Senior Red Hat Linux Administrator

Infra Tech Support Practitioner

Project Role : Infra Tech Support Practitioner
Project Role Description : Provide L1–L2 technical support for infrastructure, systems, and applications in production and development environments, both remotely and onsite, following defined operating models and processes. Act as the primary interface with users/clients to accurately diagnose issues and deliver effective resolutions across infrastructure, operating systems, networks, and application platforms, ensuring service stability and quality support.
Must have skills : Linux Architecture
Good to have skills : Linux Operations
Minimum 5 year(s) of experience is required
Educational Qualification : 15 years full time education

Summary:
We are looking for a highly experienced Senior Red Hat Linux Administrator to manage and optimize our enterprise Linux infrastructure. The role involves designing, implementing, and maintaining highly available, secure, and scalable Red Hat environments while driving automation, performance tuning, and system reliability across on-prem and cloud platforms.

Roles & Responsibilities:
* Install, configure, and maintain Red Hat Enterprise Linux (RHEL) systems across environments
* Design and manage highly available and resilient Linux infrastructure
* Perform advanced system administration including kernel tuning, patching, and upgrades
* Automate system provisioning, configuration, and deployment using tools like Ansible
* Monitor system performance, troubleshoot issues, and ensure optimal uptime
* Implement and enforce system security (SELinux, firewalls, access control, hardening)
* Manage storage (LVM, NFS, SAN) and file systems
* Administer user access, authentication (LDAP/AD integration), and identity management
* Work with DevOps and cloud teams on hybrid/cloud infrastructure (AWS, Azure, GCP)
* Maintain backup and disaster recovery processes
* Ensure compliance with security standards (ISO, SOC2, CIS benchmarks)
* Create and maintain documentation, SOPs, and system architecture diagrams
* Mentor junior administrators and provide technical leadership

Professional & Technical Skills:
* Bachelor s degree in Computer Science, IT, or related field
* 8+ years of hands-on experience in Linux system administration
* Strong expertise in Red Hat Enterprise Linux (RHEL 7/8/9)
*Deep knowledge of:
- Linux internals (process management, memory, file systems)
- Shell scripting (Bash) and automation
- System performance tuning and troubleshooting
* Experience with:
- Configuration management tools (Ansible preferred)
- Monitoring tools (Nagios, Zabbix, Prometheus, Grafana)
* Virtualization (VMware/KVM)
- Strong knowledge of networking fundamentals (TCP/IP, DNS, NTP, SSH) *OS hardening *Patch management and vulnerability remediation *SSH hardening and access control
Preferred Certifications (Optional)
* Red Hat Certified Engineer (RHCE)
* Red Hat Certified System Administrator (RHCSA)
* Red Hat Certified Architect (RHCA) (highly desirable)

Additional Information:
- The candidate should have minimum 5 years of experience in Linux Architecture.
- This position is based at our Chennai office.
- A 15 years full time education is required.