1 Year Contract role Role: Kubernetes Manager Level: L3 / Senior Kubernetes Administration & Operations Primary Focus: Linux Administration, Kubernetes Administration, Production Operations, SRE, Monitoring, Security, Upgrades and Customer Escalation Mandatory Skills - CKA certification (Preferred) - Robust/deep knowledge of Linux administration and troubleshooting - Strong hands-on experience in Kubernetes administration and L3 troubleshooting - Knowledge on virtualization like vSphere, OpenStack, Ovirt , KVM - Production experience in Kubernetes cluster operations, incident management and troubleshooting - Strong knowledge of Kubernetes architecture, control plane, worker nodes, networking, storage and workloads - Ability to handle P1/P2/P3 incidents and customer escalations within SLA - Hands-on experience with Kubernetes upgrades, patching and maintenance - Strong understanding of container runtime technologies: - containerd - CRI-O - Docker - CRI - Experience with container registries, preferably Harbor Monitoring & Observability - Configure and administer Prometheus - Configure and manage Alert manager - Grafana dashboard creation and monitoring - Kubernetes cluster health monitoring - Alert investigation and resolution within SLA - Alert tuning and noise reduction - Identify duplicate/repeated alerts and optimize alert rules - Experience with ELK/EFK and Fluentd - Log collection, analysis and troubleshooting CI/CD & DevOps Hands-on experience with: - Jenkins - GitLab CI/CD - Git - Container image build and deployment - Kubernetes deployment automation - CI/CD troubleshooting Kubernetes Operations Responsible for: - Day-to-day Kubernetes cluster administration - L3 troubleshooting of Kubernetes issues - Kubernetes upgrade and patching activities - Cluster health checks - Node and pod troubleshooting - Control-plane and worker-node troubleshooting - Kubernetes networking troubleshooting - Kubernetes storage troubleshooting - Resource and performance analysis - Incident/problem management - Root Cause Analysis (RCA)



- Vulnerability remediation - Production change implementation - Customer-specific Kubernetes requirements Security & Vulnerability Management - Kubernetes security best practices - Vulnerability identification and remediation - Container image vulnerability management - Registry security - Kubernetes RBAC - Network/security policy concepts - SSL/TLS certificate management - Experience with security tools such as Gatekeeper - Ability to coordinate vulnerability fixes across OS, Kubernetes and container layers Networking Strong understanding of: - DNS - TCP/IP and L3 networking - Load Balancers - SSL/TLS termination - Ingress - Kubernetes Services - Network troubleshooting - Ingress Controllers - Istio Gateway - Service Mesh concepts - NGINX - Kong API Gateway Storage Good understanding of Kubernetes storage and underlying infrastructure: - NFS / File storage - Block storage - Object storage - PV/PVC - Storage Class - CSI - Storage troubleshooting - Mount and I/O issues - Storage performance concepts Platform Components Working knowledge of: Component Required Knowledge Istio Service Mesh, Gateway, traffic management NGINX Ingress / reverse proxy Kong API Gateway Redis Cache / datastore PostgreSQL Database fundamentals & troubleshooting Kafka Messaging / event streaming RabbitMQ Message broker Keycloak IAM / authentication Gatekeeper Kubernetes policy enforcement Harbor Container registry Prometheus Monitoring Grafana Visualization Alertmanager Alert management ELK Centralized logging Fluentd Log collection Customer & Operations Responsibilities - Provide 24×7/on-call customer support as required - Handle customer escalations at OS and Kubernetes levels - Understand and resolve customer production issues - Participate in incident bridges and technical discussions - Perform RCA for critical incidents - Track and resolve tickets within defined SLA - Handle day-to-day customer requirements - Coordinate with development, compute, network, storage, security and application teams - Ensure production changes follow the approved change-management process - Prepare technical documentation and operational procedures

📌 Manager (Chennai)
🏢 Tata Communications
📍 Chennai