• Full-time

Publication date： 2026.11.05

[DIVA] Security Engineer

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary： JPY 8,000,000 - 13,000,000
【ディーバ】セキュリティエンジニア
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile [Company] DIVA

[Development team for the domestic consolidated accounting system with the top market share / Company with 20% growth for 10 consecutive years / Average pay raise rate of over 7% / Average overtime in the 10-hour range per month / Flextime work]

●An experienced HR team works alongside you throughout the selection process. Depending on the case, casual interviews with no screening element are also possible. We will think about the best career together with you.
●A stable management foundation built on strong connections with major corporate groups × involvement in the universal business domain of accounting
仕事内容Job description Rather than limiting the work to creating rules and documentation, you will lead the building of technical foundations and implementation decisions through hands-on work. This is not a role where you stop at design; you take end-to-end ownership at the code level.
1. Design and Implementation of Cloud Security Architecture
You will write AWS security guardrails in Terraform and take them through deployment and operation yourself. You will own the process from requirements definition through implementation and build a highly effective foundation.
2. Implementing DevSecOps
You will personally integrate Trivy/Snyk into pipelines such as GitHub Actions and implement automated vulnerability detection. You will bring it to a state where the development team can operate it in production, submit PRs as needed, and lead technical resolution.
3. Fostering and Implementing a Secure Coding Culture
Going beyond creating guidelines, you will personally get involved in the review process. You will go beyond flagging issues to turning them into lint rules, implementing mechanisms at the code level to prevent recurrence.
4. Risk Assessment and Technical Response
You will assess risks in systems that handle confidential information and execute technical countermeasures (engineering) to back up policies, not just formulate policies.
応募資格Requirement ・Experience designing and building security for cloud environments (such as AWS) (guideline: 3 years or more)
・Experience building and operating a development process that incorporates security perspectives (DevSecOps)
・Experience with automation and tool development using programming (Python, Go, Bash, etc.)

[Preferred requirements]
・Experience as a leader of a security team, or deep collaboration experience with product development teams
・Holding CISSP, CISM, CISA, or cloud security-related certifications
・Experience building and operating an incident response (CSIRT) structure
・Experience implementing a Zero Trust architecture
日本語力Japanese level Fluent
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours Flextime (9:00-18:00)
想定年収Salary JPY 8,000,000 - 13,000,000
条件・待遇Condition [Salary]
Expected annual salary: 8,000,000 yen to 13,000,000 yen
・Monthly salary 571,429 yen (base salary 462,009 + fixed overtime allowance 109,330) ~
・Fixed overtime hours: 30 hours
・At hiring, the theoretical annual salary amount (expected) is set and paid in 14 installments (12 monthly salaries + 2 bonuses)
・The total monthly salary is calculated with the expected annual salary divided into 14 installments as base salary plus fixed overtime allowance (for managerial/supervisory class, the amount divided into 14 installments is the base salary)
・Bonus amount: 2 to 3 times per year
・Salary increases and promotions: once a year / July (*For employees below managerial/supervisory class with less than 3 years of service, twice a year / July and January)
Employment type: Regular employee
[Work location]
1-8-23 Konan, Minato-ku, Tokyo, Shinagawa HEART 9th floor
※ Depending on the position, you may be assigned to work at the Shinjuku headquarters.
※ Scope of change in work location: Any work location designated by the company
[Working hours]
Standard 9:00 to 18:00
※ Under the flextime system (160 hours/month), you can design your own working hours.
Flexible arrangements such as 6-hour workdays are possible to accommodate medical appointments, family circumstances, or preferred concentration hours.
選考についてProcess
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