Jobs in Japan
Explore hand-picked jobs in Japan for English speakers across tech, education, marketing, and more.
Vetted companies only. Apply from overseas.
Explore hand-picked jobs in Japan for English speakers across tech, education, marketing, and more.
Vetted companies only. Apply from overseas.
PaidyCybersecurity is everyone’s responsibility, but our security team leads the charge on solving some of the most challenging and consequential problems facing our organization and industry. As a fintech company operating within a larger corporate group, we navigate a dynamic regulatory landscape while integrating our security program with our parent company’s broader initiatives. The AppSec & Mobile Cybersecurity Lead is responsible for designing, implementing, and scaling security across Paidy’s iOS and Android applications, mobile APIs, and backend services. This role hardens the systems that power our consumer and merchant experiences by embedding security into the software development lifecycle, building automation that scales with engineering velocity, and staying ahead of an evolving threat landscape that now includes AI-driven attacks and AI-generated fraud. The successful candidate will collaborate closely with mobile engineering, platform, and compliance teams, as well as external auditors and our parent company’s security teams.
5+ years of experience in application security, mobile security, or DevSecOps with demonstrated technical depth, strong hands-on Android and iOS development and security hardening expertise, experience with end-to-end vulnerability management including SAST, SCA, and DAST tooling, proven experience building security controls into CI/CD pipelines on AWS, experience with container scanning (image and runtime) and infrastructure as code security checks, solid understanding of the OAuth2 protocol and experience designing and securing REST and GraphQL APIs at scale, broad software development experience in one or more of: Rust, Scala, Python, Java, or equivalent modern languages, extensive experience with AWS cloud security across common services (API Gateway, Lambda, ECS, RDS, and related), confidence with Docker and Terraform as development and infrastructure tools, hands-on experience using AI coding tools (e.g., Claude Code) to build or automate security workflows, effective communicator with a pragmatic approach to security — able to build strong relationships with engineering and business stakeholders, business-level English required; Japanese language ability is helpful but not required, B.S. in Computer Science, Information Security, or a related field, or equivalent practical experience.
Japanese language proficiency (JLPT 2 or above), experience securing mobile payments or fintech applications in regulated environments, demonstrated history of building custom internal security tools, not only consuming commercial products, familiarity with the Japanese regulatory environment including APPI and the Installment Sales Act, prior experience defending mobile platforms at scale against fraud, abuse, and automated attacks.
Diversified team with 230+ colleagues from 35+ countries, exciting work opportunities in a rapid-growing organization, cross-functional collaboration, hybrid remote work model - minimum 2 times in office per week (subject to change at company discretion), competitive salary and benefits.