Mobile App Security Engineer

Department: Engineering

Location: Global

Employment Type: FullTime

About BJAK

The original mission of BJAK is we believe people deserve smarter ways to plan, save and grow their money. This is the origin of our name.

Started in 2019, we built the first mobile-first, insurance platform, enabling insurance to be accessible online by millions in the region. Today, its the leading insurance platform in Southeast Asia.

Today, we are expanding ways to help people in the region — this includes spending, saving, investing, exchanging, travelling, and more. Our mission is help people get more from their money every day.

We have teams working around the world, with over 20 nationalities from our offices and remotely, who truly enjoys their work. We are looking for the most talented and driven people we can find. We are looking for people who work for their passion, not counting hours. Who loves building great next-generation products, not status quo. Who cares about redefining how everyone around us can get the best financial applications, not for an exclusive few.

If youre this person, wed love to talk to you.

The Role

Protect BJAKs native iOS and Android applications and their connections to backend services. Work with mobile, backend, and security teams to build mobile security into development and release processes.

What You Will Build

• 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.

What We Look For

• 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.

Language

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