UDM Integration Engineer

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About this opportunity:
As a UDM / Core Data & Provisioning Solution Architect, you will shape end-to-end solutions across Ericsson's subscriber data and provisioning portfolio, including CCDM, CCRC, CCSM, HSS/HLR, EDA, and related 4G and 5G Core network functions. You will translate customer business and technical needs into secure, scalable, and resilient architectures for cloud-native and hybrid environments.
Working with customers, product and project teams, delivery engineers, operations, and partners, you will lead solution definition from requirements and high-level design through deployment assurance and operational handover, ensuring solutions meet performance, availability, interoperability, security, and lifecycle requirements.
What you will do:

• Lead customer and stakeholder workshops to understand business objectives, requirements, constraints, and migration needs.
• Define end-to-end architectures for CCDM, CCRC, CCSM, HSS/HLR, EDA, and their integration with 4G/5G Core network functions and OSS/BSS systems.
• Produce and review architecture deliverables, including high-level designs, interface and deployment views, design decisions, and risks.
• Shape cloud-native deployment approaches covering Kubernetes/CNF topology, resilience, scaling, observability, and lifecycle management.
• Define integration principles and end-to-end flows across interfaces and protocols such as Diameter, HTTP/2, REST, SOAP, XML, LDAP, and 5G SBI/N interfaces.
• Assess capacity, performance, availability, disaster recovery, networking, and security requirements, identifying dependencies and trade-offs.
• Develop migration and upgrade strategies covering coexistence, data transition, rollback, and service continuity.
• Guide technical teams through detailed design, integration, verification, and acceptance, ensuring traceability to customer requirements.
• Lead technical governance, design reviews, risk management, and resolution of cross-domain architecture issues.
• Support bids with solution descriptions, estimates, compliance responses, and scope clarification.
• Ensure designs are implementable and supportable, contributing to documentation, knowledge transfer, and handover.
• Drive standardization and automation in solution delivery.

The skills you bring:
Must-have

• Typically 12+ years in telecommunications Core network architecture, solution design, or technical leadership.
• Strong understanding of 4G/5G Core architecture and subscriber data and provisioning domains.
• Experience with one or more of CCDM, CCRC, CCSM, HSS/HLR, EDA, or comparable subscriber data and charging platforms.
• Ability to translate customer requirements into clear end-to-end architectures and delivery plans.
• Good knowledge of Core network protocols such as Diameter, HTTP/2, REST, SOAP, LDAP, and 5G SBI.
• Understanding of cloud-native functions, containers, and Kubernetes-based telecom deployments.
• Working knowledge of security, resiliency, performance, and capacity principles for carrier-grade solutions.
• Familiarity with Linux and IP networking (routing, firewalls, load balancing, DNS).
• Strong stakeholder management, presentation, and technical writing skills in English.
• Structured problem-solving and management of risks and trade-offs across domains.

Nice-to-have

• Experience with Ericsson 5G Cloud UDM & Policy, EDA, DMC, or other Ericsson Core products.
• Exposure to AMF, SMF, PCF, SC, UDR, AUSF, and policy/charging (PCC) solution architecture.
• Experience in customer-facing architecture, technical presales, bids, or solution consulting.
• Knowledge of CNIS/ECCD or equivalent telecom cloud platforms.
• Experience with Python, Bash, Ansible, CI/CD, or infrastructure as code.
• Background with a major telecom vendor, operator, or systems integrator.

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: 794504