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Product Security Engineer, Cloud & DevSecOps - Cyber Security Defense Department (CSDD)

Tokyo, Japan💼 Full-time🗓 2026-04-16 → 2026-07-30

Core

Leading and executing security operations for Rakuten products, integrating security controls throughout the software development lifecycle (SDLC) to safeguard global internet services.

Role type

Product Security Engineer, Cloud & DevSecOps

Builds

Secure Rakuten Ecosystem products and cloud infrastructure

Domain

Cyber Security, Cloud Infrastructure, DevSecOps

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

application vulnerability assessment, network penetration testing, cloud security automation, programming (Java, PHP, Python, JavaScript), vulnerability management, incident response, DevSecOps integration, SDLC security

Preferred skills

enterprise security testing (SAST, DAST, SCA), cloud infrastructure security (CSPM, CWPP, CIEM), CI/CD tools (GitHub Actions, Jenkins, Terraform), cloud-native technologies (containers, Kubernetes, microservices)

Technologies

Java, PHP, Python, JavaScript, GitHub Actions, Jenkins, Terraform, Kubernetes, microservices

Responsibilities

Lead and execute product security operations including secure development consultation and vulnerability management; Optimize and operate security posture management across cloud infrastructure; Integrate security controls with product development teams; Collaborate with stakeholders to ensure security requirements are met; Provide expert security guidance and practical solutions; Apply threat intelligence to address emerging threats

Seniority

Mid-level, hands-on IC

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