Android & iOS SDK Engineer
Summary
Builds native Android/iOS SDKs for a mobile fraud-prevention product used by banking and fintech apps — implementing device/root-integrity checks, SIM binding, behavioral telemetry, and face/liveness onboarding capture flows. Core stack: Kotlin/Java or Swift, plus platform attestation and versioned SDK releases.
The role
Build and extend our native mobile SDKs for banking and fintech apps. Help turn device, SIM and
behavioural signals into useful evidence for account takeover prevention, session trust and secure
face/liveness onboarding.
Day-to-day work
- Implement device and app integrity checks for rooted/jailbroken phones, emulators and tampering; add
remote-access and screen-sharing indicators where the OS permits, with clear limitations. Validate
findings against legitimate devices to reduce noisy risk indicators.
- Build privacy-conscious telemetry for touch, typing cadence and navigation within the host app; capture
interaction patterns without collecting passwords or typed content. Define event schemas, batching and
retry behaviour with backend engineers.
- Extend supported SIM binding and SIM-change signals; integrate platform attestation and secure request
signing so backend teams can assess suspicious sessions.
- Build reliable face/liveness and document capture flows with the identity team, adding injection-aware
integration checks and handling permissions, camera errors and network failures. Keep capture and
verification callbacks straightforward for client developers.
- Test across devices and OS versions, measure size, latency and battery impact, debug client integrations,
and ship versioned SDK releases with sample apps and documentation.
What you bring
- Strong Android development in Kotlin/Java OR iOS development in Swift.
- Understand app lifecycle, permissions, background limits, threading and networking.
- Sound programming fundamentals, Git and interest in mobile security and reverse engineering.
- Freshers should demonstrate native mobile work through projects, internships or published apps.
- Proficiency with agentic AI coding tools, with the ability to review, test and take ownership of generated
code.
Good to have
Experience with both platforms, Play Integrity/App Attest, CameraX/AVFoundation, SDK publishing, or
React Native/Flutter bridges.