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) Strong/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 Solid 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 (Tamil Nadu)
🏢 Tata Communications
📍 Tamil Nadu