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Cyber Security Engineer

Japan, Tokyo 5000000.00 - 8000000.00 JPY / Year · Job Posted February 13, 2026
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Job Responsibility

  • Operate the group’s host intrusion detection system – daily monitoring, alert raising, troubleshooting, maintenance, scale-out
  • Operate department-owned security tools
  • Conduct periodic security scans to pre-emptively find vulnerabilities
  • Implement open-source/third-party tools proof of concepts to assist in detection, prevention and analysis of security threats
  • Suggest implementation of protections (patch management, compensatory controls)
  • Analyze ACLs/firewall rules, provide suggestions on configuration and possible improvements
  • Advise product development teams on compliance-related questions
  • Act as a bridge between security alerts from SOC and affected products owner and development team

Requirements

  • Good knowledge in security solutions such as anti-virus software, intrusion detection, firewalls, content filtering and file integrity monitoring
  • Understanding security assessments and their results (e.g. issues identified in vulnerability scans and penetration tests etc.) and experience in fixing detected vulnerabilities to maintain a high-security standard
  • 3 years working experience in IT security engineering or security analyst
  • Experience with risk assessment methodologies
  • 3 years system administration experience supporting or administrating Linux
  • Working experience with bash scripts and versioning tools such as Git
  • Good working knowledge of Kubernetes and Docker

What we offer

  • 健康保険,厚生年金保険,雇用保険
  • 日曜日,土曜日,祝日

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