【国内有数のエネルギー企業】セキュリティエンジニア ｜東京オフィス

* 和文は英文に続く

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
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

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
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大手日系エネルギー企業では、エンタープライズセキュリティチームの一員として、日々のサイバーセキュリティ運用、インシデント対応、およびセキュリティガバナンスを担うセキュリティエンジニアを募集しています。運用型セキュリティに携わりたい方や、社内のさまざまな部門と連携しながら大規模な企業環境で経験を積みたい方に最適なポジションです。

業務詳細
- エンタープライズ環境における日常的なサイバーセキュリティ運用
- セキュリティ脆弱性の監視・管理および改善対応の推進
- 脆弱性管理ツールの運用（Taniumの利用経験があれば尚可）
- エンドポイントおよびインフラセキュリティ施策の推進・支援
- CSIRT業務およびセキュリティインシデント対応への参画
- セキュリティインシデントの調査・分析および対応の調整
- インフラ・アプリケーションチームと連携したセキュリティ課題の解決
- インシデント発生後のレビューおよび継続的改善活動の実施
- セキュリティポリシー、標準、運用手順書の策定・維持
- 社内外のセキュリティ監査対応
- リスクアセスメントおよびコンプライアンス施策の支援
- セキュリティ関連ドキュメントおよび運用手順書の整備・管理
- 社内ユーザーおよびIT部門との密接な連携
- セキュリティリスクや改善提案をステークホルダーへ分かりやすく説明
- エンタープライズセキュリティ運用の継続的な改善を推進

ポジションの魅力
- 日本を代表する大手エネルギー企業のサイバーセキュリティ部門で、事業を支える重要なセキュリティ運用に携わることができます
- 全社規模のサイバーセキュリティ運用に携わる貴重な経験を積むことができます
- 大規模エンタープライズ環境におけるセキュリティ運用の知識・経験を深めることができます
- 経験豊富なセキュリティ専門家と連携しながら、専門性を高められる環境です
- 長期プロジェクトのため、契約延長の可能性があります


会社概要:
国内有数のエネルギー企業として、石油・エネルギー事業に加え、再生可能エネルギーや次世代インフラへの投資を積極的に進めています。
現在は全社的なデジタルトランスフォーメーションを推進しており、Zero Trust、クラウドセキュリティ、ID管理基盤の刷新など、エンタープライズ全体のサイバーセキュリティ強化に取り組んでいます。
社会インフラを支える安定企業でありながら、最新技術を活用した大規模セキュリティプロジェクトに携われる環境です。

勤務時間: 9:00～18:00（月～金）
勤務形態: ハイブリッド勤務（オフィス出社1～2日/Week）
勤務地: 東京都
休日: 土日祝日、年末年始、有給休暇
福利厚生: 社会保険、交通費支給、定期健康診断、雇用保険

- 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

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- サイバーセキュリティ分野での実務経験5年以上
- 脆弱性管理ツールの運用経験（Taniumの経験があれば尚可）
- CSIRTでの実務経験
- セキュリティインシデント対応の経験
- セキュリティポリシーおよび各種標準の策定・運用経験
- 社内外監査への対応経験
- エンタープライズ環境におけるセキュリティ運用に関する深い理解
- 優れたコミュニケーション能力およびステークホルダーとの調整能力