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  • Job Industry:Information Technology
  • Position:Senior Penetration Tester - Offensive Security Section, Cyber Security Defense Department
  • Reference No:1022709
  • Location:Japan
  • Job Description:

    - Lead and Perform Penetration Testing activities on web applications, networks, mobile applications, and other systems.
    - Lead and Perform Red Team exercises to simulate the latest sophisticated attack scenarios.
    - Collaborate with the Blue Team and IT Administrators to improve Rakuten Group’s detection and defensive capabilities.
    - Produce high-quality reports and deliverables catered to technical and non-technical audiences.
    - Contribute to the Red Team’s knowledge and tooling base by investigating the latest Offensive Security tactics and techniques and developing tools and scripts.
    - Actively contribute to the administration, management, and continuous improvement of the Red Team’s infrastructure.
    - Provide mentorship and training to junior team members.

  • Requirement:

    Mandatory Qualifications:

    - Bachelor’s degree in Computer Science, Information Security, or a related field.
    - Minimum of 3-5 years of experience in penetration testing and red teaming.
    - Minimum of 3-5 years of experience in performing EDR evasion.
    - Minimum of 3-5 years of experience in using, administering, and automating Offensive Security Infrastructure,
    - Proficiency in scripting and programming languages (e.g., Python, PowerShell, Bash).
    - Familiarity with various operating systems (Windows, Linux, macOS) and network protocols.
    - Relevant certifications such as OSCP, OSCE, GPEN, GXPN, CRTO, GCFA, GCIH.

    Desired Qualifications:

    - Experience performing Offensive Security testing against cloud environments (AWS, GCP, Azure).
    - Experience or interest in performing Offensive Security testing against Generative AI systems and Large Language Models (LLMs).
    - Familiarity with regulatory requirements and standards (e.g., GDPR, HIPAA, PCI-DSS).
    - Fluent Japanese.

  • Remarks:
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