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 to 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.
What happens once you apply?Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: Singapore (SG) || Singapore
Req ID: 786036
The future of mobile isn’t on the horizon, it’s happening now. At Ericsson, we’re building the foundation for an open network ecosystem where industries, developers, and enterprises thrive.
The convergence of 5G, AI, cloud, and network APIs isn’t just a technological shift; it’s a transformation that is redefining industries and enhancing everyday life. Open, programmable networks are enabling real-time innovation and unlocking new business models across the globe.
Imagine a world where developers can dynamically access network capabilities on demand, where enterprises don’t just use connectivity but shape it. This isn’t a distant vision, it’s the ecosystem we’re creating today.
Collaboration fuels everything we do. By working across industries, we’re designing a future where connectivity isn’t just seamless. It’s intelligent, programmable, and transformative.
The shift is happening. Are you part of it?
