Hybrid Product Security Engineer

Posted last month

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About the role

  • Review product designs to define necessary security requirements based on threat modeling.
  • Review proposed architectures and propose a set of security controls in order to minimize risk.
  • Review source code to find security problems and potential vulnerabilities.
  • Conduct vulnerability assessments and penetration testing on Mercari’s Backend, Web, iOS, and Android applications.
  • Automate security checks and tests so that they can be easily and transparently plugged into the CI/CD pipeline.
  • Develop technical solutions to help mitigate security vulnerabilities.
  • Maintain technical and security standards for Web and mobile application technologies.
  • Educate developers on secure coding practices with workshops, talks, and lessons.
  • Evaluate and investigate suspected security events or incidents and perform remediation in accordance with Incident Response procedures.
  • Collaborate with information security officers, the legal team, and internal auditors on technical security matters.

Requirements

  • Bachelor's degree or equivalent practical experience.
  • Programming experience with one or more programming languages including but not limited to: Go, PHP, Java, Ruby, Python, Swift, Kotlin, or JavaScript.
  • 4+ years of experience analyzing the security of systems (penetration testing, Web application security testing, vulnerability scanning, threat modeling, etc.).
  • Good understanding of modern Web application architecture, TLS, HTTP, TCP/IP, and standard network and system security technologies.
  • Experience with modern software development tools, such as distributed version control systems (git), dependency management, build systems, and CI/CD pipelines.
  • Strong teamwork skills in a diverse environment.
  • Effective interpersonal and communication skills.
  • In-depth technical knowledge of security engineering, computer and network security, Unix-based operating systems, mobile security, authentication, security protocols, and applied cryptography.
  • Strong experience in securing both backend (Go, PHP) and frontend (Web, JavaScript, iOS, Android) applications with the ability to adopt new frameworks and technologies quickly.
  • Good understanding of development methodologies such as Object-oriented Programming (OOP), Domain-driven Design (DDD), and Test-driven Development (TDD).
  • Good understanding of microservice architecture and related security patterns.
  • Good understanding of the inner workings of OAuth2 and OIDC implementations.
  • Knowledge of container and orchestration technology like Docker and Kubernetes.
  • Experience working with large-scale cloud infrastructure and services (GCP or AWS).
  • Experience with securing large-scale cloud infrastructure through analyzing CSPM alerts from tools such as Wiz.
  • Experience working in an agile and DevOps-centric environment.
  • Japanese: Ideal but not required
  • English: Independent (CEFR-B2)

Job title

Product Security Engineer

Job type

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

Bachelor's Degree

Location requirements

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