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Job ID : 1558929 Date Updated : September 22nd, 2025
【Eng-Only】 Network Performance Engineer

【Eng-Only】 Network Performance Engineer

Location Tokyo - 23 Wards
Job Type Contract
Salary 6 million yen ~ 7 million yen

Job Description

Ensure high performance of advanced telecom network nodes through KPI ownership and analysis.
Drive enhancements, troubleshoot end-to-end issues, and deliver actionable insights to stakeholders.

Client Details

This organization is a global leader in the telecom industry, recognized for driving innovation in 4G and 5G deployment. They provide a highly technical environment where engineers are empowered to take ownership, lead cross-functional initiatives, and influence the performance of next-generation networks. With a strong culture of innovation and accountability, it's an ideal place for experts who want their technical contributions to create a visible impact.

Description

  • Act as the domain expert for network performance and KPIs
  • Monitor EPC and 5G core nodes, troubleshoot issues, and manage escalations
  • Lead joint discussions and investigations with stakeholders
  • Prepare performance reports and executive dashboards for management
  • Assess new features and activities from a performance perspective

Job Offer

  • Opportunity to shape performance in advanced telecom networks
  • Exposure to the latest 5G SA and EPC technologies
  • High-impact role with direct visibility to leadership
  • Work with modern tools (Docker, Kubernetes, passive probing, etc.)
  • International team with an English-speaking environment

To apply online please click the 'Apply' button below. For a confidential discussion about this role please contact Taishi Oyamada on +813 6832 8665.

General Requirements

Minimum Experience Level No experience
Career Level Mid Career
Minimum English Level Business Level
Minimum Japanese Level Basic
Minimum Education Level Bachelor's Degree
Visa Status No permission to work in Japan required

Required Skills

  • 8+ years of experience in mobile telecom
  • Strong knowledge of 4G/5G core networks (EPC & 5G SA elements)
  • Deep understanding of network protocols and service-based interfaces
  • Skilled in Docker, Kubernetes, Wireshark, and log analysis
  • Proven troubleshooting, analytical, and problem-solving skills

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Contract
Salary 6 million yen ~ 7 million yen
Industry Internet, Web Services

Job Category