Containers / Kubernetes (K8S) L3 Engineer

CosMicIT; India; Sur place; INR 3 000 000 - 6 000 000; Plein temps

Résumé du poste

CosMicIT is hiring for an L3 operations owner for enterprise container platforms, overseeing Kubernetes lifecycle, CI/CD enablement, monitoring, security and reliability across on-premises and cloud-integrated environments.

The role focuses on maintaining availability, performing complex incident investigations, enabling secure deployments, and guiding L1/L2 teams with strong leadership and governance. This position requires 8+ years in a similar setting.

Qualifications

• 8+ years of relevant IT experience with current hands-on L3 ownership in a large enterprise managed-services environment.
• Strong ITIL-based incident, problem, change, release and configuration-management experience.
• Ability to troubleshoot end-to-end across platform, network, identity, security, integration and application layers.
• Experience creating technical documentation, runbooks, RCA reports, implementation plans and operational governance material.
• Clear customer-facing communication, technical leadership, stakeholder coordination and mentoring skills.
• Experience working in regulated or highly controlled environments; awareness of GxP, audit trails, validation evidence, segregation of duties and data privacy is desirable.

Responsabilités

• Operate Kubernetes clusters and supporting components across sandbox, development, integration, QA and production environments.
• Administer cluster upgrades, node lifecycle, namespaces, RBAC, network policies, ingress, service load balancing, certificates, secrets and configuration objects.
• Troubleshoot pods, scheduling, DNS, networking, storage, image-pull, performance, availability and application-deployment failures.
• Operate and support container runtime, Helm/GitOps deployment patterns, image promotion, artifact registry and CI/CD pipeline integration.
• Maintain observability using Prometheus and enterprise logging stacks; define alerts, dashboards, SLO indicators and actionable runbooks.
• Support platform storage and networking technologies such as Rook-Ceph/NFS, Calico/Cilium, NGINX Ingress and MetalLB or equivalent.
• Implement hardening, image scanning, patching, backup/recovery, compliance-as-code and secure credential integration with enterprise PAM.
• Contribute to platform automation frameworks and migration from legacy Kubernetes/Docker stacks to supported Kubernetes/containerd architectures.
• Own complex L3 incidents, problem investigations, root-cause analysis and permanent corrective actions for the assigned service.
• Perform proactive health checks, capacity and performance reviews, trend analysis, vulnerability remediation and service improvement.
• Plan and execute approved changes, releases, upgrades and minor enhancements using formal ITSM, change control and rollback procedures.
• Maintain architecture-aligned configurations, SOPs, runbooks, knowledge articles, configuration records and audit evidence.
• Coordinate with customer L4/architecture, cybersecurity, quality, application teams, service desk and third-party vendors while retaining operational ownership.
• Mentor L1/L2 engineers, conduct knowledge transfer, improve shift-left resolution and support major-incident technical bridges.
• Produce operational dashboards and reports covering availability, capacity, incidents, problems, changes, risks and improvement actions.

Connaissances

Kubernetes administration

Troubleshooting

ITIL processes

Documentation

Leadership

Outils

Linux/Red Hat

containerd/Docker

Helm

GitLab

Jenkins/CloudBees CI/CD

Description du poste

Provide L3 operational ownership for enterprise container platforms and workloads, including Kubernetes platform lifecycle, CI/CD enablement, monitoring, logging, security, storage and production reliability across on-premises and cloud-integrated environments.

Key responsibilities

• Operate Kubernetes clusters and supporting components across sandbox, development, integration, QA and production environments.
• Administer cluster upgrades, node lifecycle, namespaces, RBAC, network policies, ingress, service load balancing, certificates, secrets and configuration objects.
• Troubleshoot pods, scheduling, DNS, networking, storage, image-pull, performance, availability and application-deployment failures.
• Operate and support container runtime, Helm/GitOps deployment patterns, image promotion, artifact registry and CI/CD pipeline integration.
• Maintain observability using Prometheus and enterprise logging stacks; define alerts, dashboards, SLO indicators and actionable runbooks.
• Support platform storage and networking technologies such as Rook-Ceph/NFS, Calico/Cilium, NGINX Ingress and MetalLB or equivalent.
• Implement hardening, image scanning, patching, backup/recovery, compliance-as-code and secure credential integration with enterprise PAM.
• Contribute to platform automation frameworks and migration from legacy Kubernetes/Docker stacks to supported Kubernetes/containerd architectures.
• Own complex L3 incidents, problem investigations, root-cause analysis and permanent corrective actions for the assigned service.
• Perform proactive health checks, capacity and performance reviews, trend analysis, vulnerability remediation and service improvement.
• Plan and execute approved changes, releases, upgrades and minor enhancements using formal ITSM, change control and rollback procedures.
• Maintain architecture-aligned configurations, SOPs, runbooks, knowledge articles, configuration records and audit evidence.
• Coordinate with customer L4/architecture, cybersecurity, quality, application teams, service desk and third-party vendors while retaining operational ownership.
• Mentor L1/L2 engineers, conduct knowledge transfer, improve shift-left resolution and support major-incident technical bridges.
• Produce operational dashboards and reports covering availability, capacity, incidents, problems, changes, risks and improvement actions.

Required technical skills

• Advanced Kubernetes administration and troubleshooting; certification such as CKA/CKS is strongly preferred.
• Hands-on Linux/Red Hat, containerd/Docker, Helm, Git, GitLab, Jenkins/CloudBees or equivalent CI/CD tooling.
• Strong knowledge of CNI, CSI, ingress, load balancing, service discovery, DNS, PKI/TLS, RBAC and secrets management.
• Experience with Prometheus, Grafana, ELK/OpenSearch and enterprise monitoring/event-management integration.
• Working knowledge of Ansible, Python/Shell scripting, GitOps, infrastructure-as-code and automated remediation.
• Experience operating business-critical container platforms with formal change, release, DR and security controls.

Experience and qualifications

• 8+ years of relevant IT experience with current hands-on L3 ownership in a large enterprise managed-services environment.
• Strong ITIL-based incident, problem, change, release and configuration-management experience.
• Ability to troubleshoot end-to-end across platform, network, identity, security, integration and application layers.
• Experience creating technical documentation, runbooks, RCA reports, implementation plans and operational governance material.
• Clear customer-facing communication, technical leadership, stakeholder coordination and mentoring skills.
• Experience working in regulated or highly controlled environments; awareness of GxP, audit trails, validation evidence, segregation of duties and data privacy is desirable.

Key deliverables and success measures

• Stable service operations with timely restoration, high-quality RCA and reduction of repeat incidents.
• Successful execution of approved changes and releases with complete implementation, validation and rollback evidence.
• Current runbooks, configuration records, knowledge articles, support dashboards and audit-ready documentation.
• Measurable automation, reliability, security, compliance and user-experience improvements within agreed BAU capacity.
• Effective technical leadership, stakeholder communication, vendor coordination and capability uplift of L1/L2 teams.