Appealing Points:
- Work with Advanced 5G Core Technologies: Provide L2/L3 support for end-to-end 5G Core operations, gaining hands-on experience with cloud-native architectures, Kubernetes, CNF, and multi-vendor packet core solutions.
- Solve High-Impact Technical Challenges: Lead complex incident resolution, root cause analysis, performance optimization, and service quality improvements in a mission-critical telecom environment.
- Drive Innovation in Next-Generation Networks: Collaborate with global teams while leveraging automation, AI frameworks, and modern cloud technologies to enhance operational efficiency and support large-scale 5G deployments.
Annual salary : 7 Million yen and Above.
Job Responsibilities:
- Provide L2/L3 level troubleshooting support for 5GC E2E operations.
- Resolve technical issues related to core and cloud infrastructure, including vendor-specific product support.
- Manage and resolve complex customer issues escalated from the monitoring support team.
- Perform in-depth audits and implement improvement plans.
- Conduct regular technical analysis to ensure service optimization and quality.
- Collaborate with internal teams, partners, and vendors to resolve technical issues and implement corrective actions.
- Conduct configuration testing and verification to ensure compliance with regulatory and service requirements.
- Analyze service/operational KPIs, generate reports, and contribute to process and procedure improvements.
- Document and maintain detailed records of support activities, including resolutions and troubleshooting steps.
- Execute configuration changes and manage communication across different domains.
- Build and maintain a knowledge database to enhance daily operational efficiency.
- Identify and fix incidents within the agreed Service Level Agreement (SLA).
- Participate in an on-call shift rotation, including occasional night and weekend support for urgent issues or scheduled maintenance.
Job Qualifications:
- 10+ years of experience in mobile core network operations or planning.
- Hands-on experience with 5GC products.
- Hands-on experience with multi-vendor Packet Core products.
- Hands-on experience with container-based infrastructure (Kubernetes).
- Strong knowledge of automation and AI frameworks.
Preferred Qualifications:
- Deep understanding of mobile network protocols (Diameter, GTP, SIP, RTP, IP-based protocols).
- Strong technical knowledge of E2E Virtual Core network architecture (IMS, EPC, RCS, CNF) and CNF-based mobile networks.
- Experience with monitoring tools, performance analysis, and 5G Core/Cloud deployment.
- Proficiency in industry-standard tools for analyzing KPIs and metrics.
- Working experience with OpenStack or Kubernetes.
- Expertise in Method of Procedure (MOP) preparation and validation.
- Experience leading Incident Bridges and preparing reports for senior management.
- Strong analytical, problem-solving, and interpersonal communication skills.
- Relevant technical certifications.
Language Requirements: Elementary level Japanese (not mandatory) and Business level English
About Company:
The largest eCommerce company in Japan, and the third-largest eCommerce marketplace company worldwide. The organization provides a variety of consumer and business-focused services including e-commerce, e-reading, travel, banking, securities, credit card, e-money, portal and media, online marketing, and professional sports. The company is expanding globally and currently has operations throughout Asia, Western Europe, and the Americas.
[Measures against passive smoking]
No smoking indoors allowed
Designated smoking area
. Skillset Required: 5G Core Technologies, L2/L3 Support, 5G Core Operations, Cloud-Native Architectures, Kubernetes, CNF, Multi-Vendor Packet Core Solutions, Incident Resolution, Root Cause Analysis, Performance Optimization, Service Quality Improvement, Automation, AI Frameworks, Cloud Technologies, 5G Deployment, Troubleshooting, Core Infrastructure, Cloud Infrastructure, Vendor-Specific Product Support, Customer Issue Resolution, Auditing, Improvement Planning, Technical Analysis, Service Optimization, Quality Assurance, Collaboration, Configuration Testing, Verification, Regulatory Compliance, KPI Analysis, Reporting, Process Improvement
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