Linux Systems Administrator (Ubuntu / Red Hat)

Location: Remote / India (Preferred: IST overlap with U.S. hours)
Employment Type:  Contract part time (4 Hour/Day)
Experience Required: 10+ years (Senior Level)
Department: Infrastructure & Cloud Operations
Reports To: Infrastructure Lead / DevOps Manager

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.

• 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.

• 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.

• 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.

• 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.