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Sr. Security Engineer

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Sr. Security Engineer in Others

  • Tokyo, Japan

Responsibilities

  • Own Japan financial-services and payments compliance across JFSA supervisory expectations, APPI, and local banking and payments technology controls.
  • Build and maintain policy-as-code, automated control validation, continuous evidence collection, and compliance monitoring integrated into engineering workflows.
  • Operate and extend GRC platforms such as Vanta and integrate them with cloud, identity, logging, and engineering systems.
  • Partner with architects and engineering leads to embed JFSA and APPI requirements into system designs and technical implementations.
  • Design, implement, and validate controls for access, logging and monitoring, encryption, change management, vulnerability management, business continuity, disaster recovery, and secure SDLC.
  • Operate the cybersecurity and compliance risk register and lead risk assessments for products, payment flows, vendors, and architectural changes.
  • Coordinate with Legal and Data Privacy on APPI, personal-data security, and incident reporting.
  • Manage relationships with auditors, assessors, and applicable JFSA supervisory contacts.
  • Maintain policies, standards, procedures, and shared control libraries across Japan and US fintech operations.
  • Champion risk-based governance focused on meaningful security and business outcomes.

Requirements

  • Bachelor’s degree in computer science, information security, cybersecurity, risk management, or an engineering/STEM field, or equivalent practical experience.
  • 8+ years of experience owning or materially operating a GRC, information-security compliance, or ISMS program in fintech, banking, payments, SaaS, or another regulated technology environment, with primary Japan exposure.
  • Experience operating an ISMS and control library and supporting client security assurance, external audits, or regulatory evidence processes.
  • Hands-on experience with JFSA supervisory expectations and Japanese banking and payments technology controls.
  • Strong knowledge of information-security risk management, control assessment, risk treatment, and governance reporting.
  • Experience with security incident-response governance and supplier or third-party security assurance.
  • Working knowledge of APPI and ability to partner on personal-data security and incident support.
  • Technical fluency with AWS, GCP, or Azure, identity, logging, and secure SDLC controls.
  • Preferred: 10+ years of information-security compliance, GRC engineering, or technology audit experience in fintech or financial services with Japan focus.
  • Preferred: experience with IAM, logging and monitoring, encryption, hardening, CI/CD or DevSecOps compliance checks, threat modeling, SAST/DAST, dependency scanning, secrets management, penetration testing, vulnerability remediation, and BC/DR evidence.
  • Preferred: experience with enterprise trust centers, vendor questionnaires, client audits, contractual security schedules, shared control libraries, and RTO/RPO validation.
  • Certifications such as CISSP, CISM, CISA, or CRISC are preferred.
  • Based in Japan; English fluency required and Japanese proficiency preferred.

Benefits

  • The position may require occasional travel.
  • The company operates with a flat organizational structure and expects employees to contribute hands-on to the mission.

xAI

xAI builds advanced AI systems designed to deeply understand the universe and support humanity's quest for knowledge. Targeting innovators and thinkers, our platform emphasizes engineering excellence and hands-on collaboration, fostering an environment where curiosity drives results.

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