E2E Expert - Data and Voice

Grow with us
As the tech firm that created the mobile world, and with more than 54,000 patents to our name, we've made it our business to make a mark. When joining our team at Ericsson you are empowered to learn, lead and perform at your best, shaping the future of technology. This is a place where you're welcomed as your own perfectly unique self, and celebrated for the skills, talent, and perspective you bring to the team. Are you in?
Come, and be where it begins.
Are you in?
We are seeking a E2E Core Expert to manage and govern our telecom core networks across circuit switched, IMS, packet core, and 5G Core domains. You will also provide war room incident support, ad hoc project support, and oversee lifecycle activities for robust governance frameworks.
Core Responsibilities
1. Circuit Switched Governance (MSC/MGW/HLR/VLR)• Govern maintenance, release activities, and availability of MSC, MGW, HLR, VLR systems.• Define and enforce fault/change/performance governance policies, including MTTR and SLA targets.• Collaborate with RAN, NOC, billing, and interconnect teams.
2. IMS Core Governance• Oversee deployment and operation of IMS elements: P-CSCF, I-CSCF, S-CSCF, HSS, MGCF, BGCF, TAS, MRFC/MRFP, IBCF/AGCF.• Manage commissioning, integration of SIP/Diameter/SS7/H.248.• Handle lifecycle activities: patching, upgrades, decommissioning across IMS platforms.• Ensure proper VoLTE, VoWiFi, RCS call-flow governance; troubleshoot SIP traces in war-room settings.
3. Packet Core Governance (EPC / 5GC)• Enforce governance for EPC and 5GC components: PGW, SGW, MME, PCRF, AAA, HSS, DRA, DNS.• Participate in capacity management and KPI monitoring.• Apply ITIL-based fault, change, and incident governance protocols.
4. 5G Core Governance & Application Support• Govern deployment and performance of 5G Core network functions: AMF, SMF, UPF, NRF, PCF, NSSF, NEF, BSF, SCP, SEPP.• Ensure governance for 5G SA architecture, cloud-native core (VNFs, CNFs, SDN/NFV orchestration) • Validate 5G call flows and application integration (registration, session management, slicing).• Manage compliance and performance of 5G-specific services: network slicing, MEC, edge applications.
5. War Room Incident Support & Troubleshooting• Lead war room operations during critical network events, coordinating incident teams, conducting RCAs.• Perform real-time analysis of signalling and packet logs (Wireshark, protocol analysers, network probes).• Deliver incident updates and root-cause reports, ensure post mortem governance.
6. Governance Framework & Documentation• Develop and maintain policies, SOPs, network diagrams (HLD/LLD), workflows, and audit documentation.• Ensure adherence to regulatory and internal standards (telecom codes, ISO, GDPR, etc.).• Conduct regular audits on SLA compliance, incidents, and performance metrics.
7. Operations & Continuous Improvement• Support SLA and incident ticketing audits.• Propose and implement improvements to reduce MTTR, drive governance maturity.• Mentor teams on core-network governance best practices and lifecycle management
Join our Team
Key Qualifications:• Bachelor's in Telecommunications, ECE, Computer Science, or related field.• 10 years+ in telecom core networks (MSC/MGW, IMS, EPC/5GC, 5G Core).• Proven war-room experience and incident troubleshooting credentials.• Hands-on with lifecycle tasks: deployments, patching, upgrades, decommissioning.• Skilled in capacity and performance governance aligned with SLAs.• Familiarity with RAN, interconnect, billing systems (OSS/BSS) and regulations.• Proficient with diagnostic tools: Wireshark, • Excellent stakeholder communication, documentation, and cross-team collaboration 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: Malaysia (MY) || Shah Alam
Req ID: 785534