1 Year Contract role

nRole: Kubernetes Manager

nLevel: L3 / Senior Kubernetes Administration & Operations

nPrimary Focus: Linux Administration, Kubernetes Administration, Production Operations, SRE, Monitoring, Security, Upgrades and Customer Escalation

nMandatory Skills

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- CKA certification (Preferred)
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- Strong/deep knowledge of Linux administration and troubleshooting
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- Solid hands-on experience in Kubernetes administration and L3 troubleshooting
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- Knowledge on virtualization like vSphere, OpenStack, Ovirt , KVM
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- Production experience in Kubernetes cluster operations, incident management and troubleshooting
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- Strong knowledge of Kubernetes architecture, control plane, worker nodes, networking, storage and workloads
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- Ability to handle P1/P2/P3 incidents and customer escalations within SLA
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- Hands-on experience with Kubernetes upgrades, patching and maintenance
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- Strong understanding of container runtime technologies:
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- containerd
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- CRI-O
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- Docker
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- CRI
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- Experience with container registries, preferably Harbor
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nMonitoring & Observability

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- Configure and administer Prometheus
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- Configure and manage Alert manager
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- Grafana dashboard creation and monitoring
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- Kubernetes cluster health monitoring
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- Alert investigation and resolution within SLA
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- Alert tuning and noise reduction
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- Identify duplicate/repeated alerts and optimize alert rules
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- Experience with ELK/EFK and Fluentd
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- Log collection, analysis and troubleshooting
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nCI/CD & DevOps

nHands-on experience with:

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- Jenkins
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- GitLab CI/CD
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- Git
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- Container image build and deployment
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- Kubernetes deployment automation
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- CI/CD troubleshooting
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nKubernetes Operations

nResponsible for:

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- Day-to-day Kubernetes cluster administration
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- L3 troubleshooting of Kubernetes issues
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- Kubernetes upgrade and patching activities
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- Cluster health checks
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- Node and pod troubleshooting
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- Control-plane and worker-node troubleshooting
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- Kubernetes networking troubleshooting
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- Kubernetes storage troubleshooting
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- Resource and performance analysis
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- Incident/problem management
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- Root Cause Analysis (RCA)
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- Vulnerability remediation
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- Production change implementation
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- Customer-specific Kubernetes requirements
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nSecurity & Vulnerability Management

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- Kubernetes security best practices
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- Vulnerability identification and remediation
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- Container image vulnerability management
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- Registry security
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- Kubernetes RBAC
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- Network/security policy concepts
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- SSL/TLS certificate management
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- Experience with security tools such as Gatekeeper
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- Ability to coordinate vulnerability fixes across OS, Kubernetes and container layers
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nNetworking

nStrong understanding of:

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- DNS
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- TCP/IP and L3 networking
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- Load Balancers
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- SSL/TLS termination
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- Ingress
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- Kubernetes Services
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- Network troubleshooting
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- Ingress Controllers
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- Istio Gateway
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- Service Mesh concepts
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- NGINX
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- Kong API Gateway
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nStorage

nGood understanding of Kubernetes storage and underlying infrastructure:

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- NFS / File storage
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- Block storage
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- Object storage
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- PV/PVC
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- Storage Class
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- CSI
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- Storage troubleshooting
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- Mount and I/O issues
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- Storage performance concepts
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nPlatform Components

nWorking knowledge of:

nComponent Required Knowledge

nIstio

nService Mesh, Gateway, traffic management

nNGINX

nIngress / reverse proxy

nKong

nAPI Gateway

nRedis

nCache / datastore

nPostgreSQL

nDatabase fundamentals & troubleshooting

nKafka

nMessaging / event streaming

nRabbitMQ

nMessage broker

nKeycloak

nIAM / authentication

nGatekeeper

nKubernetes policy enforcement

nHarbor

nContainer registry

nPrometheus

nMonitoring

nGrafana

nVisualization

nAlertmanager

nAlert management

nELK

nCentralized logging

nFluentd

nLog collection

nCustomer & Operations Responsibilities

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- Provide 24×7/on-call customer support as required
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- Handle customer escalations at OS and Kubernetes levels
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- Understand and resolve customer production issues
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- Participate in incident bridges and technical discussions
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- Perform RCA for critical incidents
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- Track and resolve tickets within defined SLA
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- Handle day-to-day customer requirements
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- Coordinate with development, compute, network, storage, security and application teams
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- Ensure production changes follow the approved change-management process
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- Prepare technical documentation and operational procedures
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📌 Manager (Tamil Nadu)
🏢 Tata Communications
📍 Tamil Nadu