SR SECURITY ANALYST

Lumen

Full-time Japan, Tokyo Computer Occupations

Posted:

March 02, 2026

Location:

Japan, Tokyo, Japan

Job Description

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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Job Overview

Job Type: Full-time

Location: Japan, Japan

Posted: March 02, 2026

Deadline: April 11, 2026