SDK Engineer

The core responsibilities for the job include the following:

SDK Engineering:

• Build and maintain native Android (Kotlin/Java) and iOS (Swift/Objective-C) SDKs used by banks, fintech, and startup apps.
• Own SDK architecture, versioning, and backward compatibility across partner and OS versions.
• Optimize SDK size, cold-start latency, and memory footprint.
• Write integration docs, sample apps, and support tooling for partner teams.

Device Security and Anti-Fraud:

• Build and harden root/jailbreak, emulator, debugger, and hooking-framework detection (Frida, Xposed, Cydia Substrate).
• Build device fingerprinting for fraud and risk signals.
• Implement RASP obfuscation, tamper detection, integrity checks, and anti-repackaging.
• Track emerging bypass techniques and patch proactively.
• Feed device signals into the fraud detection engine with security and ML.

Platform and Ecosystem:

• Work fluently across Android (Kotlin, NDK where relevant) and iOS (Swift, Objective-C).
• Integrate biometrics, Android Keystore, iOS Keychain/Secure Enclave, Play Integrity API, and App Attest.
• Define secure SDK-to-server protocols: token exchange, certificate pinning, and replay protection.
• Support partner integration, testing, and certification directly.

Quality, Release, and Support:

• Test across a wide matrix of real devices, OS versions, and manufacturers.
• Own crash-free rate, ANR rate, and SDK stability in production.
• Build and maintain CI/CD for SDK builds, testing, and staged rollouts.
• Provide L2/L3 support for partner integration issues.