E2E Solution Architect

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

Job summary

Ericsson Singapore is seeking an E2E Solution Architect to lead a technically ambitious migration of a live Singtel network to a cloud-native CNIS across three sites. You will own the end-to-end design and technical execution of migrating 5G SA Core and 4G EPC while ensuring service continuity for millions of subscribers.

This role requires deep telecom architecture experience, strong customer-facing skills, and a proven track record in large-scale operator transformations.

Qualifications

• 12–15+ years in Telecom Core and Cloud domains.
• 5+ years in 5G Core architecture.
• Proven track record in large-scale operator transformations.
• Strong executive presentation and customer-facing skills.

Responsibilities

• Own the Architecture — End to End across 4G/5G cores and CNIS.
• Develop HLDs, LLDs, migration strategies, and rollback plans.
• Lead migration from NFVi to CNIS across multiple sites.
• Govern Kubernetes cluster design and CNF onboarding.
• Define upgrade strategies and CI/CD/GitOps deployment.
• Chair architecture reviews and risk assessments.
• Engage with CTOs and executives to present roadmaps.

Skills

5G Core Experience

4G EPC Expertise

Cloud Native & CNIS

Kubernetes

CI/CD & GitOps

Automation & IaC

Networking & Observability

Security

Signalling & Charging

Tools

Kubernetes

ArgoCD

Terraform

Ansible

Jenkins

Helm

OpenStack NFVi

Job description

Join our Team

About This Opportunity. This is one of the most technically ambitious transformation programs in Southeast Asia's telecom landscape — and we need the architect to lead it. As E2E Solution Architect, you'll own the end-to-end design and technical execution of migrating a live Ericsson Dual Mode Core network — running 5G SA and 4G EPC simultaneously — from a 2-site NFVi deployment to a resilient, cloud-native 3-site CNIS architecture. Every design decision you make will directly impact network stability, service continuity, and the digital experience of millions of Singtel subscribers. This is a role for a technical authority who can lead from the front — with customers, with engineers, and in the boardroom.

What You'll Do

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. You'll develop HLDs, LLDs, migration strategies, and rollback plans — and you'll be accountable for every one of them.

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 isn't a goal. It's 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 that keep mission-critical services running without compromise.

Govern Lifecycle & Automate Everything

Define software upgrade and lifecycle strategies, lead EOM modernisation roadmaps, and govern CI/CD and GitOps deployment frameworks. You'll push for Infrastructure-as-Code, automated validation, and MOP automation — because smarter operations are non-negotiable.

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 — nothing falls through the cracks on your watch.

Be 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 — with clarity, credibility, and confidence.

What You Bring

• 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 — you build automation, not just processes.
• Networking & Observability — IP Networking, Diameter, HTTP2/SBI, DNS, Load Balancing, and Network Security.
• Monitoring, alerting, log analytics, capacity planning, and performance management.

Experience

• 12–15+ years in Telecom Core and Cloud domains; 5+ years in 5G Core architecture.
• Proven track record in large‑scale operator transformation programs in Tier-1 environments.
• Strong executive presentation and customer‑facing skills.

Why Join Ericsson?

At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before for some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.

Location

Singapore, SG

Equal Opportunity Employer

Ericsson is proud to be an Equal Opportunity Employer. Learn more.