UNIX / Linux L3 Engineer

Key Responsibilities

Infrastructure Build & Implementation

Install, configure, and harden UNIX/Linux servers .

Build and configure Development, Test, UAT, and Production environments.

Configure server storage, networking, security, and system services .

Project & L3 Support

Provide L3 infrastructure support and resolve complex server issues.

Collaborate with application, database, network, cloud, and security teams.

Support infrastructure planning, design reviews, deployments, and cutover activities.

Ensure infrastructure readiness for application onboarding and releases.

Automation

Develop Shell and Python scripts for server provisioning and operational automation.

Implement configuration management and Infrastructure-as-Code (IaC) practices.

Standardise server builds and deployment procedures.

Security & Compliance

Implement OS hardening and security best practices .

Perform patching and vulnerability remediation.

Ensure compliance with organisational and regulatory security standards.

Documentation

Create and maintain Technical Design Documents (TDDs), SOPs, build documents, runbooks, and knowledge articles .

Provide knowledge transfer to operations and support teams.

Must-Have Skills

Strong Linux Administration , particularly RHEL / Oracle Linux .

Strong experience in UNIX/Linux server build, configuration, and security hardening .

Strong Shell Scripting and Python automation skills.

Experience with High Availability and Clustering , preferably Veritas Cluster / VCS FSS .

Experience with Storage: SAN/NAS and LVM .

Strong troubleshooting and L3 support experience.

Good to Have

Experience with AWS, Azure, and VMware .

Infrastructure-as-Code and configuration management experience.

IBM MQ experience.

Disaster Recovery and capacity/performance management experience.

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