SOC, IT Sec assessments, Infra hardening

Cyber Security Specialist (IT Infra Managed Services)

採用企業 EIRE Systems K.K. / エイラ システム 株式会社 勤務地 東京都 23区, 港区 雇用形態 正社員 給与 650万円 \~ 900万円募集要項

Join EIRE's Information Security and Managed Services practice in Tokyo as an IT Security Consultant / Cyber Security Technical Specialist, helping clients strengthen their cyber security posture and operational resilience.

You'll blend consulting, technical assessments, security operations support, and infrastructure hardening — working directly with client stakeholders to identify risk, close gaps, and implement practical security controls across networks, cloud, and endpoints.

If you've built a solid foundation in infrastructure, networking, systems administration, and/or end-user computing and want to specialize in cyber security consulting, this is your next step.

What You'll Do

• Consulting \& Assessments — Run security health checks and vulnerability assessments, coordinate pen testing, and recommend remediation strategies.
• Security Operations — Support SOC monitoring, investigate alerts and incidents, and help refine incident response procedures.
• Infrastructure Hardening — Secure networks, Azure/M365 environments, Windows endpoints, and identity platforms (Entra ID).
• Managed Services — Collaborate with infrastructure and support engineers, provide security input on change management, and deliver clear, professionally written client reports.
• Client Engagement — Present findings to technical and non-technical stakeholders; travel to client sites across Tokyo as needed.

What You Bring

• Bachelor's degree in Cyber Security, Computer Science, IT, Network Engineering, or related field.
• Experience in IT infrastructure, sysadmin, networking, end-user computing, IT ops, or cyber security.
• Working knowledge of TCP/IP networking, Windows, Active Directory/Entra ID, Microsoft 365, Azure, Purview, Intune, and IAM/incident response fundamentals.
• Familiarity with ISO 27001 and risk management concepts.
• Bilingual Japanese-English strongly preferred — you'll work with local stakeholders and multinational clients alike.
• Professional client-facing communication skills, including strong written documentation and report-writing.
• Nice to Haves: Hands-on vulnerability management/pen testing, SOC experience, Microsoft security solutions, cloud security technologies, and/or certs like Security+, CISSP, CEH, SSCP, GIAC, or Azure Security Engineer Associate.

Why EIRE?

EIRE Systems is a well-established, independent IT services provider with an international culture and a diverse, long-standing client list across Japan and APAC. This is a genuinely varied role — assessment, consulting, operations, and engineering all in one seat — with real client exposure, modern cloud/security tech, and room to grow within an expanding security practice alongside experienced infrastructure and delivery professionals.

Sound like you?

If you're a technically sharp IT professional ready to move from fixing problems to shaping security strategy, we'd love to hear from you.

応募必要条件

職務経験 3年以上 キャリアレベル 中途経験者レベル 英語レベル ビジネス会話レベル 日本語レベル ビジネス会話レベル 最終学歴 大学卒： 学士号 現在のビザ 日本での就労許可が必要ですスキル・資格

• Bachelor's degree in Cyber Security, Computer Science, IT, Network Engineering, or related field.
• Experience in IT infrastructure, sysadmin, networking, end-user computing, IT ops, or cyber security.
• Working knowledge of TCP/IP networking, Windows, Active Directory/Entra ID, Microsoft 365, Azure, Purview, Intune, and IAM/incident response fundamentals.
• Familiarity with ISO 27001 and risk management concepts.
• Bilingual Japanese-English strongly preferred — you'll work with local stakeholders and multinational clients alike.
• Professional client-facing communication skills, including strong written documentation and report-writing.

Nice to Haves include:

• Hands-on vulnerability management/pen testing, SOC experience, Microsoft security solutions, cloud security technologies,
• Related certifications such as: Security+, CISSP, CEH, SSCP, GIAC, or Azure Security Engineer Associate.

※ Applicants MUST be resident of Japan and be available to work full-time onsite in Tokyo.

勤務地

• 東京都 23区, 港区
• 都営三田線駅

労働条件

雇用形態正社員給与650万円 \~ 900万円 業種: ITコンサルティング

職種

ICTスペシャリスト（IT・Web・通信系） > セキュリティエンジニア・アーキテクト

ICTスペシャリスト（IT・Web・通信系） > サーバ・運用保守

ICTスペシャリスト（IT・Web・通信系） > ネットワークエンジニア

ICTスペシャリスト（IT・Web・通信系） > テクニカルサポート

ICTスペシャリスト（IT・Web・通信系） > ITコンサルタント

会社概要

会社の種類 中小企業 (従業員300名以下) 外資系企業 外国人の割合 外国人 半数