Job Description :Key Responsibilities :1. SDK Architecture and Engineering :- Design, architect, and evolve scalable, secure, and high-performance native Android and iOS SDKs.- Establish SDK architecture, modularization, public API design, versioning strategies, and backward-compatibility standards.- Lead the development of reusable SDK components using Kotlin/Java, Android NDK/C++ where required, Swift, and Objective-C.- Optimize SDK binary size, cold-start latency, memory footprint, initialization overhead, and runtime performance.- Design integration patterns that minimize implementation effort and compatibility issues for banking and fintech partners.- Define SDK integration contracts, configuration models, error handling, and developer-facing APIs.- Develop sample applications, integration documentation, migration guides, and diagnostic tooling.- Review code and architecture proposals, enforce engineering standards, and mentor junior and mid-level engineers.2. Advanced Device Security and Anti-Fraud:- Design and implement robust root/jailbreak detection and identify emulators, debuggers, hooking frameworks, and runtime instrumentation.- Develop and harden detection mechanisms against tools and techniques such as Frida, Xposed, Cydia Substrate, and related injection frameworks.- Architect RASP capabilities covering runtime integrity verification, anti-tampering, anti-repackaging, obfuscation, and suspicious execution detection.- Design privacy-conscious device fingerprinting mechanisms that generate reliable signals for fraud detection and risk assessment.- Evaluate bypass techniques, perform security-focused testing, and proactively strengthen detection and mitigation mechanisms.- Balance detection effectiveness with false-positive rates, device compatibility, performance, and legitimate user experience.- Collaborate with security research, fraud analytics, and machine learning teams to integrate device risk signals into fraud detection systems.- Define approaches for securely collecting, validating, and transmitting device security telemetry.3. Android and iOS Platform Security :- Lead security-focused implementation across Android and iOS,



with deep expertise in at least one platform and working knowledge of the other.- Integrate and evaluate Android Keystore, Play Integrity API, iOS Keychain, Secure Enclave, and App Attest.- Design secure SDK-to-server communication flows involving token exchange, certificate pinning, replay protection, and appropriate cryptographic controls.- Implement secure local storage, sensitive-data handling, integrity verification, and platform-specific security controls.- Evaluate low-level platform capabilities and Android NDK/C++ or native iOS techniques where they improve security.- Stay current with OS security changes, platform restrictions, recent attack vectors, and evolving mobile security best practices.- Assess security trade-offs and recommend practical mitigations for production environments.4. Quality Engineering and Production Ownership :- Define SDK quality standards covering crash-free rate, ANR rate, startup performance, memory usage, compatibility, and release stability.- Establish comprehensive testing strategies across real devices, OS versions, manufacturers, and application configurations.- Design automated unit, integration, compatibility, and regression testing for SDK components.- Build and improve CI/CD pipelines for SDK compilation, security checks, automated testing, artifact publishing, and staged rollouts.- Lead root-cause analysis of complex production issues, security incidents, and partner integration failures.- Own release readiness, version rollout strategies, regression prevention, and production stability improvements.- Establish monitoring, diagnostics, and support processes for L2/L3 partner integration issues.5. Partner Engineering and Cross-Functional Collaboration :- Work directly with banking, fintech,



and enterprise partners to resolve complex SDK integration and compatibility challenges.- Lead technical discussions, partner onboarding, integration validation, and certification activities.- Collaborate with backend engineering teams on secure APIs, authentication flows, telemetry ingestion, and device risk assessment.- Partner with fraud and ML teams to improve the quality and usefulness of device-derived risk signals.- Coordinate with security teams on threat modeling, vulnerability assessment, remediation, and security validation.- Translate partner requirements and production findings into SDK roadmap improvements.Required Skills and Qualifications :- 6 - 8 years of hands-on native mobile engineering experience.- Strong expertise in at least one platform :1. Android : Kotlin, Java, Android SDK, Gradle, and preferably NDK/C++.2. iOS : Swift, Objective-C, Xcode, and platform-native security frameworks.- Proven experience building, releasing, and maintaining production SDKs or libraries consumed by external developers or partner applications.- Strong understanding of SDK architecture, public API design, semantic versioning, dependency management, and backward compatibility.- Hands-on experience with mobile security controls, including root/jailbreak detection, anti-tampering, and code obfuscation.- Practical knowledge of RASP, runtime integrity checks, hooking/injection detection, and anti-repackaging techniques.- Experience with device fingerprinting or mobile device risk signals.- Strong understanding of Android Keystore and Play Integrity API, and/or iOS Keychain, Secure Enclave, and App Attest.- Experience implementing secure communication controls, including certificate pinning, secure token handling, and replay protection.- Demonstrated ability to debug complex issues across physical devices, manufacturers, and OS versions.- Experience with CI/CD, automated testing, production diagnostics, and SDK release management.- Strong technical leadership, code review, problem-solving, and cross-functional communication skills. (ref:hirist.tech)

📌 Senior Native Android/iOS Developer (Bengaluru)
🏢 Techmatters Technologies and Consulting Private Li
📍 Bengaluru