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Security Engineer, IrukaDark (Desktop AI Product) & High-Traffic Platform

Onsite or remote • Tokyo+1💼 Full-time🗓 2026-06-25

Core

Design, review, and improve security systems for a desktop AI product and high-traffic platform, protecting user data, AI workflows, APIs, and infrastructure.

Role type

Hands-on security engineer (product, application, cloud, and AI security)

Builds

Security architecture for desktop apps, backend APIs, cloud infrastructure, and AI workflows

Domain

AI product security, high-traffic platform operations, cloud security

Deliverable

production ML models | product features | infrastructure

Required skills

security engineering, application security, cloud security, AI security, privacy, high-traffic operations, web application security, secure coding, OWASP Top 10, cloud security platforms, IAM, encryption, authentication, network security, firewalls, secure communication protocols, security tools (SAST, DAST, vulnerability scanners, SIEM), vulnerability management, threat modeling, security testing, supply chain risk management, incident response, SOC2 compliance

Preferred skills

user experience perspective, enterprise security documentation, collaboration with engineering teams

Technologies

AWS, Azure, GCP, SAST, DAST, SIEM

Responsibilities

Review security architecture of desktop app, backend APIs, and cloud infrastructure; Design security systems supporting hundreds of millions of monthly requests; Identify risks related to local data, clipboard access, screen context, AI prompts, logs, API calls, and external integrations; Improve authentication, authorization, session handling, API security, and abuse prevention; Support secure integration with AI APIs and external services; Design safe data handling policies for sensitive user information; Improve secrets management, key handling, and secure configuration; Build and improve vulnerability management processes; Support monitoring, alerting, incident response, and post-incident reviews; Review dependencies, supply chain risks, and deployment pipelines; Conduct application security reviews, threat modeling, and security testing; Prepare security documentation for enterprise customers; Support SOC2 readiness and other security compliance initiatives; Work with engineers to fix security issues without slowing down product development

Seniority

Mid-to-Senior, hands-on IC

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