. Maintain documentation, SOPs, and audit reports.
Job 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
- 8+ 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.
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