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The candidate shall be part of technical skilled team providing configuration, implementation, testing, operations and maintenance of the Mobile Core infrastructure supporting Singtel Mobile’s mobile networks and value-added systems including advance 5G services.

Make an impact by:

• Responsible for the operations of the mobile PNF (Physical Network Function), VNF (Virtualized Network Function) and CNF (Containerized Network Function) platforms are being maintained optimally. As well as performing system migrations from legacy PNF and VNF platforms to CNF-based infrastructure.
• Carry out Mobile Data Network change management including patch loading, implementation of software, hardware upgrades and configuration changes on mobile data core network elements like Mobility Management Entity (MME), Gateways (SGW/PGW), Domain Name Server (DNS), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Local Packet Gateway (LPG), Network Repository Function (NRF), and its supporting nodes in a hybrid (Native/Virtualized/Containerized) environment. The service supported by us includes 4G & 5G.
• Perform new corporate Access Point Name/Data Network Name (APN/DNN) provisioning configurations and updating of existing corporate services to support evolving Enterprise business requirements.
• Work on network / service automation including testing and rolling out new mobile-related products and services.
• As upgrades and patch loading may disrupt mobile services the successful candidate will need to work outside normal working hours to carry out such activities.
• The successful candidate is required to be on 24/7 standby alert to handle unplanned system faults and/or service degradation on mobile data core network elements as such Mobility Management Entity (MME), Gateways (SGW/PGW), Domain Name Server (DNS), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Local Packet Gateway (LPG), Network Repository Function (NRF),  Diameter Edge Agent (DEA), GPRS Tunneling Protocol Proxy (GTP-Proxy), Service Communication Proxy (SCP) and Security Edge Protection Proxy (SEPP).
• Troubleshoot and perform root causes failure analysis for software & hardware faults related to the network nodes.
• Liaise and co-ordinate with system vendor(s) for the delivery, testing and timely implementation of new software, hardware and patches.
• Create and maintain engineering test documentation and guidelines system functional and mobile services testing.
• Involved in performing disaster recovery activity expeditiously in times of service disruptions to minimize service downtime and revenue loss. 
• Provide engineering support / expertise to Planning and Product Marketing in technical feasibility studies and trials of new products and services.
• Ensure that service quality & performance of Mobile Data (packet switched) related services are maintained at high quality, with minimum service disruption.
• Review existing best practices and processes for system acceptance testing and introduce preventive or optimized measures to improve the network quality cum resilience in a proactive manner.

Skills for Success:

• A good engineering diploma preferably in wireless data communications.
• Must be a team player coupled with strong communication, organizational and interpersonal skills and be able to work independently.
• Possess good analytical and systematic troubleshooting skills in the area of technical fault isolation and rectification.
• Must be self-driven and energized to embrace new technology and develop ways to improve customer experience
• Strong interest in system and process automation with good knowledge in automation tools e.g. Ansible. Resolve, UI Patch, RPA.
• Familiar with Mobile technology such as UMTS, LTE and 5G operating in both native, virtualized and containerized environments.
• Working experience and familiar with best practices in mobile switching equipment (Ericsson) and virtualized / cloud technology like Openstack/NFVI/Container (Kubernetes)/SDN will be an added advantage.
• Certification in CCNA and/or CCNP is desirable as IP technologies are increasingly being deployed in mobile networks.