Full-time

SR SECURITY ANALYST

Posted by Lumen • Japan, Tokyo, Japan

📍 Japan, Tokyo 🕒 February 22, 2026

About the Role

The Role

Support Hour: Office Hour Work (may change to shift work)

The Main Responsibilities


  • Monitor, triage and response to alerts for client security events detected on the various monitoring system.
  • Investigation and resolution of outage or abnormal behavioral scenarios on MSS products.
  • Research and implement customer generated change requests for MSS products.
  • Generate incident cases and escalate to superordinate teams in accordance with time and severity-based SLA’s;
  • Perform tasks associated with the installation, turn up and maintenance of Lumen security infrastructure.
  • Manage technical workload and engage Incident Response Analysts and management
  • Inclusive of serving as the technical escalation by the L1 SOC Analyst
  • Perform complex changes within the managed security environment and manage and resolve customer fault and service outage / impairment events.
  • ...
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