Manager

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 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 & 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