SDM Core Engineer

SDM Core Engineer

Employment Type: Full-time

Job Location: Asia

Department: Technology / Telecom Engineering

Number of Vacancies: 1

Level: Senior / Expert

Hiring Model: Staff Augmentation / Client Placement

Client: Reputed Telco-Based Organization in the Asia Region

Travel Requirement: Regional travel as required

Experience Required: 7+ Years in Telecom SDM / Core Network Engineering

Job Context

MIAKI is an organization with skilled resources that are relentlessly working to make a difference in the spectrum of Tech & Digital Services. As a Multi-Country Service Provider, we specialize in customized software solutions, digital transformation, managed services, and skilled technology resources across local and international markets.

We are hiring an experienced SDM Core Engineer for placement with one of our reputed Telco-based clients in the Asia region.

This is a hands-on technical engineering role, focused on the deployment, configuration, integration, commissioning, testing, migration, troubleshooting, and operational support of Subscriber Data Management (SDM) solutions.

The ideal candidate should have practical experience with SDM products and subscriber data platforms such as HLR, HSS, UDM, AUSF, One-NDS, and SDL, together with integration across IMS, VoLTE, Packet Core, and 5G Core environments.

This is not a managerial or service delivery management position. The role requires strong hands-on technical expertise in SDM deployment, integration, testing, migration, and troubleshooting.

Role & Responsibilities

SDM Deployment & Configuration

• Perform hands-on installation, deployment, configuration, and commissioning of SDM/Core Network products.
• Deploy and configure subscriber data platforms and repository components such as Nokia One-NDS and SDL.
• Work with HLR, HSS, UDM, AUSF, EIR, and related subscriber data elements.
• Execute deployment activities across bare-metal, virtualized, and cloud-native environments.
• Prepare and execute Methods of Procedure (MOP).
• Perform pre-checks, deployment, post-checks, service validation, and commissioning.
• Support production deployment and post-deployment stabilization.

SDM & Core Network Integration

• Perform hands-on integration of SDM platforms with the mobile Core Network.
• Integrate subscriber data platforms with IMS, VoLTE, Packet Core, and 5G Core.
• Configure and troubleshoot interfaces using Diameter, SIP, HTTP/2, and LDAP.
• Validate connectivity, signalling, subscriber data flows, and end-to-end functionality.
• Troubleshoot integration issues between SDM and Core Network elements.
• Coordinate technically with Core Network, IP, transport, cloud, OSS/BSS, and vendor teams.

Subscriber Data Migration

• Execute subscriber data migration from legacy platforms to modern SDM architectures.
• Perform migration preparation, execution, validation, and reconciliation.
• Prepare and execute migration MOPs and rollback procedures.
• Support subscriber profile migration and synchronization.
• Validate migrated data and troubleshoot migration failures.
• Perform post-migration service validation and customer acceptance activities.

Testing & Acceptance

• Prepare and execute Acceptance Test Procedures (ATP).
• Perform functional, integration, regression, migration, and end-to-end testing.
• Validate SDM functionality and Core Network integration.
• Troubleshoot defects identified during testing and deployment.
• Maintain test results, evidence, logs, and technical findings.
• Support customer acceptance and technical sign-off.

Cloud, Virtualization & Infrastructure

• Deploy and support SDM/Core Network functions in bare-metal, virtualized, and cloud-native environments.
• Work with VNF/CNF deployments.
• Hands-on exposure to OpenStack, Kubernetes, and VMware.
• Support deployment, configuration, scaling, networking, connectivity, and troubleshooting.
• Work with infrastructure/cloud teams to resolve platform-related issues.

Troubleshooting & Technical Support

• Troubleshoot SDM, subscriber database, signalling, integration, deployment, and configuration issues.
• Analyze logs, alarms, traces, configurations, and system behaviour.
• Perform technical root-cause analysis and corrective actions.
• Support critical deployment, migration, integration, and production incidents.
• Coordinate with Nokia/vendor TAC, engineering, and R&D teams for complex issues.
• Support post-go-live stabilization.

Documentation & Handover

• Prepare deployment, integration, testing, migration, and commissioning documentation.
• Maintain MOPs, ATPs, configuration documents, test reports, migration reports, and as-built documentation.
• Provide technical knowledge transfer to operations/support teams.
• Support operational handover after successful deployment and acceptance.

Job Requirements

Educational Requirements

• Bachelor's degree in EEE, ETE, CSE, Telecommunications Engineering, Computer Engineering, or related technical discipline.

Experience Requirements

• 7+ years of hands-on experience in Telecom Core Network / SDM Engineering.
• Strong practical experience in SDM deployment, configuration, integration, testing, migration, commissioning, and troubleshooting.
• Hands-on experience with HLR, HSS, UDM, AUSF, One-NDS, SDL, or equivalent SDM platforms.
• Experience working with telecom operators, OEMs, or managed service environments.
• Experience executing MOP and ATP activities.
• Experience supporting large-scale telecom deployment, integration, or migration projects.

Required Technical Skills & Expertise

SDM / Subscriber Data

• HLR, HSS, UDM, AUSF
• Nokia One-NDS and SDL
• EIR and subscriber data platforms
• Subscriber profile management and data synchronization
• SDM architecture and Core Network integration

Core Network Integration

• IMS
• VoLTE
• EPC / Packet Core
• 4G Core
• 5G Core

Protocols & Interfaces

• Diameter
• SIP
• HTTP/2
• LDAP

Deployment & Migration

• Installation and configuration
• Deployment and commissioning
• MOP preparation/execution
• ATP preparation/execution
• Functional and integration testing
• Subscriber data migration
• Data validation and reconciliation
• Rollback procedures
• Operational handover

Cloud & Virtualization

• OpenStack
• Kubernetes
• VMware
• VNF/CNF deployment
• Virtualized and cloud-native telecom infrastructure

Preferred Skills & Qualifications

• Strong experience with Nokia SDM/Core Network products.
• Hands-on experience with Nokia One-NDS and SDL.
• Live telecom experience with HLR/HSS/UDM/AUSF.
• Experience with 5G Core and cloud-native network functions.
• Kubernetes-based telecom deployment experience.
• Multi-vendor Core Network integration experience.
• Large-scale subscriber data migration experience.
• Knowledge of Linux/Unix and basic scripting is an advantage.
• Nokia or relevant telecom vendor certification is an advantage.
• Asia-Pacific telecom project experience is preferred.

Key Competencies

• Strong hands-on engineering and troubleshooting capability.
• Strong understanding of SDM and subscriber data architecture.
• Ability to independently execute complex deployments and integrations.
• Strong analytical and problem-solving skills.
• Ability to work under pressure during deployment and migration windows.
• Strong attention to configuration and implementation details.
• Good communication and technical documentation skills.
• Ability to work effectively with customers, vendors, and engineering teams.
• Willingness to travel regionally as required.

Key Performance Indicators

• Successful SDM product deployment and commissioning.
• Successful HLR/HSS/UDM/AUSF/One-NDS/SDL integration.
• Successful Core Network integration and service validation.
• Successful MOP and ATP completion.
• Successful subscriber data migration and validation.
• Timely resolution of deployment and integration issues.
• Successful customer acceptance and operational handover.
• Quality and completeness of technical documentation.
• Post-deployment stability and service readiness.

Candidate Eligibility

• Candidates with 7+ years of hands-on SDM/Core Network engineering experience are encouraged to apply.
• Direct experience with HLR, HSS, UDM, AUSF, One-NDS, SDL, or equivalent SDM products is strongly preferred.
• Candidates must be comfortable performing hands-on deployment, configuration, integration, testing, migration, commissioning, and troubleshooting.
• Candidates should be willing to work according to client project requirements and regional travel requirements.

Salary: Competitive and negotiable based on experience, technical expertise, and market standards.

Compensation & Benefits: As per company/client policy.

Interview & Assessment Process

1. Initial screening by MIAKI HR / Talent Acquisition.
2. Technical assessment focused on SDM/Core Network engineering.
3. Technical interview covering SDM products, deployment, integration, troubleshooting, migration, and testing.
4. Client-specific technical interview, where applicable.
5. Final selection discussion.

Only shortlisted candidates will be contacted via email or WhatsApp. Shortlisted candidates may be invited to participate in online interviews and/or a video assessment, depending on recruitment and client evaluation requirements.

Application Process

Interested candidates should submit an updated CV highlighting hands-on experience in HLR, HSS, UDM, AUSF, One-NDS, SDL, SDM deployment, configuration, commissioning, Core Network integration, IMS/VoLTE, Packet Core, 5G Core, Diameter, SIP, HTTP/2, LDAP, OpenStack, Kubernetes, VMware, VNF/CNF deployment, MOP, ATP, subscriber data migration, testing, troubleshooting, and operational handover.

Candidates with Nokia SDM product experience and regional/multi-country telecom deployment experience in Asia-Pacific are encouraged to highlight this specifically.

This position is being recruited by MIAKI for staff augmentation and placement with a reputed Telco-based client in the Asia region, based on the client's project and business requirements.