CNIS Engineer - NFVI

Job Summary:

As a CNIS Engineer, you will be responsible for the design, deployment, administration, and lifecycle management of Ericssons CNIS-based infrastructure. This includes deep hands-on work in Kubernetes platforms, Cloud-Native networking, Rook/Ceph storage, and CNF onboarding for 5G core networks and telecom workloads.

Key Responsibilities:

CNIS Deployment & Operations

• Install and configure CNIS platforms on bare-metal or virtual infrastructure.
• Set up and manage ECCD/Kubernetes clusters using tools like Rancher (RKE2), CEE, or kubeadm.
• Configure CNI plugins (Multus, Calico, SR-IOV) and CSI drivers (Rook/Ceph).
• Manage Day to Day operations for CNFs including Helm deployments, scaling, and upgrades and troubleshooting for existing opration Issues.

Infrastructure & Storage

• Manage Rook-Ceph clusters and troubleshoot persistent storage issues.
• Monitor hardware health (compute/storage/network) and ensure infrastructure compliance.
• Support cluster high availability, resilience, and performance tuning.
• Syslog, PKI Knowledge and experience.

Networking & Security

• Hands on experience on SDI/Juniper/Extreme SLX switches.
• Configure pod and service networking, BGP peering, VLAN/VXLAN overlays, and L2/L3 IP planning.
• Implement and audit network policies, RBAC, and security postures using standard Kubernetes practices.
• Integrate LDAP/Keycloak/SSO for user authentication and IAM.
• Hands on on ESM.

Monitoring & Troubleshooting

• Integrate Prometheus/Grafana, EFK/ELK or Loki for observability.
• Use kubectl, ceph, and Linux tools for troubleshooting nodes, pods, storage, and networking.
• Analyse CNF behaviour during failures and generate RCA documentation.
• Use Netcool & OMC for monitoring.

Required Skills & Experience:

• 510 years of experience in cloud-native infrastructure or telco platforms.
• Strong hands-on in Kubernetes (certifications like CKA/CNCF preferred).
• Expertise in:
• CNIs (Multus, Calico, SR-IOV)
• Storage (Rook/Ceph, CSI)
• Linux (RHEL/CentOS/Ubuntu)
• Networking (L2/L3, BGP, VLAN, IPAM, Juniper/Extreme Switches)
• Experience with:
• Helm, YAML, Git
• Ericsson tools: ENM, CENX, EO-EVNFM, OMC & ESM.
• Familiarity with Ericsson CNIS framework is strongly preferred.

Preferred Certifications:

• Certified Kubernetes Administrator (CKA)
• CNCP/CNF Ready Certifications (Cloud Native Telco)
• RHCE or Linux equivalents

Soft Skills:

• Strong analytical and problem-solving skills
• Ability to work in 24/7 support rotations if required
• Excellent documentation and communication skills
• Team player with cross-functional collaboration experience

Optional/Bonus Skills:

• Ansible/Terraform.
• Monitoring (Prometheus, Grafana)
• Logging (EFK/ELK, Loki)