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 (Chennai)
🏢 Tata Communications
📍 Chennai