[Threat Modeling/Code Review Experience] From "Defense" to "Systematization". Senior Security Engineer | Product x AI Agent SecurityEnglish summary from Japanese

株式会社TOKIUM

✓ Detailed

Salary

8 million yen ~ 12 million yen

Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

TOKIUM is seeking a Senior Security Engineer to design and implement security assurance systems for AI-generated code and development environments. The role focuses on product and development security to support business growth, aiming to improve productivity by automating routine tasks.

Must-haves

3+ years of security engineering experience for web applications or cloud services
Experience leading threat modeling, secure coding reviews, or vulnerability management
Ability to design security as a mechanism to improve development productivity
Openness to AI and automation
Ability to communicate across development, SRE, and management teams

Nice-to-haves

Experience as a security lead or team lead for SaaS/BtoB products
Experience with SBOM and supply chain security
Experience with countermeasures against AI agent/LLM threats
Practical experience in identity and access management
Practical experience in information security for BtoB domains (accounting, finance)
Security certifications (CISSP, CSSLP, OSCP)

About the Company

株式会社TOKIUM

Headquarters

東京都中央区銀座6丁目18-2 野村不動産銀座ビル12階

Visit Website

Posted6/9/2026

Sourcefindy

[Threat Modeling/Code Review Experience] From "Defense" to "Systematization". Senior Security Engineer | Product x AI Agent SecurityEnglish summary from Japanese

Role summaryEnglish summary from Japanese

Must-haves

Nice-to-haves

About the Company

Tech stack

Work style

Other notes