【国内有数のエネルギー企業】セキュリティエンジニア

A Leading Japanese Energy company is looking for an experienced Security Engineer to support day-to-day cybersecurity operations, incident response, and security governance as part of its enterprise security team. This position is suited for security professionals who enjoy operational security, cross-functional collaboration, and working within a large enterprise environment.

Responsibilities:
- Perform day-to-day cybersecurity operations across the enterprise environment
- Monitor and manage security vulnerabilities and remediation activities
- Operate vulnerability management tools (Tanium experience preferred)
- Support endpoint and infrastructure security initiatives
- Participate in CSIRT operations and security incident response activities
- Investigate, analyze, and coordinate responses to security incidents
- Work with infrastructure and application teams to resolve security issues
- Assist in post-incident reviews and continuous improvement activities
- Develop and maintain security policies, standards, and procedures
- Support internal and external security audits
- Assist with risk assessments and compliance initiatives
- Maintain security documentation and operational procedures
- Work closely with internal business users and IT teams
- Communicate security risks and recommendations clearly to stakeholders
- Support ongoing improvements to enterprise security operations

Required Technical Skills
- 5+ years of hands-on cybersecurity experience
- Experience with vulnerability management tools (Tanium preferred)
- Experience operating within a CSIRT environment
- Security incident response experience
- Experience creating and maintaining security policies and standards
- Experience supporting internal and external audits
- Strong understanding of enterprise security operations
- Excellent communication and stakeholder management skills

Why should you apply?
- This opportunity allows you to become part of the cybersecurity function of one of Japan's largest energy companies while supporting business-critical security operations
- Work on enterprise-wide cybersecurity operations
- Gain exposure to large-scale corporate security environments
- Collaborate with experienced security professionals across multiple teams
- Long-term project with opportunities for extension Company Details:
Our client is one of Japan's leading energy companies, supporting critical national infrastructure while investing heavily in digital transformation and enterprise cybersecurity. The organization is modernizing its IT landscape through Zero Trust security, cloud adoption, and next-generation identity management. This is an opportunity to work on business-critical systems within a stable enterprise while leading large-scale security transformation initiatives.

Working Hours: 9:00 – 18:00 (Monday to Friday)
Working Style: Hybrid (1-2 days/week WFH)
Holidays: Saturday, Sunday, National Holidays, Year-end & New Year Holidays, Paid Leave
Benefits: Social Insurance, Transportation Allowance, Employment Insurance, Annual Health Check, Overtime Pay