Mobile App Security Engineer

BJAK started in 2019 as a mobile-first insurance platform enabling online insurance access for millions in Southeast Asia. The company is expanding its financial services offerings including spending, saving, investing, exchanging, and travelling, with teams globally.

• Degree in Computer Science, Cybersecurity, or related field, or equivalent experience.
• 3+ years in mobile development, mobile security, or mobile penetration testing.
• Experience implementing and owning SC TRM and BNM RMiT controls relevant to mobile applications and secure technology delivery.
• Hands-on native iOS development or review using Swift and Android using Kotlin.
• Practical knowledge of OWASP MASVS and MASTG, mobile threat modeling, and mobile testing tools.
• Experience with secure storage, certificate pinning, jailbreak/root detection, tamper resistance, authentication, and mobile API security.
• Able to work with mobile developers and communicate findings, trade-offs, and remediation steps.

• Assess and review native iOS and Android applications built with Swift and Kotlin.
• Apply OWASP MASVS and MASTG to define mobile security requirements, test coverage, and remediation priorities.
• Assess secure local storage, Keychain and Keystore use, sensitive data handling, sessions, tokens, and data leakage.
• Implement and test transport security, including certificate validation and certificate pinning where appropriate.
• Evaluate tamper detection, jailbreak and root detection, anti-debugging, and runtime protection controls proportionate to risk.
• Work with API and backend teams on authentication, authorization, API exposure, and secure mobile communication.
• Own mobile security controls for SC TRM and BNM RMiT, including testing evidence, vulnerability remediation, release controls, and audit support.

English is the main working language across global teams. Strong English communication is required.