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 v Sphere, Open Stack, 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

Solid 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 &

- Dev Ops

Hands-on experience with:

Jenkins

Git Lab 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

Postgre SQL

Database fundamentals & troubleshooting

Kafka

Messaging / event streaming

Rabbit MQ

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