Cloud-Native 5G & 4G Core E2E Architect

Ericsson; Singapore; On-site; SGD 180,000 - 300,000; Full time

Job summary

Ericsson in Singapore is seeking an E2E Solution Architect to lead a highly technical transformation program migrating a live dual‑mode core network (5G SA and 4G EPC) from a two-site NFVi to a resilient three‑site CNIS architecture. You will own end-to-end design and execution, impacting network stability and subscriber experience.

You will oversee end-to-end architecture across 4G/5G, cloud-native governance, CI/CD, and security; engage with Singtel executives; require 12–15+ years in telecom

Qualifications

• 5G & 4G Core Expertise
• Deep hands-on knowledge of Ericsson 5G SA Core — AMF, SMF, UPF, PCF, NRF, UDM, AUSF, CHF, SCP.
• Strong expertise in 4G EPC — MME, SGW, PGW, PCRF, HSS, OCS.
• Experience with IMS, Signalling, Charging, and Subscriber Data Management.
• Cloud Native & Infrastructure — Expert-level knowledge of Ericsson CNIS, CCD, CEE, Kubernetes, CNFs, and OpenStack-based NFVi.
• Strong grounding in storage, networking architecture, and service mesh concepts.
• Automation & DevOps — CI/CD pipeline design, GitOps, Ansible, Helm, Terraform, ArgoCD, Jenkins.
• Networking & Observability — IP Networking, Diameter, HTTP2/SBI, DNS, Load Balancing, and Network Security.
• Monitoring, alerting, log analytics, capacity planning, and performance management.

Responsibilities

• Own the Architecture — End to End: Define and govern the target-state architecture across 4G EPC, 5G SA Core, Signalling, Charging, Subscriber Data Management, and Cloud Infrastructure. Develop HLDs, LLDs, migration strategies, and rollback plans.
• Lead the Transformation: Drive the full migration from NFVi (CCD/CEE) to CNIS — planning and executing multi-site traffic migration, ISSU strategies, disaster recovery, and failover scenarios. Minimal customer impact is a requirement.
• Be the Design Authority for Cloud-Native: Own governance of Kubernetes cluster design, CNF onboarding, networking, storage, security, and observability. Drive N+1/N+2 resiliency and geo-redundancy requirements.
• Govern Lifecycle & Automate Everything: Define software upgrade and lifecycle strategies, lead EOM modernisation roadmaps, and govern CI/CD and GitOps deployment frameworks. Push for Infrastructure-as-Code, automated validation, and MOP automation.
• Lead Technical Governance: Chair architecture reviews and design authority forums. Conduct risk assessments for major transformations and CABs. Ensure alignment across Core, Cloud, Transport, OSS, and Security.
• Act as Singtel’s Trusted Technical Advisor: Engage directly with the customer’s CTO, architecture, and operations teams. Present transformation roadmaps, solution strategies, and architecture evolution at executive steering committees.

Skills

5G Core

4G Core

Ericsson CNIS

CNF Onboarding

Kubernetes

OpenStack NFVi

CI/CD

GitOps

Jenkins

Terraform

Ansible

ArgoCD

Networking

Observability

Security

Tools

CNIS

CNF

Kubernetes

OpenStack NFVi

GitOps

Terraform

Ansible

Helm

ArgoCD

Job description

Ericsson in Singapore is seeking an E2E Solution Architect to lead a highly technical transformation program migrating a live dual‑mode core network (5G SA and 4G EPC) from a two-site NFVi to a resilient three‑site CNIS architecture. You will own end-to-end design and execution, impacting network stability and subscriber experience.

You will oversee end-to-end architecture across 4G/5G, cloud-native governance, CI/CD, and security; engage with Singtel executives; require 12–15+ years in telecom