Tokyo Rakuten Full time
Description

Join the Cyber Security Defense Department (CSDD) in Rakuten Group, where we guarantee the security and safety of Internet services. CSDD covers all aspects of the System Development Life Cycle (SDLC) and operation security for all services developed inside Rakuten Group.

Position:

We're expanding our team due to increased demand and scope expansion.

Position Details

As a member of the CSDD Offensive Security Section, you'll work with development teams to ensure Rakuten's products meet expected security levels. You'll review new and existing products, delivering high-quality risk reports for stakeholders across Rakuten group companies.

Responsibilities:
  • Understand business requirements and define security requirements accordingly
  • Understand security policies, regulations, and best practices, proposing, designing, and implementing security solutions and controls
  • Understand the latest cyber threats and evaluate their impact on Rakuten Group and related systems
  • Review application source code and infrastructure configurations to discover vulnerabilities
  • Conduct automated and manual application penetration testing for web, mobile applications, APIs, and desktop applications to discover vulnerabilities
  • Present findings (vulnerabilities) in written reports and verbally to stakeholders, explaining the summary, impact, and remediation recommendations

Mandatory Qualifications:
  • 3+ years of experience in Cybersecurity related fields
  • 2+ years of experience in Web or Mobile application security assessment
  • Understanding of core concepts of web/mobile application security issues
  • Proficient in one or more scripting languages, e.g. Python, Ruby
  • Proven knowledge of communication and data exchange protocols used in networks and web applications
  • Strong leadership skills and teamwork capability in a diverse team environment
  • Strong verbal and written communications skill
  • Strong ownership and sense of responsibility

Desired Qualifications:
  • Experience in Web/Mobile application development using major frameworks
  • Experience using major commercial cloud environments such as AWS/Azure/GCP, and knowledge of cloud security and infrastructure such as Infrastructure as Code (IaC), containers (Docker), and orchestration (Kubernetes)
  • Ability to communicate in Japanese


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