Linux & Kubernetes Administrator

Larsen & Toubro; Mumbai; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Larsen & Toubro in Mumbai, India seeks an experienced Linux & Kubernetes Administrator to manage enterprise Linux platforms, containerized environments, and cloud-native workloads across hybrid infrastructure. The role emphasizes high availability, security, automation, and scalable operations.

You will administer RHEL, Ubuntu, and SUSE, deploy Kubernetes/OpenShift, implement IaC with Terraform and Ansible, and drive SRE practices, monitoring, and compliance across ISO27001, PCI-DSS, and

Job description

Job Purpose

The Linux & Kubernetes Administrator is responsible for the administration, maintenance, optimization, automation, and security of enterprise Linux platforms and containerized environments supporting mission-critical business applications. The role focuses on ensuring high availability, scalability, operational efficiency, and security compliance across cloud, on-premises and hybrid infrastructure environments leveraging Linux, Kubernetes, Docker, OpenShift, and cloud-native technologies

Roles & Responsibilities

Linux Infrastructure Administration

• Install, configure, administer, and support Red Hat Enterprise Linux (RHEL), Ubuntu, SUSE Linux, and other enterprise Linux distributions.
• Manage system lifecycle activities, including provisioning, patching, upgrades, hardening, and decommissioning.
• Monitor system health, availability, resource utilization, and performance metrics.
• Manage user administration, access controls, and privilege management.

Container Platform Administration

• Deploy, administer, and support container platforms including Kubernetes, OpenShift, Docker Enterprise, Rancher, and container runtime environments.
• Manage Kubernetes clusters across development, testing, and production environments.
• Configure and maintain Namespaces, Pods, StatefulSets, Deployments, Services, Ingress Controllers, and Persistent Volumes.
• Ensure container platform availability, scalability, and performance.

Cloud-Native Platform Management

• Support hybrid and multi-cloud containerized workloads running on L & T Vyoma, private cloud & Sovereign cloud environments.
• Implement cloud-native operational best practices for containerized applications.
• Manage container registries, image repositories, and artifact management solutions.
• Support microservices-based application deployments.
• Support AI/ML, GPU, and high-performance computing infrastructure.
• Support GPU/ AI environment

Platform Reliability & Performance Management

• Identify and resolve Linux and container platform performance issues.
• Conduct root cause analysis (RCA) for production incidents.
• Perform proactive health checks, capacity planning, and resource optimization.
• Implement monitoring and alerting for infrastructure and container workloads.

Security & Compliance

• Implement Linux OS hardening as per CIS, STIG, and organizational standards.
• Manage vulnerability remediation and security patching.
• Configure security policies for Kubernetes and OpenShift environments.
• Implement container image scanning, compliance monitoring, and runtime protection.
• Ensure compliance with ISO 27001, PCI-DSS, SOC2, and organizational governance requirements.

Automation & DevOps Enablement

• Develop automation scripts using Shell Scripting, Python, Ansible, and PowerShell where applicable.
• Implement Infrastructure as Code (IaC) using Terraform, Ansible, and GitOps methodologies.
• Support CI/CD pipelines integrated with Kubernetes and container platforms.
• Drive operational automation and service reliability improvements.

Backup, Recovery & Business Continuity

• Implement backup and recovery procedures for Linux and containerized platforms.
• Support disaster recovery planning and testing.
• Ensure platform resilience and adherence to RPO/RTO commitments.
• Participate in business continuity and disaster recovery exercises.

Monitoring & Observability

• Administer enterprise monitoring solutions such as Prometheus, Grafana, ELK, Splunk, Dynatrace, AppDynamics, and Zabbix.
• Configure dashboards, alerts, and operational reporting.
• Analyze trends and recommend performance improvements.
• Support observability initiatives across cloud-native platforms.

Stakeholder & Service Management

• Participate in Incident, Problem, Change, and Release Management activities.
• Collaborate with Application, DevOps, Cloud Engineering, Security, and Infrastructure teams.
• Support audits, compliance reviews, and customer governance meetings.
• Mentor junior administrators and provide technical leadership.

Experience & Educational Requirement

BE/B-Tech or equivalent with Computer Science or Electronics & Communication

Relevant Experience

• Minimum 8-12 years of experience in Linux System Administration.
• Minimum 5+ years of hands-on experience supporting Kubernetes/OpenShift platforms in production environments.
• Experience managing large-scale enterprise and cloud-native environments.
• Strong exposure to container orchestration technologies.
• Experience supporting mission-critical 24x7 managed services operations.
• Experience in DevOps, CI/CD, Infrastructure as Code, and automation frameworks.
• Understanding of SRE principles and platform reliability engineering practices.
• Scripting knowledge in Python, Bash, or PowerShell.