Job Id : 10352
Posted : 2026-05-14
Industry : Information Technology and Services
Employment Type : Full Time, Permanent
Required Skills : Packet Core Nodes, Telco Clouds, Node Reachibility, Wireshark, VMWare, Dockers, Containers, OpenStack
City : Tokyo
State : Tokyo
Country : Japan
Annual Salary : ¥8,000,000 ~ ¥10,000,000
Job Description
Appealing Points:
- Opportunity to own advanced troubleshooting, RCA, and incident management for critical 4G/5G Packet Core environments
- Hands-on exposure to Packet Core operations combined with modern Telco Cloud technologies such as Linux, OpenStack, OpenShift, and containers
- High-impact bilingual role leading technical coordination with customers, onsite/offshore teams, and global support, enabling strong career growth in telecom operations leadership
Annual salary: 8 Million and above
Job Responsibility:
- Perform advanced troubleshooting, log collection, and in-depth analysis of Packet Core nodes across 4G and 5G environments.
- Own end-to-end incident management, including RCA preparation, troubleshooting plan (MOP), and resolution execution.
- Monitor network health, KPIs, FM/PM counters, and proactively identify and resolve issues impacting performance and availability.
- Lead troubleshooting bridges and technical discussions with customers, onsite/offshore teams, and global support teams.
- Handle complex issues related to node reachability, signaling, interfaces (S1, S5, Gx, etc.), and service impact scenarios.
- Perform live troubleshooting sessions and coordinate with multiple stakeholders for faster resolution.
- Manage access coordination, approvals, and ensure compliance with operational processes during critical activities.
- Execute and validate change implementations, patches, and configuration updates with minimal service disruption.
- Perform post-validation of logs and system behavior to ensure stability after fixes or changes.
- Create, manage, and drive incident/service tickets (including escalation to L3/vendor) until closure.
- Work closely with cross-functional teams for seamless coordination and timely issue resolution.
- Provide technical guidance and support to L1/L2 engineers and assist in skill development of the team.
- Prepare detailed reports, RCA documents, and customer communication for incidents and outages.
- Support translation and coordination activities (if required) for global customer interactions.
- Ensure adherence to SLA/KPI targets and continuously improve operational processes.
- Candidate will be working with Offhshore and Onsite Resources
Job Qualification:
- Should have deep knowledge of 4G and 5G call flows
- Candidate should have end to end understanding of the Packet Core Nodes (SGW, PGW, MME, PCRF etc. ), Good knowledge about interfaces connecting these nodes ( S1-U, S5, Gx, S1-etc. )
- Should have understanding of the Cloud environment and understanding of how EPC solutions are deployed on cloud.
- Candidate should have prior experience in Maintaining and troubleshooting packet core nodes, capture logs, performing RCA and share Reports
- Should have exp. in resolving different issues related to Node Reachibility, FM/PM and other KPI's.
- Sound have understanding of troubleshooting tools like Wireshark etc.
- Good working experience in Linux, VMWare, Dockers & Containers, OpenStack, Openshift
- Working knowledge on Packet Core Nodes SGSN / MME, GGSN/EPG, PCRF /SAPC, ePDG / WMG, 5G nsa /sa
- Working knowledge on Packet Core Nodes CMG, CMM, NRD will be an added advantage
- 4+ years with minimum 2+ years in PACKET CORE
- Strong Communication skills - Team handling skills - Analytical skills - Presentation skills.
- Mandatory Skills: Telecom 5G Wireless OAM SW
Language Skills: Business level Japanese (JLPT N2) and Fluent level English
Company Description:
A leading global information technology, consulting, and business process services company. We harness the power of cognitive computing, hyper-automation, robotics, cloud, analytics, and emerging technologies to help our clients adapt to the digital world and make them successful. A company recognized globally for its comprehensive portfolio of services, a strong commitment to sustainability, and good corporate citizenship, we have over 160,000 dedicated employees serving clients across six continents. Together, we discover ideas and connect the dots to build a better and bold new future.
[Measures against passive smoking]
No smoking indoors allowed
Designated smoking area