Job Summary

Job Description: L3 Linux Administrator

Job Title:

L3 Linux Support Engineer / Senior Linux Administrator

Experience:

6–10+ Years

Role Overview

Acts as third-level support responsible for resolving critical issues, providing expert troubleshooting, and driving system improvements while ensuring high availability and performance.

Key Responsibilities

Key Responsibilities

- Lead troubleshooting for critical production incidents (P1 & P2)

- Perform deep root cause analysis and implement fixes

- Design and optimize Linux system architecture

- Handle kernel tuning and performance optimization

- Manage filesystem and LVM issues

- Troubleshoot boot failures and kernel panic

- Manage authentication systems (SSSD, LDAP, AD, Kerberos)





- Perform capacity planning and performance tuning

- Lead OS upgrades and patching strategies

- Implement automation (Bash, Python, Ansible)

- Ensure system security and compliance

- Troubleshoot networking issues (DNS, NFS, CIFS)

- Lead major incident calls

- Mentor L1 and L2 engineers

- Create SOPs and documentation

- Support change management processes

Skill Requirements

Expert Linux knowledge, system design, troubleshooting, performance tuning, networking, authentication, and automation scripting.

Must Have Skill

Linux

Valuable to Have Skill

Other Requirements

📌 Track Lead (Support & Operations) (India)
🏢 HCLTech
📍 India