Senior Security Engineer

Responsibilities：

1. Operate and improve security controls and tools, including monitoring, endpoint protection, and identity‑related services
2. Monitor, investigate, and respond to security alerts and incidents
3. Lead or support incident response activities, including analysis and follow‑up actions
4. Manage vulnerability findings and support risk mitigation with system owners
5. Maintain security documentation, procedures, and operational reports
6. Work with internal teams and external partners to support secure systems and services
7. Contribute to security awareness and training activities
8. Support continuous improvement of security operations and practices

Qualifications：

(Required)

1. 4–7+ years of relevant experience in information security, IT operations, risk management, or a related technical field
2. Bachelor’s degree in Computer Science, Information Security, Information Systems, or a related field, or equivalent experience
3. Practical experience with security operations, such as monitoring, incident response, or vulnerability management
4. Business‑level English communication skills, with the ability to work in an international environment

(Preferred)

1. Experience with enterprise security tools, such as SIEM, endpoint protection, Microsoft 365 security features, or identity‑related platforms
2. Broad understanding of security domains such as incident response, access control, vulnerability management, and risk management
3. Information security certifications (e.g., CISSP, CISM, CISA) or progress toward certification
4. Japanese language skills are an advantage
5. Experience working in a multicultural or international organization